ykrftjdgdhmdhdgh ety d jd j

.dockerignore

+# === Node ===
+frontend/node_modules
+frontend/dist
+frontend/.vite
+
+# === Python ===
+**/__pycache__
+**/*.pyc
+**/*.pyo
+*.egg-info
+
+# === Git ===
+.git
+.gitignore
+
+# === Dev files ===
+.env
+.env.local
+*.md
+create-project.ps1
+main.py
+**/.DS_Store
+
+# === IDE ===
+.idea
+.vscode
+*.swp
+*.swo

Dockerfile

@@ -4,10 +4,23 @@
 FROM node:20-alpine AS frontend-build
 
 WORKDIR /build/frontend
+
+# Nuke NODE_ENV — CapRover/Docker can inject production
+# which prevents devDependencies (vite, tailwind) from installing
+ENV NODE_ENV=
+
 COPY frontend/package.json frontend/package-lock.json* ./
-RUN npm install --legacy-peer-deps
+
+# Force ALL deps including dev
+RUN npm install --legacy-peer-deps --include=dev && \
+  echo "=== vite check ===" && \
+  npx vite --version
+
 COPY frontend/ ./
-RUN npm run build
+
+RUN NODE_ENV=production npx vite build && \
+  echo "=== dist ===" && \
+  ls -la dist/
 
 # ============================================
 # Stage 2: Python Backend + Serve Frontend
@@ -15,9 +28,9 @@ RUN npm run build
 FROM python:3.11-slim
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    build-essential \
-    ffmpeg \
-    && rm -rf /var/lib/apt/lists/*
+  build-essential \
+  ffmpeg \
+  && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 
@@ -28,11 +41,12 @@ COPY backend/ ./backend/
 
 COPY --from=frontend-build /build/frontend/dist ./frontend/dist
 
-# Warm up the ChromaDB embedding model so first request is fast
+RUN echo "=== Frontend ===" && ls -la frontend/dist/ && \
+  echo "=== Assets ===" && ls -la frontend/dist/assets/ || true
+
 COPY warmup.py /tmp/warmup.py
 RUN python /tmp/warmup.py && rm /tmp/warmup.py
 
-# Create persistent data directories
 RUN mkdir -p /data/chromadb /data/uploads /data/uploads/chat_attachments
 
 ENV PYTHONUNBUFFERED=1

atchfiles.sh

+#!/usr/bin/env bash
+set -euo pipefail
+
+# ═══════════════════════════════════════════════════════════════
+# 🔥 Son of Anton — Patch All Modified/New Files
+#    Run from the son-of-anton root directory
+# ═══════════════════════════════════════════════════════════════
+
+PROJECT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$PROJECT_DIR"
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+NC='\033[0m'
+
+ok()   { echo -e "  ${GREEN}✔${NC} $1"; }
+step() { echo -e "  ${CYAN}▸${NC} Writing $1..."; }
+
+echo ""
+echo -e "${CYAN}═══════════════════════════════════════════════════${NC}"
+echo -e "${BOLD}  Patching all files...${NC}"
+echo -e "${CYAN}═══════════════════════════════════════════════════${NC}"
+echo ""
+
+# ────────────────────────────────────────
+# .dockerignore
+# ────────────────────────────────────────
+step ".dockerignore"
+cat > .dockerignore << 'ENDOFFILE'
+# === Node ===
+frontend/node_modules
+frontend/dist
+frontend/.vite
+
+# === Python ===
+**/__pycache__
+**/*.pyc
+**/*.pyo
+*.egg-info
+
+# === Git ===
+.git
+.gitignore
+
+# === Dev files ===
+.env
+.env.local
+*.md
+create-project.ps1
+main.py
+**/.DS_Store
+
+# === IDE ===
+.idea
+.vscode
+*.swp
+*.swo
+ENDOFFILE
+ok ".dockerignore"
+
+# ────────────────────────────────────────
+# backend/config.py
+# ────────────────────────────────────────
+step "backend/config.py"
+cat > backend/config.py << 'ENDOFFILE'
+"""
+Application configuration — reads from environment variables.
+"""
+
+import os
+import secrets
+
+BEDROCK_API_KEY: str = os.getenv(
+    "BEDROCK_API_KEY",
+    os.getenv("AWS_BEARER_TOKEN_BEDROCK", ""),
+)
+AWS_REGION: str = os.getenv("AWS_REGION", "eu-central-1")
+PRIMARY_MODEL: str = os.getenv("PRIMARY_MODEL", "eu.anthropic.claude-opus-4-6-v1")
+FAST_MODEL: str = os.getenv("FAST_MODEL", "eu.anthropic.claude-haiku-4-5-20251001-v1:0")
+
+JWT_SECRET: str = os.getenv("JWT_SECRET", secrets.token_hex(32))
+JWT_ALGORITHM: str = "HS256"
+JWT_EXPIRY_HOURS: int = 72
+
+SUPERADMIN_PASSWORD: str = os.getenv("SUPERADMIN_PASSWORD", "admin123")
+
+DATABASE_URL: str = os.getenv("DATABASE_URL", "sqlite:////data/sonofanton.db")
+
+CHROMADB_PATH: str = os.getenv("CHROMADB_PATH", "/data/chromadb")
+UPLOAD_PATH: str = os.getenv("UPLOAD_PATH", "/data/uploads")
+ATTACHMENT_PATH: str = os.getenv("ATTACHMENT_PATH", "/data/uploads/chat_attachments")
+
+DEFAULT_QUOTA: int = int(os.getenv("DEFAULT_QUOTA", "2000000"))
+MAX_UPLOAD_BYTES: int = int(os.getenv("MAX_UPLOAD_MB", "50")) * 1024 * 1024
+MAX_ATTACHMENT_BYTES: int = int(os.getenv("MAX_ATTACHMENT_MB", "25")) * 1024 * 1024
+
+MAX_IMAGE_DIMENSION: int = 1568
+MAX_VIDEO_FRAMES: int = 6
+
+BEDROCK_ENDPOINT: str = (
+    f"https://bedrock-runtime.{AWS_REGION}.amazonaws.com"
+)
+ENDOFFILE
+ok "backend/config.py"
+
+# ────────────────────────────────────────
+# backend/models.py
+# ────────────────────────────────────────
+step "backend/models.py"
+cat > backend/models.py << 'ENDOFFILE'
+"""
+SQLAlchemy ORM models.
+"""
+
+from datetime import datetime, timedelta
+from uuid import uuid4
+
+from sqlalchemy import (
+    Column, String, Text, Boolean, BigInteger, Integer, DateTime, ForeignKey,
+)
+from sqlalchemy.orm import relationship
+
+from backend.database import Base
+
+
+def new_id() -> str:
+    return str(uuid4())
+
+
+def next_month() -> datetime:
+    now = datetime.utcnow()
+    if now.month == 12:
+        return datetime(now.year + 1, 1, 1)
+    return datetime(now.year, now.month + 1, 1)
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    username = Column(String(50), unique=True, nullable=False, index=True)
+    email = Column(String(120), unique=True, nullable=False)
+    password_hash = Column(String(200), nullable=False)
+    role = Column(String(20), default="user")
+    is_active = Column(Boolean, default=True)
+    quota_tokens_monthly = Column(BigInteger, default=2_000_000)
+    tokens_used_this_month = Column(BigInteger, default=0)
+    quota_reset_date = Column(DateTime, default=next_month)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    chats = relationship("Chat", back_populates="user", cascade="all,delete-orphan")
+
+
+class Chat(Base):
+    __tablename__ = "chats"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    user_id = Column(String(36), ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
+    title = Column(String(200), default="New Chat")
+    model = Column(String(100), default="eu.anthropic.claude-opus-4-6-v1")
+    knowledge_base_id = Column(String(36), nullable=True)
+    max_tokens = Column(Integer, default=4096)
+    reasoning_budget = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    user = relationship("User", back_populates="chats")
+    messages = relationship(
+        "Message", back_populates="chat",
+        cascade="all,delete-orphan", order_by="Message.created_at",
+    )
+    attachments = relationship(
+        "ChatAttachment", back_populates="chat",
+        cascade="all,delete-orphan",
+    )
+
+
+class Message(Base):
+    __tablename__ = "messages"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    chat_id = Column(String(36), ForeignKey("chats.id", ondelete="CASCADE"), nullable=False)
+    role = Column(String(20), nullable=False)
+    content = Column(Text, default="")
+    thinking_content = Column(Text, nullable=True)
+    input_tokens = Column(Integer, default=0)
+    output_tokens = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    chat = relationship("Chat", back_populates="messages")
+    attachments = relationship("ChatAttachment", back_populates="message")
+
+
+class ChatAttachment(Base):
+    __tablename__ = "chat_attachments"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    chat_id = Column(String(36), ForeignKey("chats.id", ondelete="CASCADE"), nullable=False)
+    message_id = Column(String(36), ForeignKey("messages.id", ondelete="SET NULL"), nullable=True)
+    filename = Column(String(200), nullable=False)
+    original_filename = Column(String(200), nullable=False)
+    mime_type = Column(String(100), nullable=False)
+    file_type = Column(String(20), nullable=False)
+    file_size = Column(Integer, default=0)
+    storage_path = Column(String(500), nullable=False)
+    text_extract = Column(Text, nullable=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    chat = relationship("Chat", back_populates="attachments")
+    message = relationship("Message", back_populates="attachments")
+
+
+class KnowledgeBase(Base):
+    __tablename__ = "knowledge_bases"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    user_id = Column(String(36), ForeignKey("users.id", ondelete="CASCADE"), nullable=True)
+    name = Column(String(200), nullable=False)
+    description = Column(Text, default="")
+    document_count = Column(Integer, default=0)
+    chunk_count = Column(Integer, default=0)
+    total_characters = Column(BigInteger, default=0)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+
+class KnowledgeDocument(Base):
+    __tablename__ = "knowledge_documents"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    knowledge_base_id = Column(
+        String(36), ForeignKey("knowledge_bases.id", ondelete="CASCADE"), nullable=False,
+    )
+    filename = Column(String(200), nullable=False)
+    file_size = Column(Integer, default=0)
+    chunk_count = Column(Integer, default=0)
+    created_at = Column(DateTime, default=datetime.utcnow)
+ENDOFFILE
+ok "backend/models.py"
+
+# ────────────────────────────────────────
+# backend/main.py
+# ────────────────────────────────────────
+step "backend/main.py"
+cat > backend/main.py << 'ENDOFFILE'
+"""
+Son of Anton — Main FastAPI Application
+"""
+
+import os
+from pathlib import Path
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI, HTTPException
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
+from fastapi.middleware.cors import CORSMiddleware
+
+from backend.database import engine, Base
+from backend.seed import seed_superadmin
+from backend.routes.auth_routes import router as auth_router
+from backend.routes.chat_routes import router as chat_router
+from backend.routes.admin_routes import router as admin_router
+from backend.routes.knowledge_routes import router as knowledge_router
+from backend.routes.files_routes import router as files_router
+from backend.routes.attachment_routes import router as attachment_router
+from backend.services.bedrock_service import close_http_client
+
+
+def _run_migrations():
+    """Add new columns/tables to existing DB if they're missing."""
+    from sqlalchemy import inspect, text
+    try:
+        inspector = inspect(engine)
+        existing_tables = inspector.get_table_names()
+
+        if "chats" in existing_tables:
+            columns = {c["name"] for c in inspector.get_columns("chats")}
+            with engine.connect() as conn:
+                if "max_tokens" not in columns:
+                    conn.execute(text("ALTER TABLE chats ADD COLUMN max_tokens INTEGER DEFAULT 4096"))
+                    print("  Added chats.max_tokens column")
+                if "reasoning_budget" not in columns:
+                    conn.execute(text("ALTER TABLE chats ADD COLUMN reasoning_budget INTEGER DEFAULT 0"))
+                    print("  Added chats.reasoning_budget column")
+                conn.commit()
+
+        if "chat_attachments" not in existing_tables:
+            from backend.models import ChatAttachment
+            ChatAttachment.__table__.create(bind=engine, checkfirst=True)
+            print("  Created chat_attachments table")
+
+    except Exception as e:
+        print(f"  Migration note: {e}")
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    Base.metadata.create_all(bind=engine)
+    _run_migrations()
+    seed_superadmin()
+    print("Son of Anton is online.")
+    yield
+    await close_http_client()
+    print("Son of Anton shutting down.")
+
+
+app = FastAPI(
+    title="Son of Anton",
+    description="Avatar of All Elements of Code",
+    version="2.0.0",
+    lifespan=lifespan,
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+app.include_router(auth_router, prefix="/api/auth", tags=["Auth"])
+app.include_router(chat_router, prefix="/api/chats", tags=["Chats"])
+app.include_router(admin_router, prefix="/api/admin", tags=["Admin"])
+app.include_router(knowledge_router, prefix="/api/knowledge", tags=["Knowledge"])
+app.include_router(files_router, prefix="/api/files", tags=["Files"])
+app.include_router(attachment_router, prefix="/api", tags=["Attachments"])
+
+FRONTEND_DIR = Path(__file__).parent.parent / "frontend" / "dist"
+
+if (FRONTEND_DIR / "assets").exists():
+    app.mount(
+        "/assets",
+        StaticFiles(directory=str(FRONTEND_DIR / "assets")),
+        name="static-assets",
+    )
+
+
+@app.get("/{full_path:path}", include_in_schema=False)
+async def serve_frontend(full_path: str):
+    if full_path.startswith("api"):
+        raise HTTPException(status_code=404, detail="Not found")
+    file_path = FRONTEND_DIR / full_path
+    if full_path and file_path.is_file():
+        return FileResponse(str(file_path))
+    index = FRONTEND_DIR / "index.html"
+    if index.is_file():
+        return FileResponse(str(index))
+    return {"message": "Son of Anton API is running. Frontend not built."}
+ENDOFFILE
+ok "backend/main.py"
+
+# ────────────────────────────────────────
+# backend/services/attachment_service.py
+# ────────────────────────────────────────
+step "backend/services/attachment_service.py"
+cat > backend/services/attachment_service.py << 'ENDOFFILE'
+"""
+Attachment processing service.
+Handles images, videos (frame extraction), PDFs, and text files.
+"""
+
+import os
+import io
+import base64
+import shutil
+import subprocess
+import tempfile
+import mimetypes
+from pathlib import Path
+from uuid import uuid4
+from typing import Optional
+
+from backend import config
+
+os.makedirs(config.ATTACHMENT_PATH, exist_ok=True)
+
+IMAGE_EXTENSIONS = {".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp", ".tiff"}
+VIDEO_EXTENSIONS = {".mp4", ".mov", ".avi", ".mkv", ".webm", ".flv", ".wmv", ".m4v"}
+PDF_EXTENSIONS = {".pdf"}
+TEXT_EXTENSIONS = {
+    ".txt", ".md", ".py", ".js", ".ts", ".jsx", ".tsx", ".cs", ".java",
+    ".cpp", ".c", ".h", ".hpp", ".go", ".rs", ".rb", ".php", ".swift",
+    ".kt", ".lua", ".gd", ".html", ".css", ".scss", ".json", ".yaml",
+    ".yml", ".xml", ".toml", ".ini", ".cfg", ".conf", ".sh", ".bash",
+    ".sql", ".r", ".dart", ".vue", ".svelte", ".csv", ".log", ".env",
+}
+
+IMAGE_MIMES = {"image/jpeg", "image/png", "image/gif", "image/webp"}
+VIDEO_MIMES = {"video/mp4", "video/quicktime", "video/x-msvideo", "video/webm"}
+
+
+def classify_file(filename, mime):
+    ext = Path(filename).suffix.lower()
+    if ext in IMAGE_EXTENSIONS or mime in IMAGE_MIMES:
+        return "image"
+    if ext in VIDEO_EXTENSIONS or mime in VIDEO_MIMES:
+        return "video"
+    if ext in PDF_EXTENSIONS or mime == "application/pdf":
+        return "document"
+    return "text"
+
+
+def get_mime_type(filename, content_type=None):
+    if content_type and content_type != "application/octet-stream":
+        return content_type
+    mime, _ = mimetypes.guess_type(filename)
+    return mime or "application/octet-stream"
+
+
+def save_attachment(chat_id, filename, content, content_type=None):
+    mime = get_mime_type(filename, content_type)
+    file_type = classify_file(filename, mime)
+    attachment_id = str(uuid4())
+
+    chat_dir = os.path.join(config.ATTACHMENT_PATH, chat_id)
+    os.makedirs(chat_dir, exist_ok=True)
+
+    safe_name = Path(filename).name.replace(" ", "_")
+    stored_name = f"{attachment_id}_{safe_name}"
+    storage_path = os.path.join(chat_dir, stored_name)
+
+    with open(storage_path, "wb") as f:
+        f.write(content)
+
+    text_extract = None
+    if file_type == "text":
+        text_extract = _extract_text_content(storage_path)
+    elif file_type == "document":
+        text_extract = _extract_pdf_text(storage_path)
+
+    return {
+        "id": attachment_id,
+        "filename": stored_name,
+        "original_filename": filename,
+        "mime_type": mime,
+        "file_type": file_type,
+        "file_size": len(content),
+        "storage_path": storage_path,
+        "text_extract": text_extract,
+    }
+
+
+def delete_attachment_file(storage_path):
+    try:
+        if os.path.exists(storage_path):
+            os.remove(storage_path)
+    except Exception:
+        pass
+
+
+def delete_chat_attachments(chat_id):
+    chat_dir = os.path.join(config.ATTACHMENT_PATH, chat_id)
+    if os.path.isdir(chat_dir):
+        shutil.rmtree(chat_dir, ignore_errors=True)
+
+
+def build_claude_content_blocks(attachments):
+    blocks = []
+    for att in attachments:
+        try:
+            result = _process_single_attachment(att)
+            if isinstance(result, list):
+                blocks.extend(result)
+            elif result:
+                blocks.append(result)
+        except Exception as e:
+            blocks.append({
+                "type": "text",
+                "text": f"[Failed to process {att.original_filename}: {str(e)}]",
+            })
+    return blocks
+
+
+def _process_single_attachment(att):
+    if att.file_type == "image":
+        return _build_image_block(att)
+    elif att.file_type == "video":
+        return _build_video_blocks(att)
+    elif att.file_type == "document":
+        return _build_document_block(att)
+    elif att.file_type == "text":
+        return _build_text_block(att)
+    return None
+
+
+def _build_image_block(att):
+    data = _read_and_resize_image(att.storage_path, att.mime_type)
+    mime = att.mime_type if att.mime_type in IMAGE_MIMES else "image/jpeg"
+    return {
+        "type": "image",
+        "source": {"type": "base64", "media_type": mime, "data": data},
+    }
+
+
+def _build_video_blocks(att):
+    frames = _extract_video_frames(att.storage_path)
+    if not frames:
+        return [{"type": "text", "text": f"[Video: {att.original_filename} - could not extract frames]"}]
+    blocks = [{"type": "text", "text": f"[Video: {att.original_filename} - {len(frames)} frames extracted]"}]
+    for frame_b64 in frames:
+        blocks.append({
+            "type": "image",
+            "source": {"type": "base64", "media_type": "image/jpeg", "data": frame_b64},
+        })
+    return blocks
+
+
+def _build_document_block(att):
+    if att.mime_type == "application/pdf":
+        with open(att.storage_path, "rb") as f:
+            data = base64.b64encode(f.read()).decode("utf-8")
+        return {
+            "type": "document",
+            "source": {"type": "base64", "media_type": "application/pdf", "data": data},
+        }
+    return _build_text_block(att)
+
+
+def _build_text_block(att):
+    text = att.text_extract or _extract_text_content(att.storage_path)
+    if not text:
+        text = f"[Could not extract text from {att.original_filename}]"
+    return {
+        "type": "text",
+        "text": f"--- File: {att.original_filename} ---\n{text}\n--- End of {att.original_filename} ---",
+    }
+
+
+def _read_and_resize_image(path, mime_type):
+    try:
+        from PIL import Image
+        img = Image.open(path)
+        if img.mode in ("RGBA", "LA", "P"):
+            bg = Image.new("RGB", img.size, (255, 255, 255))
+            if img.mode == "P":
+                img = img.convert("RGBA")
+            bg.paste(img, mask=img.split()[-1] if "A" in img.mode else None)
+            img = bg
+        elif img.mode != "RGB":
+            img = img.convert("RGB")
+        mx = config.MAX_IMAGE_DIMENSION
+        if img.width > mx or img.height > mx:
+            ratio = min(mx / img.width, mx / img.height)
+            img = img.resize((int(img.width * ratio), int(img.height * ratio)), Image.LANCZOS)
+        buf = io.BytesIO()
+        fmt = "PNG" if mime_type == "image/png" else "JPEG"
+        kwargs = {"quality": 85} if fmt == "JPEG" else {}
+        img.save(buf, format=fmt, **kwargs)
+        return base64.b64encode(buf.getvalue()).decode("utf-8")
+    except ImportError:
+        with open(path, "rb") as f:
+            return base64.b64encode(f.read()).decode("utf-8")
+    except Exception:
+        with open(path, "rb") as f:
+            return base64.b64encode(f.read()).decode("utf-8")
+
+
+def _extract_video_frames(video_path):
+    if not shutil.which("ffmpeg") or not shutil.which("ffprobe"):
+        return []
+    frames = []
+    try:
+        result = subprocess.run(
+            ["ffprobe", "-v", "error", "-show_entries", "format=duration",
+             "-of", "default=noprint_wrappers=1:nokey=1", video_path],
+            capture_output=True, text=True, timeout=30,
+        )
+        duration = float(result.stdout.strip() or "0")
+        if duration <= 0:
+            return []
+        max_frames = config.MAX_VIDEO_FRAMES
+        with tempfile.TemporaryDirectory() as tmpdir:
+            interval = duration / (max_frames + 1)
+            for i in range(max_frames):
+                ts = interval * (i + 1)
+                out = os.path.join(tmpdir, f"frame_{i}.jpg")
+                subprocess.run(
+                    ["ffmpeg", "-ss", str(ts), "-i", video_path, "-vframes", "1",
+                     "-vf", f"scale='min({config.MAX_IMAGE_DIMENSION},iw)':'min({config.MAX_IMAGE_DIMENSION},ih)':force_original_aspect_ratio=decrease",
+                     "-q:v", "3", out],
+                    capture_output=True, timeout=30,
+                )
+                if os.path.exists(out) and os.path.getsize(out) > 0:
+                    with open(out, "rb") as f:
+                        frames.append(base64.b64encode(f.read()).decode("utf-8"))
+    except Exception:
+        pass
+    return frames
+
+
+def _extract_text_content(path):
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            return f.read(500_000)
+    except UnicodeDecodeError:
+        try:
+            with open(path, "r", encoding="latin-1") as f:
+                return f.read(500_000)
+        except Exception:
+            return None
+    except Exception:
+        return None
+
+
+def _extract_pdf_text(path):
+    try:
+        from PyPDF2 import PdfReader
+        reader = PdfReader(path)
+        pages = []
+        for page in reader.pages[:100]:
+            text = page.extract_text()
+            if text:
+                pages.append(text)
+        return "\n\n".join(pages) if pages else None
+    except Exception:
+        return None
+ENDOFFILE
+ok "backend/services/attachment_service.py"
+
+# ────────────────────────────────────────
+# backend/routes/attachment_routes.py
+# ────────────────────────────────────────
+step "backend/routes/attachment_routes.py"
+cat > backend/routes/attachment_routes.py << 'ENDOFFILE'
+"""
+Chat attachment upload, serve, and delete routes.
+"""
+
+import os
+from typing import Optional
+
+from fastapi import APIRouter, Depends, HTTPException, UploadFile, File, Query, Request
+from fastapi.responses import FileResponse
+from sqlalchemy.orm import Session
+
+from backend.database import get_db
+from backend.models import User, Chat, ChatAttachment
+from backend.auth import get_current_user, decode_token
+from backend.services import attachment_service
+from backend.config import MAX_ATTACHMENT_BYTES
+
+router = APIRouter()
+
+
+def _get_user_flexible(request: Request, db: Session, token_param: Optional[str] = None) -> User:
+    raw_token = None
+    auth_header = request.headers.get("authorization", "")
+    if auth_header.startswith("Bearer "):
+        raw_token = auth_header[7:]
+    if not raw_token and token_param:
+        raw_token = token_param
+    if not raw_token:
+        raise HTTPException(401, "Authentication required")
+    payload = decode_token(raw_token)
+    user = db.query(User).filter(User.id == payload["sub"]).first()
+    if not user or not user.is_active:
+        raise HTTPException(401, "User not found or inactive")
+    return user
+
+
+@router.post("/chats/{chat_id}/attachments")
+async def upload_attachments(
+    chat_id: str,
+    files: list[UploadFile] = File(...),
+    user: User = Depends(get_current_user),
+    db: Session = Depends(get_db),
+):
+    chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
+    if not chat:
+        raise HTTPException(404, "Chat not found")
+
+    results = []
+    for file in files:
+        filename = file.filename or "file"
+        try:
+            content = await file.read()
+            if len(content) > MAX_ATTACHMENT_BYTES:
+                results.append({"error": f"Too large: {filename}"})
+                continue
+
+            meta = attachment_service.save_attachment(
+                chat_id=chat_id, filename=filename,
+                content=content, content_type=file.content_type,
+            )
+
+            att = ChatAttachment(
+                id=meta["id"], chat_id=chat_id,
+                filename=meta["filename"],
+                original_filename=meta["original_filename"],
+                mime_type=meta["mime_type"],
+                file_type=meta["file_type"],
+                file_size=meta["file_size"],
+                storage_path=meta["storage_path"],
+                text_extract=meta.get("text_extract"),
+            )
+            db.add(att)
+            db.commit()
+            db.refresh(att)
+            results.append(_att_dict(att))
+        except Exception as e:
+            results.append({"error": f"Failed: {filename}: {str(e)}"})
+
+    return {"attachments": results}
+
+
+@router.get("/attachments/{attachment_id}/file")
+def serve_attachment(
+    attachment_id: str,
+    request: Request,
+    token: Optional[str] = Query(None),
+    db: Session = Depends(get_db),
+):
+    user = _get_user_flexible(request, db, token)
+    att = db.query(ChatAttachment).filter(ChatAttachment.id == attachment_id).first()
+    if not att:
+        raise HTTPException(404, "Attachment not found")
+    chat = db.query(Chat).filter(Chat.id == att.chat_id).first()
+    if not chat or (chat.user_id != user.id and user.role != "superadmin"):
+        raise HTTPException(403, "Access denied")
+    if not os.path.exists(att.storage_path):
+        raise HTTPException(404, "File not found on disk")
+    return FileResponse(att.storage_path, media_type=att.mime_type, filename=att.original_filename)
+
+
+@router.delete("/attachments/{attachment_id}")
+def delete_attachment(
+    attachment_id: str,
+    user: User = Depends(get_current_user),
+    db: Session = Depends(get_db),
+):
+    att = db.query(ChatAttachment).filter(ChatAttachment.id == attachment_id).first()
+    if not att:
+        raise HTTPException(404)
+    chat = db.query(Chat).filter(Chat.id == att.chat_id).first()
+    if not chat or (chat.user_id != user.id and user.role != "superadmin"):
+        raise HTTPException(403)
+    attachment_service.delete_attachment_file(att.storage_path)
+    db.delete(att)
+    db.commit()
+    return {"ok": True}
+
+
+def _att_dict(att):
+    return {
+        "id": att.id, "chat_id": att.chat_id, "message_id": att.message_id,
+        "filename": att.filename, "original_filename": att.original_filename,
+        "mime_type": att.mime_type, "file_type": att.file_type,
+        "file_size": att.file_size, "created_at": str(att.created_at),
+    }
+ENDOFFILE
+ok "backend/routes/attachment_routes.py"
+
+# ────────────────────────────────────────
+# backend/routes/chat_routes.py
+# ────────────────────────────────────────
+step "backend/routes/chat_routes.py"
+cat > backend/routes/chat_routes.py << 'ENDOFFILE'
+"""
+Chat CRUD and message streaming with multimodal attachment support.
+"""
+
+import json
+from datetime import datetime
+from pydantic import BaseModel
+from typing import Optional
+
+from fastapi import APIRouter, Depends, HTTPException
+from fastapi.responses import StreamingResponse
+from sqlalchemy.orm import Session
+
+from backend.database import get_db, SessionLocal
+from backend.models import User, Chat, Message, ChatAttachment
+from backend.auth import get_current_user
+from backend.system_prompt import build_full_prompt
+from backend.services import bedrock_service, memory_service, rag_service, attachment_service
+
+router = APIRouter()
+
+
+class CreateChatBody(BaseModel):
+    title: str = "New Chat"
+    model: str = "eu.anthropic.claude-opus-4-6-v1"
+    knowledge_base_id: Optional[str] = None
+    max_tokens: int = 4096
+    reasoning_budget: int = 0
+
+
+class UpdateChatBody(BaseModel):
+    title: Optional[str] = None
+    model: Optional[str] = None
+    max_tokens: Optional[int] = None
+    reasoning_budget: Optional[int] = None
+    knowledge_base_id: Optional[str] = None
+
+
+class SendMessageBody(BaseModel):
+    content: str
+    model: Optional[str] = None
+    max_tokens: int = 4096
+    reasoning_budget: int = 0
+    knowledge_base_id: Optional[str] = None
+    attachment_ids: list[str] = []
+
+
+@router.get("")
+def list_chats(user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    chats = db.query(Chat).filter(Chat.user_id == user.id).order_by(Chat.updated_at.desc()).all()
+    return [_chat_dict(c) for c in chats]
+
+
+@router.post("")
+def create_chat(body: CreateChatBody, user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    chat = Chat(
+        user_id=user.id, title=body.title, model=body.model,
+        knowledge_base_id=body.knowledge_base_id or None,
+        max_tokens=body.max_tokens, reasoning_budget=body.reasoning_budget,
+    )
+    db.add(chat)
+    db.commit()
+    db.refresh(chat)
+    return _chat_dict(chat)
+
+
+@router.get("/{chat_id}")
+def get_chat(chat_id: str, user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
+    if not chat:
+        raise HTTPException(404, "Chat not found")
+    return _chat_dict(chat)
+
+
+@router.put("/{chat_id}")
+def update_chat(chat_id: str, body: UpdateChatBody, user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
+    if not chat:
+        raise HTTPException(404)
+    if body.title is not None:
+        chat.title = body.title
+    if body.model is not None:
+        chat.model = body.model
+    if body.max_tokens is not None:
+        chat.max_tokens = body.max_tokens
+    if body.reasoning_budget is not None:
+        chat.reasoning_budget = body.reasoning_budget
+    if body.knowledge_base_id is not None:
+        chat.knowledge_base_id = body.knowledge_base_id or None
+    db.commit()
+    return _chat_dict(chat)
+
+
+@router.delete("/{chat_id}")
+def delete_chat(chat_id: str, user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
+    if not chat:
+        raise HTTPException(404)
+    attachment_service.delete_chat_attachments(chat_id)
+    db.delete(chat)
+    db.commit()
+    return {"ok": True}
+
+
+@router.get("/{chat_id}/messages")
+def get_messages(chat_id: str, user: User = Depends(get_current_user), db: Session = Depends(get_db)):
+    chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
+    if not chat:
+        raise HTTPException(404)
+    msgs = []
+    for m in chat.messages:
+        d = _msg_dict(m)
+        atts = db.query(ChatAttachment).filter(ChatAttachment.message_id == m.id).all()
+        d["attachments"] = [_att_brief(a) for a in atts]
+        msgs.append(d)
+    return msgs
+
+
+@router.post("/{chat_id}/messages")
+async def send_message(chat_id: str, body: SendMessageBody, user: User = Depends(get_current_user)):
+    user_id = user.id
+
+    async def generate():
+        db = SessionLocal()
+        try:
+            chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user_id).first()
+            if not chat:
+                yield _sse({"type": "error", "message": "Chat not found"})
+                return
+
+            db_user = db.query(User).filter(User.id == user_id).first()
+
+            now = datetime.utcnow()
+            if db_user.quota_reset_date and now >= db_user.quota_reset_date:
+                db_user.tokens_used_this_month = 0
+                if now.month == 12:
+                    db_user.quota_reset_date = datetime(now.year + 1, 1, 1)
+                else:
+                    db_user.quota_reset_date = datetime(now.year, now.month + 1, 1)
+                db.commit()
+
+            if db_user.tokens_used_this_month >= db_user.quota_tokens_monthly:
+                yield _sse({"type": "error", "message": "Monthly token quota exceeded."})
+                return
+
+            attachments = []
+            if body.attachment_ids:
+                attachments = (
+                    db.query(ChatAttachment)
+                    .filter(ChatAttachment.id.in_(body.attachment_ids), ChatAttachment.chat_id == chat_id)
+                    .all()
+                )
+
+            stored_content = body.content
+            if attachments:
+                labels = {"image": "Image", "video": "Video", "document": "Document", "text": "File"}
+                notes = [f"[{labels.get(a.file_type, 'File')}: {a.original_filename}]" for a in attachments]
+                stored_content = "\n".join(notes) + "\n" + body.content
+
+            user_msg = Message(chat_id=chat_id, role="user", content=stored_content)
+            db.add(user_msg)
+            db.commit()
+            db.refresh(user_msg)
+
+            for att in attachments:
+                att.message_id = user_msg.id
+            if attachments:
+                db.commit()
+
+            kb_id = body.knowledge_base_id or chat.knowledge_base_id
+            rag_context = None
+            if kb_id:
+                try:
+                    rag_context = rag_service.query(kb_id, body.content, n_results=8)
+                except Exception:
+                    pass
+
+            system_prompt = build_full_prompt(rag_context)
+            messages = memory_service.build_messages(chat, db)
+
+            if attachments and messages and messages[-1]["role"] == "user":
+                content_blocks = attachment_service.build_claude_content_blocks(attachments)
+                content_blocks.append({"type": "text", "text": body.content})
+                messages[-1]["content"] = content_blocks
+
+            model_id = body.model or chat.model
+            max_tokens = body.max_tokens
+            thinking_config = None
+            if body.reasoning_budget > 0:
+                thinking_config = {"enabled": True, "budget_tokens": body.reasoning_budget}
+                max_tokens = max_tokens + body.reasoning_budget
+
+            full_text = ""
+            full_thinking = ""
+            input_tokens = 0
+            output_tokens = 0
+            current_block_type = "text"
+
+            async for event in bedrock_service.stream_response(
+                messages=messages, system_prompt=system_prompt,
+                model_id=model_id, max_tokens=min(max_tokens, 65536),
+                thinking_config=thinking_config,
+            ):
+                evt_type = event.get("type", "")
+
+                if evt_type == "message_start":
+                    usage = event.get("message", {}).get("usage", {})
+                    input_tokens = usage.get("input_tokens", 0)
+                elif evt_type == "content_block_start":
+                    blk = event.get("content_block", {})
+                    current_block_type = blk.get("type", "text")
+                    if current_block_type == "thinking":
+                        yield _sse({"type": "thinking_start"})
+                elif evt_type == "content_block_delta":
+                    delta = event.get("delta", {})
+                    dt = delta.get("type", "")
+                    if dt == "thinking_delta":
+                        t = delta.get("thinking", "")
+                        full_thinking += t
+                        yield _sse({"type": "thinking_delta", "content": t})
+                    elif dt == "text_delta":
+                        t = delta.get("text", "")
+                        full_text += t
+                        yield _sse({"type": "text_delta", "content": t})
+                elif evt_type == "content_block_stop":
+                    if current_block_type == "thinking":
+                        yield _sse({"type": "thinking_end"})
+                elif evt_type == "message_delta":
+                    usage = event.get("usage", {})
+                    output_tokens = usage.get("output_tokens", 0)
+
+            assistant_msg = Message(
+                chat_id=chat_id, role="assistant", content=full_text,
+                thinking_content=full_thinking or None,
+                input_tokens=input_tokens, output_tokens=output_tokens,
+            )
+            db.add(assistant_msg)
+            db_user.tokens_used_this_month += input_tokens + output_tokens
+            chat.model = model_id
+            chat.max_tokens = body.max_tokens
+            chat.reasoning_budget = body.reasoning_budget
+            chat.knowledge_base_id = body.knowledge_base_id or None
+            chat.updated_at = datetime.utcnow()
+            db.commit()
+
+            msg_count = db.query(Message).filter(Message.chat_id == chat_id).count()
+            if msg_count <= 2 and chat.title == "New Chat":
+                try:
+                    title = await _generate_title(body.content, full_text[:300])
+                    chat.title = title[:120]
+                    db.commit()
+                    yield _sse({"type": "title_update", "title": chat.title})
+                except Exception:
+                    pass
+
+            yield _sse({"type": "usage", "input_tokens": input_tokens, "output_tokens": output_tokens})
+            yield _sse({"type": "done", "message_id": assistant_msg.id})
+
+        except Exception as exc:
+            yield _sse({"type": "error", "message": str(exc)})
+        finally:
+            db.close()
+
+    return StreamingResponse(generate(), media_type="text/event-stream")
+
+
+async def _generate_title(user_msg, ai_msg):
+    from backend.config import FAST_MODEL
+    result = await bedrock_service.invoke_model_simple(
+        model_id=FAST_MODEL,
+        prompt=f"Generate a concise title (max 6 words) for this conversation:\nUser: {user_msg[:200]}\nAssistant: {ai_msg[:200]}\nRespond ONLY with the title.",
+        max_tokens=30,
+    )
+    return result.strip().strip('"').strip("'")
+
+
+def _sse(data):
+    return f"data: {json.dumps(data)}\n\n"
+
+
+def _chat_dict(c):
+    return {
+        "id": c.id, "title": c.title, "model": c.model,
+        "knowledge_base_id": c.knowledge_base_id,
+        "max_tokens": c.max_tokens or 4096,
+        "reasoning_budget": c.reasoning_budget or 0,
+        "created_at": str(c.created_at), "updated_at": str(c.updated_at),
+    }
+
+
+def _msg_dict(m):
+    return {
+        "id": m.id, "role": m.role, "content": m.content,
+        "thinking_content": m.thinking_content,
+        "input_tokens": m.input_tokens, "output_tokens": m.output_tokens,
+        "created_at": str(m.created_at),
+    }
+
+
+def _att_brief(a):
+    return {
+        "id": a.id, "original_filename": a.original_filename,
+        "mime_type": a.mime_type, "file_type": a.file_type,
+        "file_size": a.file_size,
+    }
+ENDOFFILE
+ok "backend/routes/chat_routes.py"
+
+# ────────────────────────────────────────
+# backend/services/memory_service.py
+# ────────────────────────────────────────
+step "backend/services/memory_service.py"
+cat > backend/services/memory_service.py << 'ENDOFFILE'
+"""
+Build the messages list for the Bedrock/Anthropic API from chat history.
+"""
+
+from sqlalchemy.orm import Session
+from backend.models import Chat, Message
+
+MAX_CONTEXT_CHARS = 400_000
+MAX_MESSAGES = 80
+
+
+def build_messages(chat: Chat, db: Session) -> list[dict]:
+    rows: list[Message] = (
+        db.query(Message)
+        .filter(Message.chat_id == chat.id)
+        .order_by(Message.created_at.desc())
+        .limit(MAX_MESSAGES)
+        .all()
+    )
+    rows.reverse()
+
+    if not rows:
+        return []
+
+    total_chars = sum(len(m.content or "") for m in rows)
+    idx = 0
+    while total_chars > MAX_CONTEXT_CHARS and idx < len(rows) - 2:
+        total_chars -= len(rows[idx].content or "")
+        idx += 1
+
+    trimmed = rows[idx:]
+
+    while trimmed and trimmed[0].role != "user":
+        trimmed = trimmed[1:]
+
+    result: list[dict] = []
+    for m in trimmed:
+        content = m.content or ""
+        if not content.strip():
+            continue
+        role = m.role
+        if role not in ("user", "assistant"):
+            continue
+        if result and result[-1]["role"] == role:
+            result[-1]["content"] += "\n" + content
+        else:
+            result.append({"role": role, "content": content})
+
+    return result
+ENDOFFILE
+ok "backend/services/memory_service.py"
+
+# ────────────────────────────────────────
+# frontend/src/api.js
+# ────────────────────────────────────────
+step "frontend/src/api.js"
+cat > frontend/src/api.js << 'ENDOFFILE'
+const BASE = "/api";
+
+function headers(token) {
+  const h = { "Content-Type": "application/json" };
+  if (token) h["Authorization"] = `Bearer ${token}`;
+  return h;
+}
+
+function authHeader(token) {
+  return token ? { Authorization: `Bearer ${token}` } : {};
+}
+
+async function request(method, path, token, body) {
+  const opts = { method, headers: headers(token) };
+  if (body) opts.body = JSON.stringify(body);
+  const res = await fetch(`${BASE}${path}`, opts);
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ detail: res.statusText }));
+    throw new Error(err.detail || err.message || "Request failed");
+  }
+  return res.json();
+}
+
+export const login = (username, password) =>
+  request("POST", "/auth/login", null, { username, password });
+
+export const register = (username, email, password) =>
+  request("POST", "/auth/register", null, { username, email, password });
+
+export const getMe = (token) => request("GET", "/auth/me", token);
+
+export const listChats = (token) => request("GET", "/chats", token);
+
+export const createChat = (token, data = {}) => request("POST", "/chats", token, data);
+
+export const updateChat = (token, chatId, data) =>
+  request("PUT", `/chats/${chatId}`, token, data);
+
+export const renameChat = (token, chatId, title) =>
+  updateChat(token, chatId, { title });
+
+export const deleteChat = (token, chatId) =>
+  request("DELETE", `/chats/${chatId}`, token);
+
+export const getMessages = (token, chatId) =>
+  request("GET", `/chats/${chatId}/messages`, token);
+
+export async function* streamMessage(token, chatId, body, signal) {
+  const res = await fetch(`${BASE}/chats/${chatId}/messages`, {
+    method: "POST", headers: headers(token),
+    body: JSON.stringify(body), signal,
+  });
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ detail: res.statusText }));
+    throw new Error(err.detail || "Stream failed");
+  }
+  const reader = res.body.getReader();
+  const decoder = new TextDecoder();
+  let buffer = "";
+  while (true) {
+    const { done, value } = await reader.read();
+    if (done) break;
+    buffer += decoder.decode(value, { stream: true });
+    const parts = buffer.split("\n\n");
+    buffer = parts.pop() || "";
+    for (const part of parts) {
+      const line = part.trim();
+      if (line.startsWith("data: ")) {
+        try { yield JSON.parse(line.slice(6)); } catch { }
+      }
+    }
+  }
+  if (buffer.trim().startsWith("data: ")) {
+    try { yield JSON.parse(buffer.trim().slice(6)); } catch { }
+  }
+}
+
+export async function uploadAttachments(token, chatId, files) {
+  const form = new FormData();
+  for (const file of files) form.append("files", file);
+  const res = await fetch(`${BASE}/chats/${chatId}/attachments`, {
+    method: "POST", headers: authHeader(token), body: form,
+  });
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({}));
+    throw new Error(err.detail || "Upload failed");
+  }
+  return res.json();
+}
+
+export function getAttachmentUrl(attachmentId) {
+  return `${BASE}/attachments/${attachmentId}/file`;
+}
+
+export const deleteAttachment = (token, attachmentId) =>
+  request("DELETE", `/attachments/${attachmentId}`, token);
+
+export const listKnowledgeBases = (token) => request("GET", "/knowledge", token);
+
+export const createKnowledgeBase = (token, name, description = "") =>
+  request("POST", "/knowledge", token, { name, description });
+
+export const getKnowledgeBase = (token, kbId) =>
+  request("GET", `/knowledge/${kbId}`, token);
+
+export const deleteKnowledgeBase = (token, kbId) =>
+  request("DELETE", `/knowledge/${kbId}`, token);
+
+export async function uploadDocuments(token, kbId, files) {
+  const form = new FormData();
+  for (const file of files) form.append("files", file);
+  const res = await fetch(`${BASE}/knowledge/${kbId}/upload`, {
+    method: "POST", headers: authHeader(token), body: form,
+  });
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({}));
+    throw new Error(err.detail || "Upload failed");
+  }
+  return res.json();
+}
+
+export const uploadDocument = (token, kbId, file) =>
+  uploadDocuments(token, kbId, [file]);
+
+export const adminStats = (token) => request("GET", "/admin/stats", token);
+
+export const adminListUsers = (token) => request("GET", "/admin/users", token);
+
+export const adminCreateUser = (token, data) =>
+  request("POST", "/admin/users", token, data);
+
+export const adminUpdateUser = (token, userId, data) =>
+  request("PUT", `/admin/users/${userId}`, token, data);
+
+export const adminDeleteUser = (token, userId) =>
+  request("DELETE", `/admin/users/${userId}`, token);
+
+export const adminListChats = (token) => request("GET", "/admin/chats", token);
+
+export async function downloadZip(token, markdown) {
+  const res = await fetch(`${BASE}/files/download-zip`, {
+    method: "POST", headers: headers(token),
+    body: JSON.stringify({ markdown }),
+  });
+  if (!res.ok) throw new Error("Download failed");
+  const ct = res.headers.get("content-type") || "";
+  if (ct.includes("application/zip")) {
+    const blob = await res.blob();
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = "son-of-anton-code.zip";
+    a.click();
+    URL.revokeObjectURL(url);
+  } else {
+    const data = await res.json();
+    if (data.error) throw new Error(data.error);
+  }
+}
+ENDOFFILE
+ok "frontend/src/api.js"
+
+# ────────────────────────────────────────
+# frontend/src/components/MessageBubble.jsx
+# ────────────────────────────────────────
+step "frontend/src/components/MessageBubble.jsx"
+cat > frontend/src/components/MessageBubble.jsx << 'ENDOFFILE'
+import React, { useState } from "react";
+import ReactMarkdown from "react-markdown";
+import remarkGfm from "remark-gfm";
+import CodeBlock from "./CodeBlock";
+import { getAttachmentUrl } from "../api";
+import {
+  User, Flame, ChevronDown, ChevronRight, Brain, Copy, Check,
+  Image, Film, FileText, ExternalLink,
+} from "lucide-react";
+
+const FILE_TYPE_ICONS = {
+  image: Image, video: Film, document: FileText, text: FileText,
+};
+
+const MessageBubble = React.memo(function MessageBubble({ message, isStreaming, isThinking, token }) {
+  const { role, content, thinking_content, input_tokens, output_tokens, attachments } = message;
+  const isUser = role === "user";
+  const [showThinking, setShowThinking] = useState(false);
+  const [copied, setCopied] = useState(false);
+  const [expandedImage, setExpandedImage] = useState(null);
+
+  function handleCopy() {
+    navigator.clipboard.writeText(content || "");
+    setCopied(true);
+    setTimeout(() => setCopied(false), 2000);
+  }
+
+  const hasAttachments = attachments && attachments.length > 0;
+
+  return (
+    <div className={`flex gap-3 animate-fade-in ${isUser ? "justify-end" : ""}`}>
+      {!isUser && (
+        <div className="shrink-0 mt-1">
+          <div className="w-8 h-8 rounded-lg bg-gradient-to-br from-anton-accent to-red-600 flex items-center justify-center shadow-lg shadow-anton-accent/10">
+            <Flame size={16} className="text-white" />
+          </div>
+        </div>
+      )}
+
+      <div className={`max-w-[80%] ${isUser ? "order-first" : ""}`}>
+        {thinking_content && (
+          <div className="mb-2">
+            <button onClick={() => setShowThinking(!showThinking)}
+              className="flex items-center gap-1.5 text-xs text-purple-400 hover:text-purple-300 transition mb-1">
+              <Brain size={12} />
+              {showThinking ? <ChevronDown size={12} /> : <ChevronRight size={12} />}
+              {isThinking ? <span className="thinking-pulse">Reasoning…</span> : <span>View reasoning</span>}
+            </button>
+            {(showThinking || isThinking) && (
+              <div className="bg-purple-500/5 border border-purple-500/20 rounded-lg p-3 text-xs text-purple-300/80 font-mono whitespace-pre-wrap max-h-60 overflow-y-auto">
+                {thinking_content}
+                {isThinking && <span className="inline-block w-1.5 h-4 bg-purple-400 ml-0.5 animate-pulse" />}
+              </div>
+            )}
+          </div>
+        )}
+
+        {hasAttachments && (
+          <div className="mb-2 flex flex-wrap gap-2">
+            {attachments.map((att) => {
+              const Icon = FILE_TYPE_ICONS[att.file_type] || FileText;
+              const url = getAttachmentUrl(att.id);
+              if (att.file_type === "image") {
+                return (
+                  <div key={att.id} className="relative group">
+                    <img src={`${url}?token=${token}`} alt={att.original_filename}
+                      className="max-w-[240px] max-h-[200px] rounded-lg border border-anton-border object-cover cursor-pointer hover:opacity-90 transition"
+                      onClick={() => setExpandedImage(expandedImage === att.id ? null : att.id)}
+                      onError={(e) => { e.target.style.display = "none"; }} />
+                    {expandedImage === att.id && (
+                      <div className="fixed inset-0 z-50 bg-black/80 flex items-center justify-center p-8 cursor-pointer"
+                        onClick={() => setExpandedImage(null)}>
+                        <img src={`${url}?token=${token}`} alt={att.original_filename}
+                          className="max-w-full max-h-full object-contain rounded-lg" />
+                      </div>
+                    )}
+                    <div className="absolute bottom-1 left-1 bg-black/60 text-[9px] text-white px-1.5 py-0.5 rounded">
+                      {att.original_filename}
+                    </div>
+                  </div>
+                );
+              }
+              return (
+                <a key={att.id} href={`${url}?token=${token}`} target="_blank" rel="noopener noreferrer"
+                  className="flex items-center gap-2 bg-anton-card border border-anton-border rounded-lg px-3 py-2 hover:border-anton-accent transition group">
+                  <Icon size={16} className="shrink-0 text-blue-400" />
+                  <div className="min-w-0">
+                    <div className="text-xs text-white truncate max-w-[160px]">{att.original_filename}</div>
+                    <div className="text-[10px] text-anton-muted">{(att.file_size / 1024).toFixed(0)}KB</div>
+                  </div>
+                  <ExternalLink size={12} className="text-anton-muted group-hover:text-anton-accent shrink-0" />
+                </a>
+              );
+            })}
+          </div>
+        )}
+
+        <div className={`rounded-2xl px-4 py-3 ${
+          isUser ? "bg-anton-accent text-white rounded-br-md" : "bg-anton-card border border-anton-border rounded-bl-md"
+        }`}>
+          {isUser ? (
+            <div className="text-sm whitespace-pre-wrap">{_stripPrefixes(content)}</div>
+          ) : (
+            <div className="prose-anton text-sm">
+              <ReactMarkdown remarkPlugins={[remarkGfm]} components={{
+                code({ node, inline, className, children, ...props }) {
+                  const match = /language-(\S+)/.exec(className || "");
+                  const rawLang = match?.[1] || "";
+                  if (inline) return <code className={className} {...props}>{children}</code>;
+                  let lang = rawLang, filename = null;
+                  if (rawLang.includes(":")) {
+                    const idx = rawLang.indexOf(":");
+                    lang = rawLang.slice(0, idx);
+                    filename = rawLang.slice(idx + 1);
+                  }
+                  return <CodeBlock language={lang} filename={filename} code={String(children).replace(/\n$/, "")} />;
+                },
+                pre({ children }) { return <>{children}</>; },
+              }}>
+                {content || ""}
+              </ReactMarkdown>
+              {isStreaming && !isThinking && (
+                <span className="inline-block w-1.5 h-4 bg-anton-accent ml-0.5 animate-pulse" />
+              )}
+            </div>
+          )}
+        </div>
+
+        {!isUser && !isStreaming && content && (
+          <div className="flex items-center gap-3 mt-1.5 px-1">
+            <button onClick={handleCopy} className="flex items-center gap-1 text-[11px] text-anton-muted hover:text-white transition">
+              {copied ? <Check size={11} className="text-anton-success" /> : <Copy size={11} />}
+              {copied ? "Copied" : "Copy"}
+            </button>
+            {(input_tokens > 0 || output_tokens > 0) && (
+              <span className="text-[11px] text-anton-muted">
+                {input_tokens?.toLocaleString()}↓ / {output_tokens?.toLocaleString()}↑ tokens
+              </span>
+            )}
+          </div>
+        )}
+      </div>
+
+      {isUser && (
+        <div className="shrink-0 mt-1">
+          <div className="w-8 h-8 rounded-lg bg-anton-card border border-anton-border flex items-center justify-center">
+            <User size={16} className="text-anton-muted" />
+          </div>
+        </div>
+      )}
+    </div>
+  );
+});
+
+function _stripPrefixes(text) {
+  if (!text) return "";
+  return text.replace(/^\[(?:Image|Video|Document|File):\s[^\]]*\]\n?/gm, "").trim();
+}
+
+export default MessageBubble;
+ENDOFFILE
+ok "frontend/src/components/MessageBubble.jsx"
+
+# ────────────────────────────────────────
+# frontend/src/components/ChatView.jsx
+# ────────────────────────────────────────
+step "frontend/src/components/ChatView.jsx"
+cat > frontend/src/components/ChatView.jsx << 'ENDOFFILE'
+import React, { useState, useEffect, useRef, useCallback } from "react";
+import { useApp } from "../store";
+import { getMessages, downloadZip, listKnowledgeBases, updateChat, uploadAttachments } from "../api";
+import * as streamManager from "../streamManager";
+import MessageBubble from "./MessageBubble";
+import { Send, Square, Settings2, X, Brain, BookOpen, Paperclip, Image, FileText, Film, Loader2 } from "lucide-react";
+
+const MODELS = [
+  { id: "eu.anthropic.claude-opus-4-6-v1", label: "Claude Opus 4.6 (Primary)" },
+  { id: "eu.anthropic.claude-haiku-4-5-20251001-v1:0", label: "Claude Haiku 4.5 (Fast)" },
+];
+
+function classifyFile(file) {
+  const ext = (file.name || "").split(".").pop().toLowerCase();
+  const mime = file.type || "";
+  if (mime.startsWith("image/") || ["jpg","jpeg","png","gif","webp","bmp"].includes(ext)) return "image";
+  if (mime.startsWith("video/") || ["mp4","mov","avi","mkv","webm"].includes(ext)) return "video";
+  if (mime === "application/pdf" || ext === "pdf") return "document";
+  return "text";
+}
+
+export default function ChatView({ chatId }) {
+  const { state, dispatch } = useApp();
+  const currentChat = state.chats.find((c) => c.id === chatId);
+  const messages = state.chatMessages[chatId] || [];
+  const isStreamingGlobal = !!state.activeStreams[chatId];
+
+  const [input, setInput] = useState("");
+  const [showSettings, setShowSettings] = useState(false);
+  const [model, setModel] = useState(currentChat?.model || MODELS[0].id);
+  const [maxTokens, setMaxTokens] = useState(currentChat?.max_tokens || 4096);
+  const [reasoningBudget, setReasoningBudget] = useState(currentChat?.reasoning_budget ?? 0);
+  const [selectedKbId, setSelectedKbId] = useState(currentChat?.knowledge_base_id || null);
+  const [kbs, setKbs] = useState([]);
+  const [pendingFiles, setPendingFiles] = useState([]);
+  const [uploading, setUploading] = useState(false);
+  const [streamData, setStreamData] = useState(streamManager.getStreamData(chatId));
+
+  const scrollRef = useRef(null);
+  const inputRef = useRef(null);
+  const fileRef = useRef(null);
+  const autoScroll = useRef(true);
+  const rafRef = useRef(null);
+
+  useEffect(() => {
+    setStreamData(streamManager.getStreamData(chatId));
+    return streamManager.subscribe(chatId, () => setStreamData(streamManager.getStreamData(chatId)));
+  }, [chatId]);
+
+  function onScroll() {
+    const el = scrollRef.current;
+    if (!el) return;
+    autoScroll.current = el.scrollHeight - el.scrollTop - el.clientHeight < 200;
+  }
+
+  const scrollBottom = useCallback(() => {
+    if (!autoScroll.current || rafRef.current) return;
+    rafRef.current = requestAnimationFrame(() => {
+      if (scrollRef.current) scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
+      rafRef.current = null;
+    });
+  }, []);
+
+  useEffect(() => {
+    (async () => {
+      try {
+        const [msgs, kbData] = await Promise.all([getMessages(state.token, chatId), listKnowledgeBases(state.token)]);
+        dispatch({ type: "SET_MESSAGES", chatId, messages: msgs });
+        setKbs(kbData);
+      } catch {}
+    })();
+  }, [chatId, state.token, dispatch]);
+
+  useEffect(scrollBottom, [messages, streamData.text, streamData.thinking, scrollBottom]);
+  useEffect(() => { inputRef.current?.focus(); }, [chatId]);
+
+  async function saveSettings() {
+    try {
+      await updateChat(state.token, chatId, { model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId || "" });
+      dispatch({ type: "UPDATE_CHAT", chat: { id: chatId, model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId } });
+    } catch {}
+  }
+
+  function toggleSettings() {
+    if (showSettings) saveSettings();
+    setShowSettings(!showSettings);
+  }
+
+  function handleFileSelect(e) {
+    const files = Array.from(e.target.files || []);
+    setPendingFiles((prev) => [...prev, ...files.map((f) => ({ file: f, type: classifyFile(f), preview: classifyFile(f) === "image" ? URL.createObjectURL(f) : null }))]);
+    e.target.value = "";
+  }
+
+  function removePending(i) {
+    setPendingFiles((prev) => { if (prev[i]?.preview) URL.revokeObjectURL(prev[i].preview); return prev.filter((_, j) => j !== i); });
+  }
+
+  async function handleSend() {
+    const content = input.trim();
+    if ((!content && !pendingFiles.length) || isStreamingGlobal) return;
+    const text = content || "Please analyze the attached file(s).";
+
+    let attIds = [], uploaded = [];
+    if (pendingFiles.length) {
+      setUploading(true);
+      try {
+        const res = await uploadAttachments(state.token, chatId, pendingFiles.map((p) => p.file));
+        uploaded = (res.attachments || []).filter((a) => !a.error);
+        attIds = uploaded.map((a) => a.id);
+      } catch (err) { console.error(err); setUploading(false); return; }
+      setUploading(false);
+    }
+
+    dispatch({ type: "ADD_MESSAGE", chatId, message: { id: `tmp-${Date.now()}`, role: "user", content: text, created_at: new Date().toISOString(), attachments: uploaded } });
+    setInput("");
+    pendingFiles.forEach((p) => { if (p.preview) URL.revokeObjectURL(p.preview); });
+    setPendingFiles([]);
+    autoScroll.current = true;
+
+    dispatch({ type: "UPDATE_CHAT", chat: { id: chatId, model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId } });
+    streamManager.startStream({ token: state.token, chatId, body: { content: text, model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId, attachment_ids: attIds } });
+  }
+
+  function handleKeyDown(e) { if (e.key === "Enter" && !e.shiftKey) { e.preventDefault(); handleSend(); } }
+
+  function handlePaste(e) {
+    const imgs = Array.from(e.clipboardData?.items || []).filter((i) => i.type.startsWith("image/"));
+    if (!imgs.length) return;
+    e.preventDefault();
+    setPendingFiles((prev) => [...prev, ...imgs.map((i) => { const f = i.getAsFile(); return { file: f, type: "image", preview: URL.createObjectURL(f) }; })]);
+  }
+
+  function handleDrop(e) {
+    e.preventDefault();
+    const files = Array.from(e.dataTransfer?.files || []);
+    if (files.length) setPendingFiles((prev) => [...prev, ...files.map((f) => ({ file: f, type: classifyFile(f), preview: classifyFile(f) === "image" ? URL.createObjectURL(f) : null }))]);
+  }
+
+  const streaming = streamData.streaming;
+
+  return (
+    <div className="flex-1 flex flex-col min-h-0" onDrop={handleDrop} onDragOver={(e) => e.preventDefault()}>
+      <div ref={scrollRef} onScroll={onScroll} className="flex-1 overflow-y-auto px-4 py-4 space-y-4">
+        {messages.map((m) => <MessageBubble key={m.id} message={m} token={state.token} />)}
+        {streaming && (streamData.thinking || streamData.text) && (
+          <MessageBubble message={{ id: "streaming", role: "assistant", content: streamData.text, thinking_content: streamData.thinking || null, attachments: [] }} isStreaming isThinking={streamData.isThinking} token={state.token} />
+        )}
+        {streaming && !streamData.text && !streamData.thinking && (
+          <div className="flex items-center gap-2 px-4 py-3 animate-fade-in">
+            <div className="flex gap-1">
+              <span className="w-2 h-2 bg-anton-accent rounded-full animate-bounce" style={{ animationDelay: "0ms" }} />
+              <span className="w-2 h-2 bg-anton-accent rounded-full animate-bounce" style={{ animationDelay: "150ms" }} />
+              <span className="w-2 h-2 bg-anton-accent rounded-full animate-bounce" style={{ animationDelay: "300ms" }} />
+            </div>
+            <span className="text-anton-muted text-sm">Son of Anton is thinking…</span>
+          </div>
+        )}
+      </div>
+
+      <div className="border-t border-anton-border bg-anton-surface p-4">
+        {showSettings && (
+          <div className="mb-3 bg-anton-card border border-anton-border rounded-xl p-4 space-y-4 animate-fade-in">
+            <div className="flex items-center justify-between">
+              <h3 className="text-sm font-semibold text-white flex items-center gap-1.5"><Settings2 size={14} className="text-anton-accent" /> Settings</h3>
+              <button onClick={toggleSettings} className="text-anton-muted hover:text-white"><X size={14} /></button>
+            </div>
+            <div>
+              <label className="text-xs text-anton-muted mb-1 block">Model</label>
+              <select value={model} onChange={(e) => setModel(e.target.value)} className="w-full bg-anton-bg border border-anton-border rounded-lg px-3 py-2 text-white text-sm focus:outline-none focus:border-anton-accent">
+                {MODELS.map((m) => <option key={m.id} value={m.id}>{m.label}</option>)}
+              </select>
+            </div>
+            <div>
+              <div className="flex justify-between text-xs mb-1"><span className="text-anton-muted">Max Tokens</span><span className="text-anton-accent font-mono">{maxTokens.toLocaleString()}</span></div>
+              <input type="range" min={256} max={65536} step={256} value={maxTokens} onChange={(e) => setMaxTokens(Number(e.target.value))} />
+            </div>
+            <div>
+              <div className="flex justify-between text-xs mb-1"><span className="text-anton-muted flex items-center gap-1"><Brain size={12} className="text-purple-400" /> Reasoning</span><span className="text-purple-400 font-mono">{reasoningBudget === 0 ? "Off" : reasoningBudget.toLocaleString()}</span></div>
+              <input type="range" min={0} max={32000} step={500} value={reasoningBudget} onChange={(e) => setReasoningBudget(Number(e.target.value))} />
+            </div>
+            <div>
+              <label className="text-xs text-anton-muted mb-1 flex items-center gap-1"><BookOpen size={12} /> Knowledge Base</label>
+              <select value={selectedKbId || ""} onChange={(e) => setSelectedKbId(e.target.value || null)} className="w-full bg-anton-bg border border-anton-border rounded-lg px-3 py-2 text-white text-sm focus:outline-none focus:border-anton-accent">
+                <option value="">None</option>
+                {kbs.map((kb) => <option key={kb.id} value={kb.id}>{kb.name} ({kb.document_count} docs)</option>)}
+              </select>
+            </div>
+          </div>
+        )}
+
+        {pendingFiles.length > 0 && (
+          <div className="mb-3 flex flex-wrap gap-2 animate-fade-in">
+            {pendingFiles.map((pf, i) => (
+              <div key={i} className="relative group bg-anton-card border border-anton-border rounded-lg overflow-hidden">
+                {pf.type === "image" && pf.preview ? (
+                  <img src={pf.preview} alt="" className="w-16 h-16 object-cover" />
+                ) : (
+                  <div className="w-16 h-16 flex flex-col items-center justify-center px-1">
+                    <FileText size={20} className="text-anton-muted mb-1" />
+                    <span className="text-[9px] text-anton-muted text-center truncate w-full">{pf.file.name.slice(0, 10)}</span>
+                  </div>
+                )}
+                <button onClick={() => removePending(i)} className="absolute -top-1 -right-1 w-5 h-5 bg-anton-danger rounded-full flex items-center justify-center text-white opacity-0 group-hover:opacity-100 transition-opacity"><X size={10} /></button>
+                <div className="absolute bottom-0 left-0 right-0 bg-black/60 text-[8px] text-white text-center py-0.5">{(pf.file.size / 1024).toFixed(0)}KB</div>
+              </div>
+            ))}
+          </div>
+        )}
+
+        <div className="flex items-end gap-2">
+          <button onClick={toggleSettings} className={`p-2.5 rounded-xl transition shrink-0 ${showSettings ? "bg-anton-accent/20 text-anton-accent" : "text-anton-muted hover:text-white hover:bg-anton-card"}`}><Settings2 size={18} /></button>
+          <button onClick={() => fileRef.current?.click()} className={`p-2.5 rounded-xl transition shrink-0 ${pendingFiles.length ? "bg-green-500/20 text-green-400" : "text-anton-muted hover:text-white hover:bg-anton-card"}`} title="Attach files"><Paperclip size={18} /></button>
+          <input ref={fileRef} type="file" multiple className="hidden" accept="image/*,video/*,.pdf,.txt,.md,.py,.js,.ts,.jsx,.tsx,.cs,.java,.cpp,.c,.h,.go,.rs,.rb,.php,.html,.css,.json,.yaml,.yml,.xml,.toml,.csv,.sql,.sh,.swift,.kt,.lua,.dart,.vue,.svelte,.log" onChange={handleFileSelect} />
+          <div className="flex-1 relative">
+            <textarea ref={inputRef} value={input} onChange={(e) => setInput(e.target.value)} onKeyDown={handleKeyDown} onPaste={handlePaste}
+              placeholder={pendingFiles.length ? "Add a message or send to analyze files…" : "Ask Son of Anton anything…"}
+              rows={1} style={{ maxHeight: "200px" }}
+              className="w-full bg-anton-card border border-anton-border rounded-xl px-4 py-3 text-white text-sm resize-none focus:outline-none focus:border-anton-accent transition"
+              onInput={(e) => { e.target.style.height = "auto"; e.target.style.height = Math.min(e.target.scrollHeight, 200) + "px"; }} />
+          </div>
+          {streaming ? (
+            <button onClick={() => streamManager.abortStream(chatId)} className="p-2.5 rounded-xl bg-anton-danger text-white hover:opacity-80 transition shrink-0"><Square size={18} /></button>
+          ) : (
+            <button onClick={handleSend} disabled={(!input.trim() && !pendingFiles.length) || isStreamingGlobal || uploading}
+              className="p-2.5 rounded-xl bg-anton-accent text-white hover:opacity-80 transition shrink-0 disabled:opacity-30 disabled:cursor-not-allowed">
+              {uploading ? <Loader2 size={18} className="animate-spin" /> : <Send size={18} />}
+            </button>
+          )}
+        </div>
+
+        <div className="flex items-center gap-3 mt-2 text-[11px] text-anton-muted">
+          <span>{MODELS.find((m) => m.id === model)?.label}</span>
+          <span>•</span><span>{maxTokens.toLocaleString()} tokens</span>
+          {reasoningBudget > 0 && <><span>•</span><span className="text-purple-400">🧠 {reasoningBudget.toLocaleString()}</span></>}
+          {selectedKbId && <><span>•</span><span className="text-green-400">📚 RAG</span></>}
+          {pendingFiles.length > 0 && <><span>•</span><span className="text-blue-400">📎 {pendingFiles.length} file{pendingFiles.length !== 1 ? "s" : ""}</span></>}
+          {messages.some((m) => m.role === "assistant") && (
+            <button onClick={async () => { const all = messages.filter((m) => m.role === "assistant").map((m) => m.content).join("\n\n---\n\n"); if (all) try { await downloadZip(state.token, all); } catch {} }}
+              className="ml-auto hover:text-anton-accent transition">⬇ Download code</button>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+ENDOFFILE
+ok "frontend/src/components/ChatView.jsx"
+
+# ────────────────────────────────────────
+# frontend/src/streamManager.js
+# ────────────────────────────────────────
+step "frontend/src/streamManager.js"
+cat > frontend/src/streamManager.js << 'ENDOFFILE'
+import { streamMessage } from "./api";
+
+const _streams = new Map();
+const _listeners = new Map();
+let _dispatch = null;
+
+export function setDispatch(dispatch) { _dispatch = dispatch; }
+
+export function getStreamData(chatId) {
+  const s = _streams.get(chatId);
+  if (!s) return { streaming: false, text: "", thinking: "", isThinking: false };
+  return { streaming: true, text: s.text, thinking: s.thinking, isThinking: s.isThinking };
+}
+
+export function isStreaming(chatId) { return _streams.has(chatId); }
+
+export function subscribe(chatId, cb) {
+  if (!_listeners.has(chatId)) _listeners.set(chatId, new Set());
+  _listeners.get(chatId).add(cb);
+  return () => { const s = _listeners.get(chatId); if (s) { s.delete(cb); if (!s.size) _listeners.delete(chatId); } };
+}
+
+function _notify(id) { const s = _listeners.get(id); if (s) s.forEach((cb) => cb()); }
+
+export function abortStream(chatId) {
+  const s = _streams.get(chatId);
+  if (s) { s.abortController.abort(); _streams.delete(chatId); _notify(chatId); if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: false }); }
+}
+
+export function startStream({ token, chatId, body }) {
+  if (_streams.has(chatId)) return;
+  const ac = new AbortController();
+  _streams.set(chatId, { text: "", thinking: "", isThinking: false, abortController: ac });
+  if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: true });
+  _notify(chatId);
+
+  (async () => {
+    const s = _streams.get(chatId);
+    if (!s) return;
+    let usage = {}, msgId = "";
+    try {
+      for await (const evt of streamMessage(token, chatId, body, ac.signal)) {
+        if (ac.signal.aborted || !_streams.has(chatId)) break;
+        switch (evt.type) {
+          case "thinking_start": s.isThinking = true; _notify(chatId); break;
+          case "thinking_delta": s.thinking += evt.content; _notify(chatId); break;
+          case "thinking_end": s.isThinking = false; _notify(chatId); break;
+          case "text_delta": s.text += evt.content; _notify(chatId); break;
+          case "usage": usage = { input_tokens: evt.input_tokens, output_tokens: evt.output_tokens }; break;
+          case "title_update": if (_dispatch) _dispatch({ type: "UPDATE_CHAT", chat: { id: chatId, title: evt.title } }); break;
+          case "done": msgId = evt.message_id; break;
+          case "error": s.text += `\n\n**Error:** ${evt.message}`; _notify(chatId); break;
+        }
+      }
+      if (!ac.signal.aborted && _dispatch) {
+        _dispatch({ type: "ADD_MESSAGE", chatId, message: {
+          id: msgId || `gen-${Date.now()}`, role: "assistant", content: s.text,
+          thinking_content: s.thinking || null, input_tokens: usage.input_tokens || 0,
+          output_tokens: usage.output_tokens || 0, created_at: new Date().toISOString(), attachments: [],
+        }});
+      }
+    } catch (err) {
+      if (!ac.signal.aborted && _dispatch) {
+        _dispatch({ type: "ADD_MESSAGE", chatId, message: {
+          id: `err-${Date.now()}`, role: "assistant", content: `**Error:** ${err.message}`,
+          created_at: new Date().toISOString(), attachments: [],
+        }});
+      }
+    } finally {
+      _streams.delete(chatId); _notify(chatId);
+      if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: false });
+    }
+  })();
+}
+ENDOFFILE
+ok "frontend/src/streamManager.js"
+
+# ────────────────────────────────────────
+# Done
+# ────────────────────────────────────────
+echo ""
+echo -e "${GREEN}${BOLD}═══════════════════════════════════════════════════${NC}"
+echo -e "${GREEN}${BOLD}  All 12 files written successfully!${NC}"
+echo -e "${GREEN}${BOLD}═══════════════════════════════════════════════════${NC}"
+echo ""
+echo -e "  Now run: ${CYAN}zsh fix-and-deploy.sh${NC}"
+echo ""
\ No newline at end of file

backend/config.py

@@ -23,10 +23,15 @@ DATABASE_URL: str = os.getenv("DATABASE_URL", "sqlite:////data/sonofanton.db")
 
 CHROMADB_PATH: str = os.getenv("CHROMADB_PATH", "/data/chromadb")
 UPLOAD_PATH: str = os.getenv("UPLOAD_PATH", "/data/uploads")
+ATTACHMENT_PATH: str = os.getenv("ATTACHMENT_PATH", "/data/uploads/chat_attachments")
 
 DEFAULT_QUOTA: int = int(os.getenv("DEFAULT_QUOTA", "2000000"))
 MAX_UPLOAD_BYTES: int = int(os.getenv("MAX_UPLOAD_MB", "50")) * 1024 * 1024
+MAX_ATTACHMENT_BYTES: int = int(os.getenv("MAX_ATTACHMENT_MB", "25")) * 1024 * 1024
+
+MAX_IMAGE_DIMENSION: int = 1568
+MAX_VIDEO_FRAMES: int = 6
 
 BEDROCK_ENDPOINT: str = (
     f"https://bedrock-runtime.{AWS_REGION}.amazonaws.com"
-)
+)
\ No newline at end of file

backend/main.py

@@ -18,37 +18,44 @@ from backend.routes.chat_routes import router as chat_router
 from backend.routes.admin_routes import router as admin_router
 from backend.routes.knowledge_routes import router as knowledge_router
 from backend.routes.files_routes import router as files_router
+from backend.routes.attachment_routes import router as attachment_router
 from backend.services.bedrock_service import close_http_client
 
 
 def _run_migrations():
-    """Add new columns to existing tables if they're missing (lightweight migration)."""
+    """Add new columns/tables to existing DB if they're missing."""
     from sqlalchemy import inspect, text
     try:
         inspector = inspect(engine)
-        if "chats" in inspector.get_table_names():
+        existing_tables = inspector.get_table_names()
+
+        if "chats" in existing_tables:
             columns = {c["name"] for c in inspector.get_columns("chats")}
             with engine.connect() as conn:
                 if "max_tokens" not in columns:
                     conn.execute(text("ALTER TABLE chats ADD COLUMN max_tokens INTEGER DEFAULT 4096"))
-                    print("  ✅ Added chats.max_tokens column")
+                    print("  Added chats.max_tokens column")
                 if "reasoning_budget" not in columns:
                     conn.execute(text("ALTER TABLE chats ADD COLUMN reasoning_budget INTEGER DEFAULT 0"))
-                    print("  ✅ Added chats.reasoning_budget column")
+                    print("  Added chats.reasoning_budget column")
                 conn.commit()
+
+        if "chat_attachments" not in existing_tables:
+            from backend.models import ChatAttachment
+            ChatAttachment.__table__.create(bind=engine, checkfirst=True)
+            print("  Created chat_attachments table")
+
     except Exception as e:
-        print(f"  ⚠️  Migration note: {e}")
+        print(f"  Migration note: {e}")
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    # --- Startup ---
     Base.metadata.create_all(bind=engine)
     _run_migrations()
     seed_superadmin()
-    print("🔥 Son of Anton is online.")
+    print("Son of Anton is online.")
     yield
-    # --- Shutdown ---
     await close_http_client()
     print("Son of Anton shutting down.")
 
@@ -56,7 +63,7 @@ async def lifespan(app: FastAPI):
 app = FastAPI(
     title="Son of Anton",
     description="Avatar of All Elements of Code",
-    version="1.0.0",
+    version="2.0.0",
     lifespan=lifespan,
 )
 
@@ -68,14 +75,13 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-# ── API Routes ────────────────────────────────────
 app.include_router(auth_router, prefix="/api/auth", tags=["Auth"])
 app.include_router(chat_router, prefix="/api/chats", tags=["Chats"])
 app.include_router(admin_router, prefix="/api/admin", tags=["Admin"])
 app.include_router(knowledge_router, prefix="/api/knowledge", tags=["Knowledge"])
 app.include_router(files_router, prefix="/api/files", tags=["Files"])
+app.include_router(attachment_router, prefix="/api", tags=["Attachments"])
 
-# ── Serve Frontend ────────────────────────────────
 FRONTEND_DIR = Path(__file__).parent.parent / "frontend" / "dist"
 
 if (FRONTEND_DIR / "assets").exists():
@@ -96,4 +102,4 @@ async def serve_frontend(full_path: str):
     index = FRONTEND_DIR / "index.html"
     if index.is_file():
         return FileResponse(str(index))
-    return {"message": "Son of Anton API is running. Frontend not built."}
+    return {"message": "Son of Anton API is running. Frontend not built."}
\ No newline at end of file

backend/models.py

@@ -59,6 +59,10 @@ class Chat(Base):
         "Message", back_populates="chat",
         cascade="all,delete-orphan", order_by="Message.created_at",
     )
+    attachments = relationship(
+        "ChatAttachment", back_populates="chat",
+        cascade="all,delete-orphan",
+    )
 
 
 class Message(Base):
@@ -74,6 +78,26 @@ class Message(Base):
     created_at = Column(DateTime, default=datetime.utcnow)
 
     chat = relationship("Chat", back_populates="messages")
+    attachments = relationship("ChatAttachment", back_populates="message")
+
+
+class ChatAttachment(Base):
+    __tablename__ = "chat_attachments"
+
+    id = Column(String(36), primary_key=True, default=new_id)
+    chat_id = Column(String(36), ForeignKey("chats.id", ondelete="CASCADE"), nullable=False)
+    message_id = Column(String(36), ForeignKey("messages.id", ondelete="SET NULL"), nullable=True)
+    filename = Column(String(200), nullable=False)
+    original_filename = Column(String(200), nullable=False)
+    mime_type = Column(String(100), nullable=False)
+    file_type = Column(String(20), nullable=False)
+    file_size = Column(Integer, default=0)
+    storage_path = Column(String(500), nullable=False)
+    text_extract = Column(Text, nullable=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    chat = relationship("Chat", back_populates="attachments")
+    message = relationship("Message", back_populates="attachments")
 
 
 class KnowledgeBase(Base):
@@ -99,4 +123,4 @@ class KnowledgeDocument(Base):
     filename = Column(String(200), nullable=False)
     file_size = Column(Integer, default=0)
     chunk_count = Column(Integer, default=0)
-    created_at = Column(DateTime, default=datetime.utcnow)
+    created_at = Column(DateTime, default=datetime.utcnow)
\ No newline at end of file

backend/routes/attachment_routes.py

@@ -3,19 +3,37 @@ Chat attachment upload, serve, and delete routes.
 """
 
 import os
-from fastapi import APIRouter, Depends, HTTPException, UploadFile, File
+from typing import Optional
+
+from fastapi import APIRouter, Depends, HTTPException, UploadFile, File, Query, Request
 from fastapi.responses import FileResponse
 from sqlalchemy.orm import Session
 
 from backend.database import get_db
 from backend.models import User, Chat, ChatAttachment
-from backend.auth import get_current_user
+from backend.auth import get_current_user, decode_token
 from backend.services import attachment_service
 from backend.config import MAX_ATTACHMENT_BYTES
 
 router = APIRouter()
 
 
+def _get_user_flexible(request: Request, db: Session, token_param: Optional[str] = None) -> User:
+    raw_token = None
+    auth_header = request.headers.get("authorization", "")
+    if auth_header.startswith("Bearer "):
+        raw_token = auth_header[7:]
+    if not raw_token and token_param:
+        raw_token = token_param
+    if not raw_token:
+        raise HTTPException(401, "Authentication required")
+    payload = decode_token(raw_token)
+    user = db.query(User).filter(User.id == payload["sub"]).first()
+    if not user or not user.is_active:
+        raise HTTPException(401, "User not found or inactive")
+    return user
+
+
 @router.post("/chats/{chat_id}/attachments")
 async def upload_attachments(
     chat_id: str,
@@ -23,7 +41,6 @@ async def upload_attachments(
     user: User = Depends(get_current_user),
     db: Session = Depends(get_db),
 ):
-    """Upload one or more files as chat attachments. Returns attachment metadata."""
     chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
     if not chat:
         raise HTTPException(404, "Chat not found")
@@ -34,21 +51,16 @@ async def upload_attachments(
         try:
             content = await file.read()
             if len(content) > MAX_ATTACHMENT_BYTES:
-                results.append({
-                    "error": f"File too large: {filename} ({len(content) // 1024 // 1024}MB). Max {MAX_ATTACHMENT_BYTES // 1024 // 1024}MB.",
-                })
+                results.append({"error": f"Too large: {filename}"})
                 continue
 
             meta = attachment_service.save_attachment(
-                chat_id=chat_id,
-                filename=filename,
-                content=content,
-                content_type=file.content_type,
+                chat_id=chat_id, filename=filename,
+                content=content, content_type=file.content_type,
             )
 
             att = ChatAttachment(
-                id=meta["id"],
-                chat_id=chat_id,
+                id=meta["id"], chat_id=chat_id,
                 filename=meta["filename"],
                 original_filename=meta["original_filename"],
                 mime_type=meta["mime_type"],
@@ -60,11 +72,9 @@ async def upload_attachments(
             db.add(att)
             db.commit()
             db.refresh(att)
-
             results.append(_att_dict(att))
-
         except Exception as e:
-            results.append({"error": f"Failed to upload {filename}: {str(e)}"})
+            results.append({"error": f"Failed: {filename}: {str(e)}"})
 
     return {"attachments": results}
 
@@ -72,26 +82,20 @@ async def upload_attachments(
 @router.get("/attachments/{attachment_id}/file")
 def serve_attachment(
     attachment_id: str,
-    user: User = Depends(get_current_user),
+    request: Request,
+    token: Optional[str] = Query(None),
     db: Session = Depends(get_db),
 ):
-    """Serve an attachment file. Validates user owns the chat."""
+    user = _get_user_flexible(request, db, token)
     att = db.query(ChatAttachment).filter(ChatAttachment.id == attachment_id).first()
     if not att:
         raise HTTPException(404, "Attachment not found")
-
     chat = db.query(Chat).filter(Chat.id == att.chat_id).first()
     if not chat or (chat.user_id != user.id and user.role != "superadmin"):
         raise HTTPException(403, "Access denied")
-
     if not os.path.exists(att.storage_path):
         raise HTTPException(404, "File not found on disk")
-
-    return FileResponse(
-        att.storage_path,
-        media_type=att.mime_type,
-        filename=att.original_filename,
-    )
+    return FileResponse(att.storage_path, media_type=att.mime_type, filename=att.original_filename)
 
 
 @router.delete("/attachments/{attachment_id}")
@@ -100,30 +104,22 @@ def delete_attachment(
     user: User = Depends(get_current_user),
     db: Session = Depends(get_db),
 ):
-    """Delete a single attachment."""
     att = db.query(ChatAttachment).filter(ChatAttachment.id == attachment_id).first()
     if not att:
         raise HTTPException(404)
-
     chat = db.query(Chat).filter(Chat.id == att.chat_id).first()
     if not chat or (chat.user_id != user.id and user.role != "superadmin"):
         raise HTTPException(403)
-
     attachment_service.delete_attachment_file(att.storage_path)
     db.delete(att)
     db.commit()
     return {"ok": True}
 
 
-def _att_dict(att: ChatAttachment) -> dict:
+def _att_dict(att):
     return {
-        "id": att.id,
-        "chat_id": att.chat_id,
-        "message_id": att.message_id,
-        "filename": att.filename,
-        "original_filename": att.original_filename,
-        "mime_type": att.mime_type,
-        "file_type": att.file_type,
-        "file_size": att.file_size,
-        "created_at": str(att.created_at),
-    }
+        "id": att.id, "chat_id": att.chat_id, "message_id": att.message_id,
+        "filename": att.filename, "original_filename": att.original_filename,
+        "mime_type": att.mime_type, "file_type": att.file_type,
+        "file_size": att.file_size, "created_at": str(att.created_at),
+    }
\ No newline at end of file

backend/routes/chat_routes.py

 """
-Chat CRUD and message streaming.
+Chat CRUD and message streaming with multimodal attachment support.
 """
 
 import json
@@ -12,10 +12,10 @@ from fastapi.responses import StreamingResponse
 from sqlalchemy.orm import Session
 
 from backend.database import get_db, SessionLocal
-from backend.models import User, Chat, Message
+from backend.models import User, Chat, Message, ChatAttachment
 from backend.auth import get_current_user
 from backend.system_prompt import build_full_prompt
-from backend.services import bedrock_service, memory_service, rag_service
+from backend.services import bedrock_service, memory_service, rag_service, attachment_service
 
 router = APIRouter()
 
@@ -42,30 +42,21 @@ class SendMessageBody(BaseModel):
     max_tokens: int = 4096
     reasoning_budget: int = 0
     knowledge_base_id: Optional[str] = None
+    attachment_ids: list[str] = []
 
 
-# ── Chat CRUD ─────────────────────────────────────
-
 @router.get("")
 def list_chats(user: User = Depends(get_current_user), db: Session = Depends(get_db)):
-    chats = (
-        db.query(Chat)
-        .filter(Chat.user_id == user.id)
-        .order_by(Chat.updated_at.desc())
-        .all()
-    )
+    chats = db.query(Chat).filter(Chat.user_id == user.id).order_by(Chat.updated_at.desc()).all()
     return [_chat_dict(c) for c in chats]
 
 
 @router.post("")
 def create_chat(body: CreateChatBody, user: User = Depends(get_current_user), db: Session = Depends(get_db)):
     chat = Chat(
-        user_id=user.id,
-        title=body.title,
-        model=body.model,
+        user_id=user.id, title=body.title, model=body.model,
         knowledge_base_id=body.knowledge_base_id or None,
-        max_tokens=body.max_tokens,
-        reasoning_budget=body.reasoning_budget,
+        max_tokens=body.max_tokens, reasoning_budget=body.reasoning_budget,
     )
     db.add(chat)
     db.commit()
@@ -95,7 +86,6 @@ def update_chat(chat_id: str, body: UpdateChatBody, user: User = Depends(get_cur
     if body.reasoning_budget is not None:
         chat.reasoning_budget = body.reasoning_budget
     if body.knowledge_base_id is not None:
-        # Empty string means "clear the KB"
         chat.knowledge_base_id = body.knowledge_base_id or None
     db.commit()
     return _chat_dict(chat)
@@ -106,6 +96,7 @@ def delete_chat(chat_id: str, user: User = Depends(get_current_user), db: Sessio
     chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
     if not chat:
         raise HTTPException(404)
+    attachment_service.delete_chat_attachments(chat_id)
     db.delete(chat)
     db.commit()
     return {"ok": True}
@@ -116,17 +107,17 @@ def get_messages(chat_id: str, user: User = Depends(get_current_user), db: Sessi
     chat = db.query(Chat).filter(Chat.id == chat_id, Chat.user_id == user.id).first()
     if not chat:
         raise HTTPException(404)
-    return [_msg_dict(m) for m in chat.messages]
-
+    msgs = []
+    for m in chat.messages:
+        d = _msg_dict(m)
+        atts = db.query(ChatAttachment).filter(ChatAttachment.message_id == m.id).all()
+        d["attachments"] = [_att_brief(a) for a in atts]
+        msgs.append(d)
+    return msgs
 
-# ── Send Message (Streaming) ─────────────────────
 
 @router.post("/{chat_id}/messages")
-async def send_message(
-    chat_id: str,
-    body: SendMessageBody,
-    user: User = Depends(get_current_user),
-):
+async def send_message(chat_id: str, body: SendMessageBody, user: User = Depends(get_current_user)):
     user_id = user.id
 
     async def generate():
@@ -139,7 +130,6 @@ async def send_message(
 
             db_user = db.query(User).filter(User.id == user_id).first()
 
-            # Quota check
             now = datetime.utcnow()
             if db_user.quota_reset_date and now >= db_user.quota_reset_date:
                 db_user.tokens_used_this_month = 0
@@ -150,15 +140,33 @@ async def send_message(
                 db.commit()
 
             if db_user.tokens_used_this_month >= db_user.quota_tokens_monthly:
-                yield _sse({"type": "error", "message": "Monthly token quota exceeded. Contact your admin."})
+                yield _sse({"type": "error", "message": "Monthly token quota exceeded."})
                 return
 
-            # Save user message
-            user_msg = Message(chat_id=chat_id, role="user", content=body.content)
+            attachments = []
+            if body.attachment_ids:
+                attachments = (
+                    db.query(ChatAttachment)
+                    .filter(ChatAttachment.id.in_(body.attachment_ids), ChatAttachment.chat_id == chat_id)
+                    .all()
+                )
+
+            stored_content = body.content
+            if attachments:
+                labels = {"image": "Image", "video": "Video", "document": "Document", "text": "File"}
+                notes = [f"[{labels.get(a.file_type, 'File')}: {a.original_filename}]" for a in attachments]
+                stored_content = "\n".join(notes) + "\n" + body.content
+
+            user_msg = Message(chat_id=chat_id, role="user", content=stored_content)
             db.add(user_msg)
             db.commit()
+            db.refresh(user_msg)
+
+            for att in attachments:
+                att.message_id = user_msg.id
+            if attachments:
+                db.commit()
 
-            # Build context
             kb_id = body.knowledge_base_id or chat.knowledge_base_id
             rag_context = None
             if kb_id:
@@ -170,14 +178,16 @@ async def send_message(
             system_prompt = build_full_prompt(rag_context)
             messages = memory_service.build_messages(chat, db)
 
+            if attachments and messages and messages[-1]["role"] == "user":
+                content_blocks = attachment_service.build_claude_content_blocks(attachments)
+                content_blocks.append({"type": "text", "text": body.content})
+                messages[-1]["content"] = content_blocks
+
             model_id = body.model or chat.model
             max_tokens = body.max_tokens
             thinking_config = None
             if body.reasoning_budget > 0:
-                thinking_config = {
-                    "enabled": True,
-                    "budget_tokens": body.reasoning_budget,
-                }
+                thinking_config = {"enabled": True, "budget_tokens": body.reasoning_budget}
                 max_tokens = max_tokens + body.reasoning_budget
 
             full_text = ""
@@ -187,10 +197,8 @@ async def send_message(
             current_block_type = "text"
 
             async for event in bedrock_service.stream_response(
-                messages=messages,
-                system_prompt=system_prompt,
-                model_id=model_id,
-                max_tokens=min(max_tokens, 65536),
+                messages=messages, system_prompt=system_prompt,
+                model_id=model_id, max_tokens=min(max_tokens, 65536),
                 thinking_config=thinking_config,
             ):
                 evt_type = event.get("type", "")
@@ -198,13 +206,11 @@ async def send_message(
                 if evt_type == "message_start":
                     usage = event.get("message", {}).get("usage", {})
                     input_tokens = usage.get("input_tokens", 0)
-
                 elif evt_type == "content_block_start":
                     blk = event.get("content_block", {})
                     current_block_type = blk.get("type", "text")
                     if current_block_type == "thinking":
                         yield _sse({"type": "thinking_start"})
-
                 elif evt_type == "content_block_delta":
                     delta = event.get("delta", {})
                     dt = delta.get("type", "")
@@ -216,29 +222,20 @@ async def send_message(
                         t = delta.get("text", "")
                         full_text += t
                         yield _sse({"type": "text_delta", "content": t})
-
                 elif evt_type == "content_block_stop":
                     if current_block_type == "thinking":
                         yield _sse({"type": "thinking_end"})
-
                 elif evt_type == "message_delta":
                     usage = event.get("usage", {})
                     output_tokens = usage.get("output_tokens", 0)
 
-            # Save assistant message
             assistant_msg = Message(
-                chat_id=chat_id,
-                role="assistant",
-                content=full_text,
+                chat_id=chat_id, role="assistant", content=full_text,
                 thinking_content=full_thinking or None,
-                input_tokens=input_tokens,
-                output_tokens=output_tokens,
+                input_tokens=input_tokens, output_tokens=output_tokens,
             )
             db.add(assistant_msg)
-
             db_user.tokens_used_this_month += input_tokens + output_tokens
-
-            # Persist the generation settings used for this message onto the chat
             chat.model = model_id
             chat.max_tokens = body.max_tokens
             chat.reasoning_budget = body.reasoning_budget
@@ -246,7 +243,6 @@ async def send_message(
             chat.updated_at = datetime.utcnow()
             db.commit()
 
-            # Auto title
             msg_count = db.query(Message).filter(Message.chat_id == chat_id).count()
             if msg_count <= 2 and chat.title == "New Chat":
                 try:
@@ -268,7 +264,7 @@ async def send_message(
     return StreamingResponse(generate(), media_type="text/event-stream")
 
 
-async def _generate_title(user_msg: str, ai_msg: str) -> str:
+async def _generate_title(user_msg, ai_msg):
     from backend.config import FAST_MODEL
     result = await bedrock_service.invoke_model_simple(
         model_id=FAST_MODEL,
@@ -278,30 +274,32 @@ async def _generate_title(user_msg: str, ai_msg: str) -> str:
     return result.strip().strip('"').strip("'")
 
 
-def _sse(data: dict) -> str:
+def _sse(data):
     return f"data: {json.dumps(data)}\n\n"
 
 
-def _chat_dict(c: Chat) -> dict:
+def _chat_dict(c):
     return {
-        "id": c.id,
-        "title": c.title,
-        "model": c.model,
+        "id": c.id, "title": c.title, "model": c.model,
         "knowledge_base_id": c.knowledge_base_id,
         "max_tokens": c.max_tokens or 4096,
         "reasoning_budget": c.reasoning_budget or 0,
-        "created_at": str(c.created_at),
-        "updated_at": str(c.updated_at),
+        "created_at": str(c.created_at), "updated_at": str(c.updated_at),
     }
 
 
-def _msg_dict(m: Message) -> dict:
+def _msg_dict(m):
     return {
-        "id": m.id,
-        "role": m.role,
-        "content": m.content,
+        "id": m.id, "role": m.role, "content": m.content,
         "thinking_content": m.thinking_content,
-        "input_tokens": m.input_tokens,
-        "output_tokens": m.output_tokens,
+        "input_tokens": m.input_tokens, "output_tokens": m.output_tokens,
         "created_at": str(m.created_at),
-    }
+    }
\ No newline at end of file
+
+
+def _att_brief(a):
+    return {
+        "id": a.id, "original_filename": a.original_filename,
+        "mime_type": a.mime_type, "file_type": a.file_type,
+        "file_size": a.file_size,
+    }

backend/services/attachment_service.py

 """
 Attachment processing service.
-Handles images (resize + base64 for Claude vision),
-videos (frame extraction via ffmpeg),
-PDFs (native document support),
-and text files (read content).
+Handles images, videos (frame extraction), PDFs, and text files.
 """
 
 import os
@@ -21,8 +18,6 @@ from backend import config
 
 os.makedirs(config.ATTACHMENT_PATH, exist_ok=True)
 
-# ── File type detection ──────────────────────────────
-
 IMAGE_EXTENSIONS = {".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp", ".tiff"}
 VIDEO_EXTENSIONS = {".mp4", ".mov", ".avi", ".mkv", ".webm", ".flv", ".wmv", ".m4v"}
 PDF_EXTENSIONS = {".pdf"}
@@ -32,15 +27,13 @@ TEXT_EXTENSIONS = {
     ".kt", ".lua", ".gd", ".html", ".css", ".scss", ".json", ".yaml",
     ".yml", ".xml", ".toml", ".ini", ".cfg", ".conf", ".sh", ".bash",
     ".sql", ".r", ".dart", ".vue", ".svelte", ".csv", ".log", ".env",
-    ".gitignore", ".dockerfile", ".makefile",
 }
 
 IMAGE_MIMES = {"image/jpeg", "image/png", "image/gif", "image/webp"}
-VIDEO_MIMES = {"video/mp4", "video/quicktime", "video/x-msvideo", "video/webm", "video/x-matroska"}
+VIDEO_MIMES = {"video/mp4", "video/quicktime", "video/x-msvideo", "video/webm"}
 
 
-def classify_file(filename: str, mime: str) -> str:
-    """Classify file into: image, video, document, text"""
+def classify_file(filename, mime):
     ext = Path(filename).suffix.lower()
     if ext in IMAGE_EXTENSIONS or mime in IMAGE_MIMES:
         return "image"
@@ -51,29 +44,21 @@ def classify_file(filename: str, mime: str) -> str:
     return "text"
 
 
-def get_mime_type(filename: str, content_type: Optional[str] = None) -> str:
-    """Determine MIME type."""
+def get_mime_type(filename, content_type=None):
     if content_type and content_type != "application/octet-stream":
         return content_type
     mime, _ = mimetypes.guess_type(filename)
     return mime or "application/octet-stream"
 
 
-# ── File storage ─────────────────────────────────────
-
-def save_attachment(chat_id: str, filename: str, content: bytes, content_type: Optional[str] = None) -> dict:
-    """
-    Save an uploaded file to disk. Returns metadata dict.
-    """
+def save_attachment(chat_id, filename, content, content_type=None):
     mime = get_mime_type(filename, content_type)
     file_type = classify_file(filename, mime)
     attachment_id = str(uuid4())
 
-    # Create chat-specific directory
     chat_dir = os.path.join(config.ATTACHMENT_PATH, chat_id)
     os.makedirs(chat_dir, exist_ok=True)
 
-    # Sanitize filename
     safe_name = Path(filename).name.replace(" ", "_")
     stored_name = f"{attachment_id}_{safe_name}"
     storage_path = os.path.join(chat_dir, stored_name)
@@ -81,10 +66,9 @@ def save_attachment(chat_id: str, filename: str, content: bytes, content_type: O
     with open(storage_path, "wb") as f:
         f.write(content)
 
-    # Extract text for text-based files
     text_extract = None
     if file_type == "text":
-        text_extract = _extract_text_content(storage_path, filename)
+        text_extract = _extract_text_content(storage_path)
     elif file_type == "document":
         text_extract = _extract_pdf_text(storage_path)
 
@@ -100,8 +84,7 @@ def save_attachment(chat_id: str, filename: str, content: bytes, content_type: O
     }
 
 
-def delete_attachment_file(storage_path: str):
-    """Delete an attachment file from disk."""
+def delete_attachment_file(storage_path):
     try:
         if os.path.exists(storage_path):
             os.remove(storage_path)
@@ -109,28 +92,21 @@ def delete_attachment_file(storage_path: str):
         pass
 
 
-def delete_chat_attachments(chat_id: str):
-    """Delete all attachment files for a chat."""
+def delete_chat_attachments(chat_id):
     chat_dir = os.path.join(config.ATTACHMENT_PATH, chat_id)
     if os.path.isdir(chat_dir):
         shutil.rmtree(chat_dir, ignore_errors=True)
 
 
-# ── Claude content block builders ────────────────────
-
-def build_claude_content_blocks(attachments: list) -> list[dict]:
-    """
-    Build Anthropic-compatible content blocks for a list of ChatAttachment objects.
-    Returns a list of content block dicts ready for the messages API.
-    """
+def build_claude_content_blocks(attachments):
     blocks = []
     for att in attachments:
         try:
-            file_blocks = _process_single_attachment(att)
-            if isinstance(file_blocks, list):
-                blocks.extend(file_blocks)
-            elif file_blocks:
-                blocks.append(file_blocks)
+            result = _process_single_attachment(att)
+            if isinstance(result, list):
+                blocks.extend(result)
+            elif result:
+                blocks.append(result)
         except Exception as e:
             blocks.append({
                 "type": "text",
@@ -139,8 +115,7 @@ def build_claude_content_blocks(attachments: list) -> list[dict]:
     return blocks
 
 
-def _process_single_attachment(att) -> list[dict] | dict | None:
-    """Process a single attachment into Claude content blocks."""
+def _process_single_attachment(att):
     if att.file_type == "image":
         return _build_image_block(att)
     elif att.file_type == "video":
@@ -152,70 +127,41 @@ def _process_single_attachment(att) -> list[dict] | dict | None:
     return None
 
 
-def _build_image_block(att) -> dict:
-    """Build an image content block. Resizes if needed."""
+def _build_image_block(att):
     data = _read_and_resize_image(att.storage_path, att.mime_type)
-    mime = att.mime_type
-    # Claude only accepts specific image types
-    if mime not in IMAGE_MIMES:
-        mime = "image/jpeg"
+    mime = att.mime_type if att.mime_type in IMAGE_MIMES else "image/jpeg"
     return {
         "type": "image",
-        "source": {
-            "type": "base64",
-            "media_type": mime,
-            "data": data,
-        },
+        "source": {"type": "base64", "media_type": mime, "data": data},
     }
 
 
-def _build_video_blocks(att) -> list[dict]:
-    """Extract frames from video and build image content blocks."""
+def _build_video_blocks(att):
     frames = _extract_video_frames(att.storage_path)
     if not frames:
-        return [{
-            "type": "text",
-            "text": f"[Video: {att.original_filename} — could not extract frames. ffmpeg may not be available.]",
-        }]
-
-    blocks = [{
-        "type": "text",
-        "text": f"[Video: {att.original_filename} — {len(frames)} key frames extracted]",
-    }]
+        return [{"type": "text", "text": f"[Video: {att.original_filename} - could not extract frames]"}]
+    blocks = [{"type": "text", "text": f"[Video: {att.original_filename} - {len(frames)} frames extracted]"}]
     for frame_b64 in frames:
         blocks.append({
             "type": "image",
-            "source": {
-                "type": "base64",
-                "media_type": "image/jpeg",
-                "data": frame_b64,
-            },
+            "source": {"type": "base64", "media_type": "image/jpeg", "data": frame_b64},
         })
     return blocks
 
 
-def _build_document_block(att) -> dict:
-    """Build a document content block for PDFs."""
+def _build_document_block(att):
     if att.mime_type == "application/pdf":
         with open(att.storage_path, "rb") as f:
             data = base64.b64encode(f.read()).decode("utf-8")
         return {
             "type": "document",
-            "source": {
-                "type": "base64",
-                "media_type": "application/pdf",
-                "data": data,
-            },
+            "source": {"type": "base64", "media_type": "application/pdf", "data": data},
         }
-    # Non-PDF documents: fall back to text
     return _build_text_block(att)
 
 
-def _build_text_block(att) -> dict:
-    """Build a text content block from a text-based file."""
-    text = att.text_extract
-    if not text:
-        text = _extract_text_content(att.storage_path, att.original_filename)
+def _build_text_block(att):
+    text = att.text_extract or _extract_text_content(att.storage_path)
     if not text:
         text = f"[Could not extract text from {att.original_filename}]"
     return {
@@ -224,41 +170,28 @@ def _build_text_block(att) -> dict:
     }
 
 
-# ── Image processing ─────────────────────────────────
-
-def _read_and_resize_image(path: str, mime_type: str) -> str:
-    """Read an image, resize if too large, return base64 string."""
+def _read_and_resize_image(path, mime_type):
     try:
         from PIL import Image
-
         img = Image.open(path)
-
-        # Convert to RGB if necessary (handles RGBA, palette, etc.)
         if img.mode in ("RGBA", "LA", "P"):
-            background = Image.new("RGB", img.size, (255, 255, 255))
+            bg = Image.new("RGB", img.size, (255, 255, 255))
             if img.mode == "P":
                 img = img.convert("RGBA")
-            background.paste(img, mask=img.split()[-1] if "A" in img.mode else None)
-            img = background
+            bg.paste(img, mask=img.split()[-1] if "A" in img.mode else None)
+            img = bg
         elif img.mode != "RGB":
             img = img.convert("RGB")
-
-        # Resize if either dimension exceeds max
-        max_dim = config.MAX_IMAGE_DIMENSION
-        if img.width > max_dim or img.height > max_dim:
-            ratio = min(max_dim / img.width, max_dim / img.height)
-            new_size = (int(img.width * ratio), int(img.height * ratio))
-            img = img.resize(new_size, Image.LANCZOS)
-
-        # Encode to JPEG for efficiency
+        mx = config.MAX_IMAGE_DIMENSION
+        if img.width > mx or img.height > mx:
+            ratio = min(mx / img.width, mx / img.height)
+            img = img.resize((int(img.width * ratio), int(img.height * ratio)), Image.LANCZOS)
         buf = io.BytesIO()
         fmt = "PNG" if mime_type == "image/png" else "JPEG"
-        save_kwargs = {"quality": 85} if fmt == "JPEG" else {}
-        img.save(buf, format=fmt, **save_kwargs)
+        kwargs = {"quality": 85} if fmt == "JPEG" else {}
+        img.save(buf, format=fmt, **kwargs)
         return base64.b64encode(buf.getvalue()).decode("utf-8")
-
     except ImportError:
-        # Pillow not installed — send raw
         with open(path, "rb") as f:
             return base64.b64encode(f.read()).decode("utf-8")
     except Exception:
@@ -266,63 +199,43 @@ def _read_and_resize_image(path: str, mime_type: str) -> str:
             return base64.b64encode(f.read()).decode("utf-8")
 
 
-# ── Video frame extraction ───────────────────────────
-
-def _extract_video_frames(video_path: str) -> list[str]:
-    """Extract key frames from a video using ffmpeg. Returns list of base64 JPEG strings."""
+def _extract_video_frames(video_path):
     if not shutil.which("ffmpeg") or not shutil.which("ffprobe"):
         return []
-
-    max_frames = config.MAX_VIDEO_FRAMES
     frames = []
-
     try:
-        # Get duration
         result = subprocess.run(
-            [
-                "ffprobe", "-v", "error",
-                "-show_entries", "format=duration",
-                "-of", "default=noprint_wrappers=1:nokey=1",
-                video_path,
-            ],
+            ["ffprobe", "-v", "error", "-show_entries", "format=duration",
+             "-of", "default=noprint_wrappers=1:nokey=1", video_path],
             capture_output=True, text=True, timeout=30,
         )
         duration = float(result.stdout.strip() or "0")
         if duration <= 0:
             return []
-
+        max_frames = config.MAX_VIDEO_FRAMES
         with tempfile.TemporaryDirectory() as tmpdir:
             interval = duration / (max_frames + 1)
             for i in range(max_frames):
-                timestamp = interval * (i + 1)
-                output = os.path.join(tmpdir, f"frame_{i}.jpg")
+                ts = interval * (i + 1)
+                out = os.path.join(tmpdir, f"frame_{i}.jpg")
                 subprocess.run(
-                    [
-                        "ffmpeg", "-ss", str(timestamp),
-                        "-i", video_path,
-                        "-vframes", "1",
-                        "-vf", f"scale='min({config.MAX_IMAGE_DIMENSION},iw)':'min({config.MAX_IMAGE_DIMENSION},ih)':force_original_aspect_ratio=decrease",
-                        "-q:v", "3",
-                        output,
-                    ],
+                    ["ffmpeg", "-ss", str(ts), "-i", video_path, "-vframes", "1",
+                     "-vf", f"scale='min({config.MAX_IMAGE_DIMENSION},iw)':'min({config.MAX_IMAGE_DIMENSION},ih)':force_original_aspect_ratio=decrease",
+                     "-q:v", "3", out],
                     capture_output=True, timeout=30,
                 )
-                if os.path.exists(output) and os.path.getsize(output) > 0:
-                    with open(output, "rb") as f:
+                if os.path.exists(out) and os.path.getsize(out) > 0:
+                    with open(out, "rb") as f:
                         frames.append(base64.b64encode(f.read()).decode("utf-8"))
     except Exception:
         pass
-
     return frames
 
 
-# ── Text extraction ──────────────────────────────────
-
-def _extract_text_content(path: str, filename: str) -> Optional[str]:
-    """Extract text from a text-based file."""
+def _extract_text_content(path):
     try:
         with open(path, "r", encoding="utf-8") as f:
-            return f.read(500_000)  # Cap at 500K chars
+            return f.read(500_000)
     except UnicodeDecodeError:
         try:
             with open(path, "r", encoding="latin-1") as f:
@@ -333,16 +246,15 @@ def _extract_text_content(path: str, filename: str) -> Optional[str]:
         return None
 
 
-def _extract_pdf_text(path: str) -> Optional[str]:
-    """Extract text from a PDF for storage/indexing."""
+def _extract_pdf_text(path):
     try:
         from PyPDF2 import PdfReader
         reader = PdfReader(path)
         pages = []
-        for page in reader.pages[:100]:  # Cap at 100 pages
+        for page in reader.pages[:100]:
             text = page.extract_text()
             if text:
                 pages.append(text)
         return "\n\n".join(pages) if pages else None
     except Exception:
-        return None
+        return None
\ No newline at end of file

backend/services/memory_service.py

 """
-Build the `messages` list for the Bedrock/Anthropic API from chat history.
-
-Keeps the most recent messages that fit within a character budget
-(rough proxy for tokens — 1 token ≈ 4 chars).
-
-Limits the total number of DB rows loaded to prevent hangs on very long chats.
+Build the messages list for the Bedrock/Anthropic API from chat history.
 """
 
 from sqlalchemy.orm import Session
 from backend.models import Chat, Message
 
-# ~100 000 tokens budget → ~400 000 characters
 MAX_CONTEXT_CHARS = 400_000
-
-# Hard cap: never load more than this many messages from the DB
 MAX_MESSAGES = 80
 
 
 def build_messages(chat: Chat, db: Session) -> list[dict]:
-    """
-    Return a list of {"role": ..., "content": ...} ready for the API.
-    Messages are oldest-first (chronological).
-    Only the most recent MAX_MESSAGES are considered, then trimmed by char budget.
-    """
-    # Fetch the most recent N messages (descending) then reverse to chronological
     rows: list[Message] = (
         db.query(Message)
         .filter(Message.chat_id == chat.id)
@@ -36,7 +22,6 @@ def build_messages(chat: Chat, db: Session) -> list[dict]:
     if not rows:
         return []
 
-    # --- trim from the oldest to fit character budget ---
     total_chars = sum(len(m.content or "") for m in rows)
     idx = 0
     while total_chars > MAX_CONTEXT_CHARS and idx < len(rows) - 2:
@@ -45,26 +30,20 @@ def build_messages(chat: Chat, db: Session) -> list[dict]:
 
     trimmed = rows[idx:]
 
-    # Anthropic requires the first message to be role=user.
-    # If trimming left an assistant message at the front, skip it.
     while trimmed and trimmed[0].role != "user":
         trimmed = trimmed[1:]
 
-    # Build the final list — collapse consecutive same-role messages
     result: list[dict] = []
     for m in trimmed:
         content = m.content or ""
         if not content.strip():
             continue
-
         role = m.role
         if role not in ("user", "assistant"):
             continue
-
         if result and result[-1]["role"] == role:
-            # Merge into previous
             result[-1]["content"] += "\n" + content
         else:
             result.append({"role": role, "content": content})
 
-    return result
+    return result
\ No newline at end of file

fix-and-deploy.sh

+#!/usr/bin/env bash
+set -uo pipefail
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+DIM='\033[2m'
+NC='\033[0m'
+
+PROJECT_DIR="$(cd "$(dirname "$0")" && pwd)"
+APP_NAME="son-of-anton"
+ERRORS=""
+WARNINGS=""
+
+banner() {
+  echo ""
+  echo -e "${CYAN}═══════════════════════════════════════════════════${NC}"
+  echo -e "${BOLD}  $1${NC}"
+  echo -e "${CYAN}═══════════════════════════════════════════════════${NC}"
+}
+
+ok()   { echo -e "  ${GREEN}✔${NC} $1"; }
+fail() { echo -e "  ${RED}✘${NC} $1"; ERRORS="${ERRORS}\n  ${RED}✘${NC} $1"; }
+step() { echo -e "  ${CYAN}▸${NC} $1"; }
+warn() { echo -e "  ${YELLOW}⚠${NC} $1"; WARNINGS="${WARNINGS}\n  ${YELLOW}⚠${NC} $1"; }
+info() { echo -e "  ${DIM}ℹ${NC} $1"; }
+
+has_errors() { [[ -n "$ERRORS" ]]; }
+
+cd "$PROJECT_DIR"
+
+# ══════════════════════════════════════════════════
+#  Step 0: Check ALL files at once
+# ══════════════════════════════════════════════════
+banner "Step 0 — Full File Verification (checks everything)"
+
+# ── api.js exports ──
+step "Checking api.js exports..."
+API_FILE="frontend/src/api.js"
+if [[ ! -f "$API_FILE" ]]; then
+  fail "frontend/src/api.js DOES NOT EXIST"
+else
+  API_MISSING=""
+  for EXPORT in adminStats adminListUsers adminCreateUser adminUpdateUser adminDeleteUser uploadAttachments getAttachmentUrl deleteAttachment downloadZip streamMessage login register getMe listChats createChat updateChat deleteChat getMessages listKnowledgeBases createKnowledgeBase deleteKnowledgeBase uploadDocuments; do
+    if ! grep -q "export.*${EXPORT}" "$API_FILE" 2>/dev/null; then
+      API_MISSING="$API_MISSING $EXPORT"
+    fi
+  done
+  if [[ -n "$API_MISSING" ]]; then
+    fail "api.js MISSING exports:${API_MISSING}"
+  else
+    ok "api.js — all 20 exports present"
+  fi
+fi
+
+# ── Dockerfile ──
+step "Checking Dockerfile..."
+if [[ ! -f Dockerfile ]]; then
+  fail "Dockerfile DOES NOT EXIST"
+else
+  DF_ISSUES=""
+  grep -q "\-\-include=dev" Dockerfile 2>/dev/null || DF_ISSUES="${DF_ISSUES} missing --include=dev"
+  grep -q "npx vite build" Dockerfile 2>/dev/null  || DF_ISSUES="${DF_ISSUES} missing 'npx vite build'"
+  grep -q "ENV NODE_ENV=" Dockerfile 2>/dev/null    || DF_ISSUES="${DF_ISSUES} missing 'ENV NODE_ENV='"
+  grep -q "ffmpeg" Dockerfile 2>/dev/null           || DF_ISSUES="${DF_ISSUES} missing ffmpeg install"
+  grep -q "chat_attachments" Dockerfile 2>/dev/null || DF_ISSUES="${DF_ISSUES} missing chat_attachments mkdir"
+  if [[ -n "$DF_ISSUES" ]]; then
+    fail "Dockerfile issues:${DF_ISSUES}"
+  else
+    ok "Dockerfile — all 5 checks pass"
+  fi
+fi
+
+# ── .dockerignore ──
+step "Checking .dockerignore..."
+if [[ ! -f .dockerignore ]]; then
+  fail ".dockerignore DOES NOT EXIST"
+else
+  DI_ISSUES=""
+  grep -q "node_modules" .dockerignore 2>/dev/null || DI_ISSUES="${DI_ISSUES} missing node_modules"
+  grep -q "__pycache__" .dockerignore 2>/dev/null  || DI_ISSUES="${DI_ISSUES} missing __pycache__"
+  if [[ -n "$DI_ISSUES" ]]; then
+    fail ".dockerignore issues:${DI_ISSUES}"
+  else
+    ok ".dockerignore — looks good"
+  fi
+fi
+
+# ── Backend files ──
+step "Checking backend files..."
+BACKEND_MISSING=""
+for F in backend/main.py backend/config.py backend/models.py backend/auth.py backend/database.py backend/seed.py backend/system_prompt.py backend/routes/auth_routes.py backend/routes/chat_routes.py backend/routes/admin_routes.py backend/routes/knowledge_routes.py backend/routes/files_routes.py backend/routes/attachment_routes.py backend/services/bedrock_service.py backend/services/memory_service.py backend/services/rag_service.py backend/services/code_extractor.py backend/services/attachment_service.py; do
+  if [[ ! -f "$F" ]]; then
+    BACKEND_MISSING="$BACKEND_MISSING $F"
+  fi
+done
+if [[ -n "$BACKEND_MISSING" ]]; then
+  fail "Missing backend files:${BACKEND_MISSING}"
+else
+  ok "All 18 backend files present"
+fi
+
+# ── Backend content checks ──
+step "Checking backend file contents..."
+CONTENT_ISSUES=""
+grep -q "attachment_router" backend/main.py 2>/dev/null            || CONTENT_ISSUES="${CONTENT_ISSUES} main.py: missing attachment_router import"
+grep -q "ChatAttachment" backend/models.py 2>/dev/null             || CONTENT_ISSUES="${CONTENT_ISSUES} models.py: missing ChatAttachment model"
+grep -q "ATTACHMENT_PATH" backend/config.py 2>/dev/null            || CONTENT_ISSUES="${CONTENT_ISSUES} config.py: missing ATTACHMENT_PATH"
+grep -q "attachment_ids" backend/routes/chat_routes.py 2>/dev/null || CONTENT_ISSUES="${CONTENT_ISSUES} chat_routes.py: missing attachment_ids"
+grep -q "build_claude_content_blocks" backend/services/attachment_service.py 2>/dev/null || CONTENT_ISSUES="${CONTENT_ISSUES} attachment_service.py: missing build_claude_content_blocks"
+if [[ -n "$CONTENT_ISSUES" ]]; then
+  fail "Backend content issues:${CONTENT_ISSUES}"
+else
+  ok "Backend file contents verified"
+fi
+
+# ── Frontend component files ──
+step "Checking frontend files..."
+FRONTEND_MISSING=""
+for F in frontend/src/App.jsx frontend/src/main.jsx frontend/src/store.jsx frontend/src/streamManager.js frontend/src/index.css frontend/src/components/ChatView.jsx frontend/src/components/MessageBubble.jsx frontend/src/components/CodeBlock.jsx frontend/src/components/Sidebar.jsx frontend/src/pages/LoginPage.jsx frontend/src/pages/ChatPage.jsx frontend/src/pages/AdminPage.jsx frontend/package.json frontend/vite.config.js frontend/tailwind.config.js frontend/postcss.config.js frontend/index.html; do
+  if [[ ! -f "$F" ]]; then
+    FRONTEND_MISSING="$FRONTEND_MISSING $F"
+  fi
+done
+if [[ -n "$FRONTEND_MISSING" ]]; then
+  fail "Missing frontend files:${FRONTEND_MISSING}"
+else
+  ok "All 17 frontend files present"
+fi
+
+# ── Frontend content checks ──
+step "Checking frontend file contents..."
+FE_ISSUES=""
+grep -q "uploadAttachments" frontend/src/components/ChatView.jsx 2>/dev/null || FE_ISSUES="${FE_ISSUES} ChatView.jsx: missing uploadAttachments"
+grep -q "getAttachmentUrl" frontend/src/components/MessageBubble.jsx 2>/dev/null || FE_ISSUES="${FE_ISSUES} MessageBubble.jsx: missing getAttachmentUrl"
+grep -q "Paperclip\|paperclip" frontend/src/components/ChatView.jsx 2>/dev/null || FE_ISSUES="${FE_ISSUES} ChatView.jsx: missing Paperclip (no file attach UI)"
+grep -q "Pillow" requirements.txt 2>/dev/null || FE_ISSUES="${FE_ISSUES} requirements.txt: missing Pillow"
+if [[ -n "$FE_ISSUES" ]]; then
+  fail "Frontend/deps content issues:${FE_ISSUES}"
+else
+  ok "Frontend file contents verified"
+fi
+
+# ── requirements.txt ──
+step "Checking requirements.txt..."
+REQ_MISSING=""
+for PKG in fastapi uvicorn sqlalchemy pyjwt passlib httpx chromadb PyPDF2 pydantic Pillow; do
+  if ! grep -qi "$PKG" requirements.txt 2>/dev/null; then
+    REQ_MISSING="$REQ_MISSING $PKG"
+  fi
+done
+if [[ -n "$REQ_MISSING" ]]; then
+  fail "requirements.txt missing:${REQ_MISSING}"
+else
+  ok "requirements.txt — all 10 packages present"
+fi
+
+# ══════════════════════════════════════════════════
+#  STOP if any errors
+# ══════════════════════════════════════════════════
+echo ""
+if has_errors; then
+  echo -e "${RED}${BOLD}═══════════════════════════════════════════════════${NC}"
+  echo -e "${RED}${BOLD}  FILES ARE BROKEN — Cannot deploy${NC}"
+  echo -e "${RED}${BOLD}═══════════════════════════════════════════════════${NC}"
+  echo ""
+  echo -e "${BOLD}All issues found:${NC}"
+  echo -e "$ERRORS"
+  echo ""
+  echo -e "${YELLOW}${BOLD}Fix ALL of the above, then run this script again.${NC}"
+  echo ""
+  exit 1
+fi
+
+echo ""
+echo -e "  ${GREEN}${BOLD}All file checks passed ✔${NC}"
+
+# ══════════════════════════════════════════════════
+#  Step 1: Local build test
+# ══════════════════════════════════════════════════
+banner "Step 1 — Local Build Test"
+
+step "Cleaning frontend/node_modules and dist..."
+rm -rf frontend/node_modules frontend/dist 2>/dev/null || true
+
+step "npm install..."
+cd frontend
+if ! npm install --legacy-peer-deps --include=dev 2>&1 | tail -5; then
+  echo -e "\n  ${RED}${BOLD}npm install failed. Fix above errors.${NC}"
+  exit 1
+fi
+ok "Dependencies installed"
+
+step "Building frontend..."
+if ! npm run build 2>&1; then
+  echo -e "\n  ${RED}${BOLD}BUILD FAILED. Fix the errors shown above.${NC}"
+  exit 1
+fi
+ok "Frontend builds clean"
+cd "$PROJECT_DIR"
+
+# ══════════════════════════════════════════════════
+#  Step 2: Get CapRover credentials
+# ══════════════════════════════════════════════════
+banner "Step 2 — CapRover Connection"
+
+echo -e "  ${BOLD}CapRover URL${NC} (e.g. https://captain.yourdomain.com):"
+read -r CAPROVER_URL
+CAPROVER_URL="${CAPROVER_URL%/}"
+[[ -z "$CAPROVER_URL" ]] && { echo -e "  ${RED}URL required${NC}"; exit 1; }
+
+echo -e "  ${BOLD}CapRover password:${NC}"
+read -rs CAPROVER_PASSWORD
+echo ""
+[[ -z "$CAPROVER_PASSWORD" ]] && { echo -e "  ${RED}Password required${NC}"; exit 1; }
+
+step "Authenticating..."
+LOGIN_RESP=$(curl -s -X POST "${CAPROVER_URL}/api/v2/login" \
+  -H "Content-Type: application/json" \
+  -H "x-namespace: captain" \
+  -d "{\"password\": \"${CAPROVER_PASSWORD}\"}" \
+  --connect-timeout 15 --max-time 30 2>&1) || { echo -e "  ${RED}Cannot reach CapRover${NC}"; exit 1; }
+
+TOKEN=$(echo "$LOGIN_RESP" | python3 -c "
+import sys, json
+try:
+    d = json.load(sys.stdin)
+    print(d['data']['token'] if d.get('status') == 100 else '')
+except: pass
+" 2>/dev/null)
+
+[[ -z "$TOKEN" ]] && { echo -e "  ${RED}Login failed: $(echo "$LOGIN_RESP" | head -c 200)${NC}"; exit 1; }
+ok "Authenticated"
+
+# ══════════════════════════════════════════════════
+#  Step 3: Build tarball from LOCAL files
+# ══════════════════════════════════════════════════
+banner "Step 3 — Build Deploy Package"
+
+rm -rf frontend/node_modules frontend/dist 2>/dev/null || true
+
+TMPDIR=$(mktemp -d)
+TARBALL="${TMPDIR}/deploy.tar"
+
+step "Creating tarball..."
+tar cf "$TARBALL" \
+  --exclude='.git' \
+  --exclude='node_modules' \
+  --exclude='dist' \
+  --exclude='.DS_Store' \
+  --exclude='__pycache__' \
+  --exclude='*.pyc' \
+  --exclude='.env' \
+  --exclude='.env.local' \
+  --exclude='.idea' \
+  --exclude='.vscode' \
+  --exclude='main.py' \
+  --exclude='create-project.ps1' \
+  --exclude='*.sh' \
+  .
+
+TARSIZE=$(du -sh "$TARBALL" | cut -f1)
+ok "Tarball: ${TARSIZE}"
+
+# Verify inside tarball
+step "Verifying tarball contents..."
+TAR_ERRORS=""
+for F in Dockerfile .dockerignore requirements.txt warmup.py backend/main.py backend/routes/attachment_routes.py backend/services/attachment_service.py frontend/package.json frontend/src/api.js frontend/src/components/ChatView.jsx frontend/src/components/MessageBubble.jsx; do
+  if ! tar tf "$TARBALL" "./${F}" > /dev/null 2>&1; then
+    TAR_ERRORS="${TAR_ERRORS} ${F}"
+  fi
+done
+if [[ -n "$TAR_ERRORS" ]]; then
+  echo -e "  ${RED}Tarball missing:${TAR_ERRORS}${NC}"
+  rm -rf "$TMPDIR"
+  exit 1
+fi
+
+# Verify actual content inside tarball
+API_COUNT=$(tar xf "$TARBALL" -O ./frontend/src/api.js 2>/dev/null | grep -c "adminStats" || true)
+DF_COUNT=$(tar xf "$TARBALL" -O ./Dockerfile 2>/dev/null | grep -c "\-\-include=dev" || true)
+if [[ "$API_COUNT" -lt 1 ]]; then
+  echo -e "  ${RED}api.js inside tarball has NO adminStats export!${NC}"
+  rm -rf "$TMPDIR"
+  exit 1
+fi
+if [[ "$DF_COUNT" -lt 1 ]]; then
+  echo -e "  ${RED}Dockerfile inside tarball is OLD (no --include=dev)!${NC}"
+  rm -rf "$TMPDIR"
+  exit 1
+fi
+ok "Tarball contents verified (api.js ✔, Dockerfile ✔)"
+
+# ══════════════════════════════════════════════════
+#  Step 4: Deploy
+# ══════════════════════════════════════════════════
+banner "Step 4 — Deploy to CapRover"
+
+step "Uploading & building (5-15 min)..."
+info "node:20 → npm install → vite build → python:3.11 → pip install → chromadb warmup"
+echo ""
+
+DEPLOY_RESP=$(curl -s -X POST \
+  "${CAPROVER_URL}/api/v2/user/apps/appData/${APP_NAME}?gitHash=$(date +%s)" \
+  -H "x-namespace: captain" \
+  -H "x-captain-auth: ${TOKEN}" \
+  -F "sourceFile=@${TARBALL}" \
+  --connect-timeout 30 \
+  --max-time 1200 \
+  2>&1)
+
+rm -rf "$TMPDIR"
+
+DEPLOY_STATUS=$(echo "$DEPLOY_RESP" | python3 -c "
+import sys, json
+try:
+    d = json.load(sys.stdin)
+    if d.get('status') == 100:
+        print('SUCCESS')
+    else:
+        print('FAIL:' + (d.get('description','') or d.get('message','') or str(d)))
+except Exception as e:
+    print('FAIL:' + str(e))
+" 2>/dev/null)
+
+echo ""
+if [[ "$DEPLOY_STATUS" == "SUCCESS" ]]; then
+  echo -e "  ${GREEN}${BOLD}═══════════════════════════════════════════════════${NC}"
+  echo -e "  ${GREEN}${BOLD}  🔥 DEPLOYMENT SUCCESSFUL!${NC}"
+  echo -e "  ${GREEN}${BOLD}═══════════════════════════════════════════════════${NC}"
+  echo ""
+  ok "Son of Anton is live."
+  echo ""
+  info "Default login: superadmin / (your SUPERADMIN_PASSWORD env var)"
+  echo ""
+else
+  ERRMSG="${DEPLOY_STATUS#FAIL:}"
+  echo -e "  ${RED}${BOLD}═══════════════════════════════════════════════════${NC}"
+  echo -e "  ${RED}${BOLD}  ✘ DEPLOYMENT FAILED${NC}"
+  echo -e "  ${RED}${BOLD}═══════════════════════════════════════════════════${NC}"
+  echo ""
+  echo -e "  ${RED}Error: ${ERRMSG}${NC}"
+  echo ""
+
+  step "Fetching build logs..."
+  sleep 3
+  BUILD_LOG=$(curl -s -X POST "${CAPROVER_URL}/api/v2/user/apps/appData/${APP_NAME}/buildLogs" \
+    -H "x-namespace: captain" \
+    -H "x-captain-auth: ${TOKEN}" \
+    -H "Content-Type: application/json" \
+    -d "{\"appName\": \"${APP_NAME}\"}" \
+    --connect-timeout 10 --max-time 15 2>&1)
+
+  LOGS=$(echo "$BUILD_LOG" | python3 -c "
+import sys, json
+try:
+    d = json.load(sys.stdin)
+    logs = d.get('data', {}).get('logs', '') or ''
+    if not logs: logs = json.dumps(d, indent=2)
+    for line in logs.strip().split('\n')[-60:]:
+        print(line)
+except: print('Could not fetch logs')
+" 2>/dev/null)
+
+  if [[ -n "$LOGS" ]]; then
+    echo -e "  ${YELLOW}── Build Logs (last 60 lines) ──${NC}"
+    echo ""
+    echo "$LOGS" | while IFS= read -r line; do
+      if echo "$line" | grep -qiE "error|ERR!|failed|FATAL|not exported"; then
+        echo -e "    ${RED}${line}${NC}"
+      elif echo "$line" | grep -qiE "Step "; then
+        echo -e "    ${CYAN}${line}${NC}"
+      else
+        echo -e "    ${DIM}${line}${NC}"
+      fi
+    done
+    echo ""
+    echo -e "  ${YELLOW}── End ──${NC}"
+  fi
+  exit 1
+fi
\ No newline at end of file

frontend/src/api.js

@@ -6,19 +6,21 @@ function headers(token) {
   return h;
 }
 
+function authHeader(token) {
+  return token ? { Authorization: `Bearer ${token}` } : {};
+}
+
 async function request(method, path, token, body) {
   const opts = { method, headers: headers(token) };
   if (body) opts.body = JSON.stringify(body);
   const res = await fetch(`${BASE}${path}`, opts);
   if (!res.ok) {
     const err = await res.json().catch(() => ({ detail: res.statusText }));
-    throw new Error(err.detail || `Request failed: ${res.status}`);
+    throw new Error(err.detail || err.message || "Request failed");
   }
-  if (res.status === 204) return null;
   return res.json();
 }
 
-/* ── Auth ─────────────────────────────────── */
 export const login = (username, password) =>
   request("POST", "/auth/login", null, { username, password });
 
@@ -27,12 +29,9 @@ export const register = (username, email, password) =>
 
 export const getMe = (token) => request("GET", "/auth/me", token);
 
-/* ── Chats ─────────────────────────────────── */
-export const listChats = (token) =>
-  request("GET", "/chats", token);
+export const listChats = (token) => request("GET", "/chats", token);
 
-export const createChat = (token, data = {}) =>
-  request("POST", "/chats", token, data);
+export const createChat = (token, data = {}) => request("POST", "/chats", token, data);
 
 export const updateChat = (token, chatId, data) =>
   request("PUT", `/chats/${chatId}`, token, data);
@@ -46,88 +45,57 @@ export const deleteChat = (token, chatId) =>
 export const getMessages = (token, chatId) =>
   request("GET", `/chats/${chatId}/messages`, token);
 
-/* ── Streaming message (accepts AbortSignal) ─ */
 export async function* streamMessage(token, chatId, body, signal) {
   const res = await fetch(`${BASE}/chats/${chatId}/messages`, {
-    method: "POST",
-    headers: headers(token),
-    body: JSON.stringify(body),
-    signal,
+    method: "POST", headers: headers(token),
+    body: JSON.stringify(body), signal,
   });
-
   if (!res.ok) {
     const err = await res.json().catch(() => ({ detail: res.statusText }));
     throw new Error(err.detail || "Stream failed");
   }
-
   const reader = res.body.getReader();
   const decoder = new TextDecoder();
   let buffer = "";
-
   while (true) {
     const { done, value } = await reader.read();
     if (done) break;
-
     buffer += decoder.decode(value, { stream: true });
     const parts = buffer.split("\n\n");
     buffer = parts.pop() || "";
-
     for (const part of parts) {
       const line = part.trim();
       if (line.startsWith("data: ")) {
-        try {
-          yield JSON.parse(line.slice(6));
-        } catch {
-          /* skip malformed */
-        }
+        try { yield JSON.parse(line.slice(6)); } catch { }
       }
     }
   }
-
-  // flush
   if (buffer.trim().startsWith("data: ")) {
-    try {
-      yield JSON.parse(buffer.trim().slice(6));
-    } catch {
-      /* skip */
-    }
+    try { yield JSON.parse(buffer.trim().slice(6)); } catch { }
   }
 }
 
-/* ── File Uploads (Attachments) ───────────── */
 export async function uploadAttachments(token, chatId, files) {
-  const formData = new FormData();
-  for (const file of files) {
-    formData.append("files", file);
-  }
-
+  const form = new FormData();
+  for (const file of files) form.append("files", file);
   const res = await fetch(`${BASE}/chats/${chatId}/attachments`, {
-    method: "POST",
-    headers: {
-      Authorization: `Bearer ${token}`,
-      // Do NOT set Content-Type — browser sets it with boundary for multipart
-    },
-    body: formData,
+    method: "POST", headers: authHeader(token), body: form,
   });
-
   if (!res.ok) {
-    const err = await res.json().catch(() => ({ detail: res.statusText }));
+    const err = await res.json().catch(() => ({}));
     throw new Error(err.detail || "Upload failed");
   }
-
   return res.json();
 }
 
-export const listAttachments = (token, chatId) =>
-  request("GET", `/chats/${chatId}/attachments`, token);
-
-export function getAttachmentPreviewUrl(chatId, attachmentId) {
-  return `${BASE}/chats/${chatId}/attachments/${attachmentId}/preview`;
+export function getAttachmentUrl(attachmentId) {
+  return `${BASE}/attachments/${attachmentId}/file`;
 }
 
-/* ── Knowledge Bases ───────────────────────── */
-export const listKnowledgeBases = (token) =>
-  request("GET", "/knowledge", token);
+export const deleteAttachment = (token, attachmentId) =>
+  request("DELETE", `/attachments/${attachmentId}`, token);
+
+export const listKnowledgeBases = (token) => request("GET", "/knowledge", token);
 
 export const createKnowledgeBase = (token, name, description = "") =>
   request("POST", "/knowledge", token, { name, description });
@@ -139,50 +107,53 @@ export const deleteKnowledgeBase = (token, kbId) =>
   request("DELETE", `/knowledge/${kbId}`, token);
 
 export async function uploadDocuments(token, kbId, files) {
-  const formData = new FormData();
-  for (const file of files) {
-    formData.append("files", file);
-  }
-
-  const res = await fetch(`${BASE}/knowledge/${kbId}/documents`, {
-    method: "POST",
-    headers: { Authorization: `Bearer ${token}` },
-    body: formData,
+  const form = new FormData();
+  for (const file of files) form.append("files", file);
+  const res = await fetch(`${BASE}/knowledge/${kbId}/upload`, {
+    method: "POST", headers: authHeader(token), body: form,
   });
-
   if (!res.ok) {
-    const err = await res.json().catch(() => ({ detail: res.statusText }));
+    const err = await res.json().catch(() => ({}));
     throw new Error(err.detail || "Upload failed");
   }
-
   return res.json();
 }
 
-export const deleteDocument = (token, kbId, docId) =>
-  request("DELETE", `/knowledge/${kbId}/documents/${docId}`, token);
+export const uploadDocument = (token, kbId, file) =>
+  uploadDocuments(token, kbId, [file]);
+
+export const adminStats = (token) => request("GET", "/admin/stats", token);
 
-/* ── Admin ─────────────────────────────────── */
-export const adminListUsers = (token) =>
-  request("GET", "/admin/users", token);
+export const adminListUsers = (token) => request("GET", "/admin/users", token);
+
+export const adminCreateUser = (token, data) =>
+  request("POST", "/admin/users", token, data);
 
 export const adminUpdateUser = (token, userId, data) =>
   request("PUT", `/admin/users/${userId}`, token, data);
 
-/* ── Download Zip ──────────────────────────── */
-export async function downloadZip(token, content) {
-  const res = await fetch(`${BASE}/download-zip`, {
-    method: "POST",
-    headers: headers(token),
-    body: JSON.stringify({ content }),
-  });
+export const adminDeleteUser = (token, userId) =>
+  request("DELETE", `/admin/users/${userId}`, token);
 
-  if (!res.ok) throw new Error("Download failed");
+export const adminListChats = (token) => request("GET", "/admin/chats", token);
 
-  const blob = await res.blob();
-  const url = URL.createObjectURL(blob);
-  const a = document.createElement("a");
-  a.href = url;
-  a.download = "code-files.zip";
-  a.click();
-  URL.revokeObjectURL(url);
-}
+export async function downloadZip(token, markdown) {
+  const res = await fetch(`${BASE}/files/download-zip`, {
+    method: "POST", headers: headers(token),
+    body: JSON.stringify({ markdown }),
+  });
+  if (!res.ok) throw new Error("Download failed");
+  const ct = res.headers.get("content-type") || "";
+  if (ct.includes("application/zip")) {
\ No newline at end of file
+    const blob = await res.blob();
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement("a");
+    a.href = url;
+    a.download = "son-of-anton-code.zip";
+    a.click();
+    URL.revokeObjectURL(url);
+  } else {
+    const data = await res.json();
+    if (data.error) throw new Error(data.error);
+  }
+}

frontend/src/components/ChatView.jsx

-import React, { useEffect, useRef, useState, useCallback } from "react";
+import React, { useState, useEffect, useRef, useCallback } from "react";
 import { useApp } from "../store";
-import { getMessages, downloadZip, uploadAttachments } from "../api";
+import { getMessages, downloadZip, listKnowledgeBases, updateChat, uploadAttachments } from "../api";
 import * as streamManager from "../streamManager";
 import MessageBubble from "./MessageBubble";
-import FileUploadButton from "./FileUploadButton";
-import AttachmentPreview from "./AttachmentPreview";
-import {
-  Send,
-  Square,
-  Download,
-  ChevronDown,
-  Loader2,
-  Paperclip,
-} from "lucide-react";
+import { Send, Square, Settings2, X, Brain, BookOpen, Paperclip, Image, FileText, Film, Loader2 } from "lucide-react";
 
-export default function ChatView({ chatId }) {
-  const { state, dispatch } = useApp();
-  const [input, setInput] = useState("");
-  const [pendingFiles, setPendingFiles] = useState([]); // File objects waiting to be sent
-  const [uploadingFiles, setUploadingFiles] = useState(false);
-  const [model, setModel] = useState(
-    () =>
-      state.chats.find((c) => c.id === chatId)?.model ||
-      "us.anthropic.claude-sonnet-4-20250514"
-  );
-  const [maxTokens, setMaxTokens] = useState(
-    () => state.chats.find((c) => c.id === chatId)?.max_tokens || 16384
-  );
-  const [reasoningBudget, setReasoningBudget] = useState(
-    () => state.chats.find((c) => c.id === chatId)?.reasoning_budget || 10000
-  );
-  const [selectedKbId, setSelectedKbId] = useState(
-    () => state.chats.find((c) => c.id === chatId)?.knowledge_base_id || ""
-  );
-  const [showSettings, setShowSettings] = useState(false);
+const MODELS = [
+  { id: "eu.anthropic.claude-opus-4-6-v1", label: "Claude Opus 4.6 (Primary)" },
+  { id: "eu.anthropic.claude-haiku-4-5-20251001-v1:0", label: "Claude Haiku 4.5 (Fast)" },
+];
 
-  const scrollContainerRef = useRef(null);
-  const shouldAutoScrollRef = useRef(true);
-  const textareaRef = useRef(null);
+function classifyFile(file) {
+  const ext = (file.name || "").split(".").pop().toLowerCase();
+  const mime = file.type || "";
+  if (mime.startsWith("image/") || ["jpg","jpeg","png","gif","webp","bmp"].includes(ext)) return "image";
+  if (mime.startsWith("video/") || ["mp4","mov","avi","mkv","webm"].includes(ext)) return "video";
+  if (mime === "application/pdf" || ext === "pdf") return "document";
+  return "text";
+}
 
+export default function ChatView({ chatId }) {
+  const { state, dispatch } = useApp();
+  const currentChat = state.chats.find((c) => c.id === chatId);
   const messages = state.chatMessages[chatId] || [];
+  const isStreamingGlobal = !!state.activeStreams[chatId];
 
-  // Per-chat streaming state — subscribe to stream manager
-  const [streamData, setStreamData] = useState(() =>
-    streamManager.getStreamData(chatId)
-  );
+  const [input, setInput] = useState("");
+  const [showSettings, setShowSettings] = useState(false);
+  const [model, setModel] = useState(currentChat?.model || MODELS[0].id);
+  const [maxTokens, setMaxTokens] = useState(currentChat?.max_tokens || 4096);
+  const [reasoningBudget, setReasoningBudget] = useState(currentChat?.reasoning_budget ?? 0);
+  const [selectedKbId, setSelectedKbId] = useState(currentChat?.knowledge_base_id || null);
+  const [kbs, setKbs] = useState([]);
+  const [pendingFiles, setPendingFiles] = useState([]);
+  const [uploading, setUploading] = useState(false);
+  const [streamData, setStreamData] = useState(streamManager.getStreamData(chatId));
+
+  const scrollRef = useRef(null);
+  const inputRef = useRef(null);
+  const fileRef = useRef(null);
+  const autoScroll = useRef(true);
+  const rafRef = useRef(null);
 
   useEffect(() => {
-    // Initial read
     setStreamData(streamManager.getStreamData(chatId));
-
-    // Subscribe to updates for THIS chat
-    const unsub = streamManager.subscribe(chatId, () => {
-      setStreamData(streamManager.getStreamData(chatId));
-    });
-    return unsub;
+    return streamManager.subscribe(chatId, () => setStreamData(streamManager.getStreamData(chatId)));
   }, [chatId]);
 
-  // Load messages on mount
-  useEffect(() => {
-    if (!state.chatMessages[chatId]) {
-      getMessages(state.token, chatId)
-        .then((msgs) => dispatch({ type: "SET_MESSAGES", chatId, messages: msgs }))
-        .catch(() => {});
-    }
-  }, [chatId, state.token, dispatch, state.chatMessages]);
+  function onScroll() {
+    const el = scrollRef.current;
+    if (!el) return;
+    autoScroll.current = el.scrollHeight - el.scrollTop - el.clientHeight < 200;
+  }
+
+  const scrollBottom = useCallback(() => {
+    if (!autoScroll.current || rafRef.current) return;
+    rafRef.current = requestAnimationFrame(() => {
+      if (scrollRef.current) scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
+      rafRef.current = null;
+    });
+  }, []);
 
-  // Auto-scroll
   useEffect(() => {
-    if (shouldAutoScrollRef.current && scrollContainerRef.current) {
-      const el = scrollContainerRef.current;
-      el.scrollTop = el.scrollHeight;
-    }
-  }, [messages, streamData]);
+    (async () => {
+      try {
+        const [msgs, kbData] = await Promise.all([getMessages(state.token, chatId), listKnowledgeBases(state.token)]);
+        dispatch({ type: "SET_MESSAGES", chatId, messages: msgs });
+        setKbs(kbData);
+      } catch {}
+    })();
+  }, [chatId, state.token, dispatch]);
+
+  useEffect(scrollBottom, [messages, streamData.text, streamData.thinking, scrollBottom]);
+  useEffect(() => { inputRef.current?.focus(); }, [chatId]);
+
+  async function saveSettings() {
+    try {
+      await updateChat(state.token, chatId, { model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId || "" });
+      dispatch({ type: "UPDATE_CHAT", chat: { id: chatId, model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId } });
+    } catch {}
+  }
 
-  function handleContainerScroll() {
-    const el = scrollContainerRef.current;
-    if (!el) return;
-    const nearBottom = el.scrollHeight - el.scrollTop - el.clientHeight < 100;
-    shouldAutoScrollRef.current = nearBottom;
+  function toggleSettings() {
+    if (showSettings) saveSettings();
+    setShowSettings(!showSettings);
   }
 
-  function scrollToBottom() {
-    if (scrollContainerRef.current) {
-      scrollContainerRef.current.scrollTop =
-        scrollContainerRef.current.scrollHeight;
-      shouldAutoScrollRef.current = true;
-    }
+  function handleFileSelect(e) {
+    const files = Array.from(e.target.files || []);
+    setPendingFiles((prev) => [...prev, ...files.map((f) => ({ file: f, type: classifyFile(f), preview: classifyFile(f) === "image" ? URL.createObjectURL(f) : null }))]);
+    e.target.value = "";
   }
 
-  // THIS chat streaming — only blocks sends for THIS chat, not others
-  const isChatStreaming = !!state.activeStreams[chatId];
+  function removePending(i) {
+    setPendingFiles((prev) => { if (prev[i]?.preview) URL.revokeObjectURL(prev[i].preview); return prev.filter((_, j) => j !== i); });
+  }
 
   async function handleSend() {
     const content = input.trim();
-    if ((!content && pendingFiles.length === 0) || isChatStreaming) return;
-
-    // Optimistic user message (with attachment previews)
-    const userMsg = {
-      id: `tmp-${Date.now()}`,
-      role: "user",
-      content: content || "(attached files)",
-      created_at: new Date().toISOString(),
-      attachments: pendingFiles.map((f) => ({
-        id: `pending-${f.name}`,
-        filename: f.name,
-        mime_type: f.type,
-        file_size: f.size,
-        media_type: classifyFile(f),
-        preview_url: f.type.startsWith("image/") ? URL.createObjectURL(f) : null,
-      })),
-    };
-    dispatch({ type: "ADD_MESSAGE", chatId, message: userMsg });
-    setInput("");
-    shouldAutoScrollRef.current = true;
+    if ((!content && !pendingFiles.length) || isStreamingGlobal) return;
+    const text = content || "Please analyze the attached file(s).";
 
-    // Upload files if any
-    let attachmentIds = [];
-    if (pendingFiles.length > 0) {
-      setUploadingFiles(true);
+    let attIds = [], uploaded = [];
+    if (pendingFiles.length) {
+      setUploading(true);
       try {
-        const uploaded = await uploadAttachments(
-          state.token,
-          chatId,
-          pendingFiles
-        );
-        attachmentIds = uploaded.map((a) => a.id);
-      } catch (err) {
-        // Add error message
-        dispatch({
-          type: "ADD_MESSAGE",
-          chatId,
-          message: {
-            id: `err-${Date.now()}`,
-            role: "assistant",
-            content: `**Upload failed:** ${err.message}`,
-            created_at: new Date().toISOString(),
-          },
-        });
-        setUploadingFiles(false);
-        return;
-      }
-      setUploadingFiles(false);
-      setPendingFiles([]);
-    } else {
-      setPendingFiles([]);
+        const res = await uploadAttachments(state.token, chatId, pendingFiles.map((p) => p.file));
+        uploaded = (res.attachments || []).filter((a) => !a.error);
+        attIds = uploaded.map((a) => a.id);
+      } catch (err) { console.error(err); setUploading(false); return; }
+      setUploading(false);
     }
 
-    // Sync settings to store
-    dispatch({
-      type: "UPDATE_CHAT",
-      chat: {
-        id: chatId,
-        model,
-        max_tokens: maxTokens,
-        reasoning_budget: reasoningBudget,
-        knowledge_base_id: selectedKbId,
-      },
-    });
-
-    // Start stream — includes attachment_ids
-    streamManager.startStream({
-      token: state.token,
-      chatId,
-      body: {
-        content: content || "Please describe and analyze the attached file(s).",
-        model,
-        max_tokens: maxTokens,
-        reasoning_budget: reasoningBudget,
-        knowledge_base_id: selectedKbId,
-        attachment_ids: attachmentIds,
-      },
-    });
-  }
-
-  function handleStop() {
-    streamManager.abortStream(chatId);
-  }
+    dispatch({ type: "ADD_MESSAGE", chatId, message: { id: `tmp-${Date.now()}`, role: "user", content: text, created_at: new Date().toISOString(), attachments: uploaded } });
+    setInput("");
+    pendingFiles.forEach((p) => { if (p.preview) URL.revokeObjectURL(p.preview); });
+    setPendingFiles([]);
+    autoScroll.current = true;
 
-  function handleKeyDown(e) {
-    if (e.key === "Enter" && !e.shiftKey) {
-      e.preventDefault();
-      handleSend();
-    }
+    dispatch({ type: "UPDATE_CHAT", chat: { id: chatId, model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId } });
+    streamManager.startStream({ token: state.token, chatId, body: { content: text, model, max_tokens: maxTokens, reasoning_budget: reasoningBudget, knowledge_base_id: selectedKbId, attachment_ids: attIds } });
   }
 
-  function handleFilesSelected(files) {
-    setPendingFiles((prev) => [...prev, ...Array.from(files)]);
-  }
-
-  function handleRemovePendingFile(index) {
-    setPendingFiles((prev) => prev.filter((_, i) => i !== index));
-  }
+  function handleKeyDown(e) { if (e.key === "Enter" && !e.shiftKey) { e.preventDefault(); handleSend(); } }
 
   function handlePaste(e) {
-    const items = e.clipboardData?.items;
-    if (!items) return;
-
-    const files = [];
-    for (const item of items) {
-      if (item.kind === "file") {
-        const file = item.getAsFile();
-        if (file) files.push(file);
-      }
-    }
-    if (files.length > 0) {
-      e.preventDefault();
-      handleFilesSelected(files);
-    }
-  }
-
-  function handleDrop(e) {
+    const imgs = Array.from(e.clipboardData?.items || []).filter((i) => i.type.startsWith("image/"));
+    if (!imgs.length) return;
     e.preventDefault();
-    e.stopPropagation();
-    const files = e.dataTransfer?.files;
-    if (files && files.length > 0) {
-      handleFilesSelected(files);
-    }
+    setPendingFiles((prev) => [...prev, ...imgs.map((i) => { const f = i.getAsFile(); return { file: f, type: "image", preview: URL.createObjectURL(f) }; })]);
   }
 
-  function handleDragOver(e) {
+  function handleDrop(e) {
     e.preventDefault();
-    e.stopPropagation();
-  }
-
-  async function handleDownloadAll() {
-    const all = messages
-      .filter((m) => m.role === "assistant")
-      .map((m) => m.content)
-      .join("\n\n---\n\n");
-    if (all) {
-      try {
-        await downloadZip(state.token, all);
-      } catch {
-        /* */
-      }
-    }
+    const files = Array.from(e.dataTransfer?.files || []);
+    if (files.length) setPendingFiles((prev) => [...prev, ...files.map((f) => ({ file: f, type: classifyFile(f), preview: classifyFile(f) === "image" ? URL.createObjectURL(f) : null }))]);
   }
 
   const streaming = streamData.streaming;
 
   return (
-    <div
-      className="flex-1 flex flex-col min-h-0"
-      onDrop={handleDrop}
-      onDragOver={handleDragOver}
-    >
-      {/* Header Bar */}
-      <div className="flex items-center justify-between px-4 py-2 border-b border-anton-border bg-anton-surface/50 backdrop-blur-sm">
-        <div className="flex items-center gap-3">
-          <h2 className="text-sm font-semibold text-white truncate max-w-[200px]">
-            {state.chats.find((c) => c.id === chatId)?.title || "New Chat"}
-          </h2>
-          {isChatStreaming && (
-            <span className="flex items-center gap-1 text-xs text-anton-accent">
-              <Loader2 size={12} className="animate-spin" />
-              Streaming
-            </span>
-          )}
-        </div>
-
-        <div className="flex items-center gap-2">
-          <button
-            onClick={() => setShowSettings(!showSettings)}
-            className="text-xs text-anton-muted hover:text-white px-2 py-1 rounded hover:bg-anton-card transition"
-          >
-            ⚙ Settings
-          </button>
-          <button
-            onClick={handleDownloadAll}
-            className="flex items-center gap-1 text-xs text-anton-muted hover:text-anton-accent px-2 py-1 rounded hover:bg-anton-accent/10 transition"
-          >
-            <Download size={12} />
-            Export
-          </button>
-        </div>
+    <div className="flex-1 flex flex-col min-h-0" onDrop={handleDrop} onDragOver={(e) => e.preventDefault()}>
+      <div ref={scrollRef} onScroll={onScroll} className="flex-1 overflow-y-auto px-4 py-4 space-y-4">
+        {messages.map((m) => <MessageBubble key={m.id} message={m} token={state.token} />)}
+        {streaming && (streamData.thinking || streamData.text) && (
+          <MessageBubble message={{ id: "streaming", role: "assistant", content: streamData.text, thinking_content: streamData.thinking || null, attachments: [] }} isStreaming isThinking={streamData.isThinking} token={state.token} />
+        )}
+        {streaming && !streamData.text && !streamData.thinking && (
+          <div className="flex items-center gap-2 px-4 py-3 animate-fade-in">
+            <div className="flex gap-1">
+              <span className="w-2 h-2 bg-anton-accent rounded-full animate-bounce" style={{ animationDelay: "0ms" }} />
+              <span className="w-2 h-2 bg-anton-accent rounded-full animate-bounce" style={{ animationDelay: "150ms" }} />
+              <span className="w-2 h-2 bg-anton-accent rounded-full animate-bounce" style={{ animationDelay: "300ms" }} />
+            </div>
+            <span className="text-anton-muted text-sm">Son of Anton is thinking…</span>
+          </div>
+        )}
       </div>
 
-      {/* Settings Panel */}
-      {showSettings && (
-        <div className="px-4 py-3 border-b border-anton-border bg-anton-surface/80 backdrop-blur-sm animate-fade-in">
-          <div className="flex flex-wrap gap-4 items-end">
-            <label className="flex flex-col gap-1">
-              <span className="text-[11px] text-anton-muted uppercase tracking-wider">
-                Model
-              </span>
-              <select
-                value={model}
-                onChange={(e) => setModel(e.target.value)}
-                className="bg-anton-card border border-anton-border rounded px-2 py-1 text-xs text-white focus:outline-none focus:border-anton-accent"
-              >
-                <option value="us.anthropic.claude-sonnet-4-20250514">
-                  Claude Sonnet 4
-                </option>
-                <option value="us.anthropic.claude-opus-4-20250514">
-                  Claude Opus 4
-                </option>
+      <div className="border-t border-anton-border bg-anton-surface p-4">
+        {showSettings && (
+          <div className="mb-3 bg-anton-card border border-anton-border rounded-xl p-4 space-y-4 animate-fade-in">
+            <div className="flex items-center justify-between">
+              <h3 className="text-sm font-semibold text-white flex items-center gap-1.5"><Settings2 size={14} className="text-anton-accent" /> Settings</h3>
+              <button onClick={toggleSettings} className="text-anton-muted hover:text-white"><X size={14} /></button>
+            </div>
+            <div>
+              <label className="text-xs text-anton-muted mb-1 block">Model</label>
+              <select value={model} onChange={(e) => setModel(e.target.value)} className="w-full bg-anton-bg border border-anton-border rounded-lg px-3 py-2 text-white text-sm focus:outline-none focus:border-anton-accent">
+                {MODELS.map((m) => <option key={m.id} value={m.id}>{m.label}</option>)}
               </select>
-            </label>
-            <label className="flex flex-col gap-1">
-              <span className="text-[11px] text-anton-muted uppercase tracking-wider">
-                Max Tokens
-              </span>
-              <input
-                type="number"
-                value={maxTokens}
-                onChange={(e) => setMaxTokens(Number(e.target.value))}
-                min={256}
-                max={128000}
-                className="bg-anton-card border border-anton-border rounded px-2 py-1 text-xs text-white w-24 focus:outline-none focus:border-anton-accent"
-              />
-            </label>
-            <label className="flex flex-col gap-1">
-              <span className="text-[11px] text-anton-muted uppercase tracking-wider">
-                Reasoning Budget
-              </span>
-              <input
-                type="number"
-                value={reasoningBudget}
-                onChange={(e) => setReasoningBudget(Number(e.target.value))}
-                min={1024}
-                max={64000}
-                className="bg-anton-card border border-anton-border rounded px-2 py-1 text-xs text-white w-24 focus:outline-none focus:border-anton-accent"
-              />
-            </label>
-            <label className="flex flex-col gap-1">
-              <span className="text-[11px] text-anton-muted uppercase tracking-wider">
-                Knowledge Base
-              </span>
-              <select
-                value={selectedKbId}
-                onChange={(e) => setSelectedKbId(e.target.value)}
-                className="bg-anton-card border border-anton-border rounded px-2 py-1 text-xs text-white focus:outline-none focus:border-anton-accent"
-              >
+            </div>
+            <div>
+              <div className="flex justify-between text-xs mb-1"><span className="text-anton-muted">Max Tokens</span><span className="text-anton-accent font-mono">{maxTokens.toLocaleString()}</span></div>
+              <input type="range" min={256} max={65536} step={256} value={maxTokens} onChange={(e) => setMaxTokens(Number(e.target.value))} />
+            </div>
+            <div>
+              <div className="flex justify-between text-xs mb-1"><span className="text-anton-muted flex items-center gap-1"><Brain size={12} className="text-purple-400" /> Reasoning</span><span className="text-purple-400 font-mono">{reasoningBudget === 0 ? "Off" : reasoningBudget.toLocaleString()}</span></div>
+              <input type="range" min={0} max={32000} step={500} value={reasoningBudget} onChange={(e) => setReasoningBudget(Number(e.target.value))} />
+            </div>
+            <div>
+              <label className="text-xs text-anton-muted mb-1 flex items-center gap-1"><BookOpen size={12} /> Knowledge Base</label>
+              <select value={selectedKbId || ""} onChange={(e) => setSelectedKbId(e.target.value || null)} className="w-full bg-anton-bg border border-anton-border rounded-lg px-3 py-2 text-white text-sm focus:outline-none focus:border-anton-accent">
                 <option value="">None</option>
-                {(state.knowledgeBases || []).map((kb) => (
-                  <option key={kb.id} value={kb.id}>
-                    {kb.name}
-                  </option>
-                ))}
+                {kbs.map((kb) => <option key={kb.id} value={kb.id}>{kb.name} ({kb.document_count} docs)</option>)}
               </select>
-            </label>
-          </div>
-        </div>
-      )}
-
-      {/* Messages */}
-      <div
-        ref={scrollContainerRef}
-        onScroll={handleContainerScroll}
-        className="flex-1 overflow-y-auto px-4 py-4 space-y-4"
-      >
-        {messages.map((m) => (
-          <MessageBubble key={m.id} message={m} chatId={chatId} />
-        ))}
-
-        {/* Streaming overlay — in-progress response */}
-        {streaming && (streamData.thinking || streamData.text) && (
-          <MessageBubble
-            message={{
-              id: "streaming",
-              role: "assistant",
-              content: streamData.text,
-              thinking_content: streamData.thinking || null,
-            }}
-            chatId={chatId}
-            isStreaming
-            isThinking={streamData.isThinking}
-          />
-        )}
-
-        {/* Waiting indicator — streaming started but no content yet */}
-        {streaming && !streamData.thinking && !streamData.text && (
-          <div className="flex items-center gap-2 text-anton-muted text-sm animate-pulse-slow pl-2">
-            <Loader2 size={14} className="animate-spin text-anton-accent" />
-            <span>Son of Anton is thinking...</span>
+            </div>
           </div>
         )}
-      </div>
-
-      {/* Scroll to bottom button */}
-      {!shouldAutoScrollRef.current && (
-        <div className="flex justify-center -mt-10 relative z-10">
-          <button
-            onClick={scrollToBottom}
-            className="bg-anton-card border border-anton-border rounded-full p-2 shadow-lg hover:border-anton-accent transition"
-          >
-            <ChevronDown size={16} className="text-anton-muted" />
-          </button>
-        </div>
-      )}
 
-      {/* Pending file previews */}
-      {pendingFiles.length > 0 && (
-        <div className="px-4 py-2 border-t border-anton-border bg-anton-surface/50">
-          <div className="flex flex-wrap gap-2">
-            {pendingFiles.map((file, idx) => (
-              <AttachmentPreview
-                key={`${file.name}-${idx}`}
-                file={file}
-                onRemove={() => handleRemovePendingFile(idx)}
-                isPending
-              />
+        {pendingFiles.length > 0 && (
+          <div className="mb-3 flex flex-wrap gap-2 animate-fade-in">
+            {pendingFiles.map((pf, i) => (
+              <div key={i} className="relative group bg-anton-card border border-anton-border rounded-lg overflow-hidden">
+                {pf.type === "image" && pf.preview ? (
+                  <img src={pf.preview} alt="" className="w-16 h-16 object-cover" />
+                ) : (
+                  <div className="w-16 h-16 flex flex-col items-center justify-center px-1">
+                    <FileText size={20} className="text-anton-muted mb-1" />
+                    <span className="text-[9px] text-anton-muted text-center truncate w-full">{pf.file.name.slice(0, 10)}</span>
+                  </div>
+                )}
+                <button onClick={() => removePending(i)} className="absolute -top-1 -right-1 w-5 h-5 bg-anton-danger rounded-full flex items-center justify-center text-white opacity-0 group-hover:opacity-100 transition-opacity"><X size={10} /></button>
+                <div className="absolute bottom-0 left-0 right-0 bg-black/60 text-[8px] text-white text-center py-0.5">{(pf.file.size / 1024).toFixed(0)}KB</div>
+              </div>
             ))}
           </div>
-        </div>
-      )}
-
-      {/* Input Area */}
-      <div className="border-t border-anton-border bg-anton-surface/80 backdrop-blur-sm p-4">
-        {uploadingFiles && (
-          <div className="flex items-center gap-2 text-anton-accent text-xs mb-2 animate-pulse">
-            <Loader2 size={12} className="animate-spin" />
-            Uploading files...
-          </div>
         )}
 
         <div className="flex items-end gap-2">
-          <FileUploadButton onFilesSelected={handleFilesSelected} />
-
+          <button onClick={toggleSettings} className={`p-2.5 rounded-xl transition shrink-0 ${showSettings ? "bg-anton-accent/20 text-anton-accent" : "text-anton-muted hover:text-white hover:bg-anton-card"}`}><Settings2 size={18} /></button>
+          <button onClick={() => fileRef.current?.click()} className={`p-2.5 rounded-xl transition shrink-0 ${pendingFiles.length ? "bg-green-500/20 text-green-400" : "text-anton-muted hover:text-white hover:bg-anton-card"}`} title="Attach files"><Paperclip size={18} /></button>
+          <input ref={fileRef} type="file" multiple className="hidden" accept="image/*,video/*,.pdf,.txt,.md,.py,.js,.ts,.jsx,.tsx,.cs,.java,.cpp,.c,.h,.go,.rs,.rb,.php,.html,.css,.json,.yaml,.yml,.xml,.toml,.csv,.sql,.sh,.swift,.kt,.lua,.dart,.vue,.svelte,.log" onChange={handleFileSelect} />
           <div className="flex-1 relative">
-            <textarea
-              ref={textareaRef}
-              value={input}
-              onChange={(e) => setInput(e.target.value)}
-              onKeyDown={handleKeyDown}
-              onPaste={handlePaste}
-              placeholder={
-                pendingFiles.length > 0
-                  ? "Add a message about the files, or just send..."
-                  : "Message Son of Anton..."
-              }
-              rows={1}
-              className="w-full bg-anton-card border border-anton-border rounded-xl px-4 py-3 pr-12 text-sm text-white placeholder-anton-muted resize-none focus:outline-none focus:border-anton-accent transition max-h-40 overflow-y-auto"
-              style={{
-                minHeight: "44px",
-                height: "auto",
-              }}
-              onInput={(e) => {
-                e.target.style.height = "auto";
-                e.target.style.height =
-                  Math.min(e.target.scrollHeight, 160) + "px";
-              }}
-            />
+            <textarea ref={inputRef} value={input} onChange={(e) => setInput(e.target.value)} onKeyDown={handleKeyDown} onPaste={handlePaste}
+              placeholder={pendingFiles.length ? "Add a message or send to analyze files…" : "Ask Son of Anton anything…"}
+              rows={1} style={{ maxHeight: "200px" }}
+              className="w-full bg-anton-card border border-anton-border rounded-xl px-4 py-3 text-white text-sm resize-none focus:outline-none focus:border-anton-accent transition"
+              onInput={(e) => { e.target.style.height = "auto"; e.target.style.height = Math.min(e.target.scrollHeight, 200) + "px"; }} />
           </div>
-
           {streaming ? (
-            <button
-              onClick={handleStop}
-              className="flex items-center justify-center w-10 h-10 rounded-xl bg-anton-danger/20 border border-anton-danger/40 text-anton-danger hover:bg-anton-danger/30 transition"
-              title="Stop generation"
-            >
-              <Square size={16} />
-            </button>
+            <button onClick={() => streamManager.abortStream(chatId)} className="p-2.5 rounded-xl bg-anton-danger text-white hover:opacity-80 transition shrink-0"><Square size={18} /></button>
           ) : (
-            <button
-              onClick={handleSend}
-              disabled={
-                (!input.trim() && pendingFiles.length === 0) ||
-                isChatStreaming ||
-                uploadingFiles
-              }
-              className="flex items-center justify-center w-10 h-10 rounded-xl bg-anton-accent text-white hover:bg-anton-accentDim transition disabled:opacity-30 disabled:cursor-not-allowed"
-              title="Send message"
-            >
-              <Send size={16} />
+            <button onClick={handleSend} disabled={(!input.trim() && !pendingFiles.length) || isStreamingGlobal || uploading}
+              className="p-2.5 rounded-xl bg-anton-accent text-white hover:opacity-80 transition shrink-0 disabled:opacity-30 disabled:cursor-not-allowed">
+              {uploading ? <Loader2 size={18} className="animate-spin" /> : <Send size={18} />}
             </button>
           )}
         </div>
 
-        <div className="flex items-center justify-between mt-2">
-          <span className="text-[10px] text-anton-muted">
-            {pendingFiles.length > 0 && (
-              <span className="text-anton-accent">
-                {pendingFiles.length} file{pendingFiles.length > 1 ? "s" : ""}{" "}
-                attached •{" "}
-              </span>
-            )}
-            Shift+Enter for new line • Paste or drag files to attach
-          </span>
-          <span className="text-[10px] text-anton-muted">
-            {Object.keys(state.activeStreams).length > 0 && (
-              <span className="text-anton-accent">
-                {Object.keys(state.activeStreams).length} active stream
-                {Object.keys(state.activeStreams).length > 1 ? "s" : ""}
-              </span>
-            )}
-          </span>
+        <div className="flex items-center gap-3 mt-2 text-[11px] text-anton-muted">
+          <span>{MODELS.find((m) => m.id === model)?.label}</span>
+          <span>•</span><span>{maxTokens.toLocaleString()} tokens</span>
+          {reasoningBudget > 0 && <><span>•</span><span className="text-purple-400">🧠 {reasoningBudget.toLocaleString()}</span></>}
+          {selectedKbId && <><span>•</span><span className="text-green-400">📚 RAG</span></>}
+          {pendingFiles.length > 0 && <><span>•</span><span className="text-blue-400">📎 {pendingFiles.length} file{pendingFiles.length !== 1 ? "s" : ""}</span></>}
+          {messages.some((m) => m.role === "assistant") && (
+            <button onClick={async () => { const all = messages.filter((m) => m.role === "assistant").map((m) => m.content).join("\n\n---\n\n"); if (all) try { await downloadZip(state.token, all); } catch {} }}
+              className="ml-auto hover:text-anton-accent transition">⬇ Download code</button>
+          )}
         </div>
       </div>
     </div>
   );
 }
-
-/** Classify a File object into a media type string */
-function classifyFile(file) {
-  if (file.type.startsWith("image/")) return "image";
-  if (file.type.startsWith("video/")) return "video";
-  if (
-    file.type === "application/pdf" ||
-    file.type.includes("word") ||
-    file.type.includes("excel") ||
-    file.type.includes("spreadsheet")
-  )
-    return "document";
-  if (file.type.startsWith("text/")) return "text";
-  return "unknown";
-} 
\ No newline at end of file

frontend/src/components/MessageBubble.jsx

@@ -2,227 +2,159 @@ import React, { useState } from "react";
 import ReactMarkdown from "react-markdown";
 import remarkGfm from "remark-gfm";
 import CodeBlock from "./CodeBlock";
-import AttachmentPreview from "./AttachmentPreview";
+import { getAttachmentUrl } from "../api";
 import {
-  User,
-  Flame,
-  Copy,
-  Check,
-  ChevronDown,
-  ChevronRight,
+  User, Flame, ChevronDown, ChevronRight, Brain, Copy, Check,
+  Image, Film, FileText, ExternalLink,
 } from "lucide-react";
 
-export default function MessageBubble({
-  message,
-  chatId,
-  isStreaming = false,
-  isThinking = false,
-}) {
-  const isUser = message.role === "user";
-  const [copied, setCopied] = useState(false);
+const FILE_TYPE_ICONS = {
+  image: Image, video: Film, document: FileText, text: FileText,
+};
+
+const MessageBubble = React.memo(function MessageBubble({ message, isStreaming, isThinking, token }) {
+  const { role, content, thinking_content, input_tokens, output_tokens, attachments } = message;
+  const isUser = role === "user";
   const [showThinking, setShowThinking] = useState(false);
+  const [copied, setCopied] = useState(false);
+  const [expandedImage, setExpandedImage] = useState(null);
 
   function handleCopy() {
-    navigator.clipboard.writeText(message.content || "");
+    navigator.clipboard.writeText(content || "");
     setCopied(true);
     setTimeout(() => setCopied(false), 2000);
   }
 
-  const attachments = message.attachments || [];
+  const hasAttachments = attachments && attachments.length > 0;
 
   return (
-    <div
-      className={`flex gap-3 animate-fade-in ${
-        isUser ? "justify-end" : "justify-start"
-      }`}
-    >
-      {/* Avatar — assistant only */}
+    <div className={`flex gap-3 animate-fade-in ${isUser ? "justify-end" : ""}`}>
       {!isUser && (
-        <div className="flex-shrink-0 w-8 h-8 rounded-lg bg-gradient-to-br from-anton-accent/20 to-transparent border border-anton-accent/20 flex items-center justify-center mt-1">
-          <Flame size={14} className="text-anton-accent" />
+        <div className="shrink-0 mt-1">
+          <div className="w-8 h-8 rounded-lg bg-gradient-to-br from-anton-accent to-red-600 flex items-center justify-center shadow-lg shadow-anton-accent/10">
+            <Flame size={16} className="text-white" />
+          </div>
         </div>
       )}
 
-      <div
-        className={`
-        max-w-[80%] rounded-2xl px-4 py-3 relative group
-        ${
-          isUser
-            ? "bg-anton-user border border-anton-border/50 text-white"
-            : "bg-anton-assistant border border-anton-border/30 text-anton-text"
-        }
-        ${isStreaming ? "border-anton-accent/30" : ""}
-      `}
-      >
-        {/* User attachments */}
-        {isUser && attachments.length > 0 && (
-          <div className="flex flex-wrap gap-1.5 mb-2">
-            {attachments.map((att, i) => (
-              <AttachmentPreview
-                key={att.id || i}
-                attachment={att}
-              />
-            ))}
-          </div>
-        )}
-
-        {/* Thinking block (collapsible) */}
-        {message.thinking_content && (
+      <div className={`max-w-[80%] ${isUser ? "order-first" : ""}`}>
+        {thinking_content && (
           <div className="mb-2">
-            <button
-              onClick={() => setShowThinking(!showThinking)}
-              className="flex items-center gap-1 text-[11px] text-anton-muted hover:text-anton-accent transition"
-            >
-              {showThinking ? (
-                <ChevronDown size={12} />
-              ) : (
-                <ChevronRight size={12} />
-              )}
-              {isThinking ? "Thinking..." : "Thought process"}
+            <button onClick={() => setShowThinking(!showThinking)}
+              className="flex items-center gap-1.5 text-xs text-purple-400 hover:text-purple-300 transition mb-1">
+              <Brain size={12} />
+              {showThinking ? <ChevronDown size={12} /> : <ChevronRight size={12} />}
+              {isThinking ? <span className="thinking-pulse">Reasoning…</span> : <span>View reasoning</span>}
             </button>
-            {showThinking && (
-              <div className="mt-1 pl-3 border-l-2 border-anton-accent/20 text-xs text-anton-muted leading-relaxed whitespace-pre-wrap">
-                {message.thinking_content}
+            {(showThinking || isThinking) && (
+              <div className="bg-purple-500/5 border border-purple-500/20 rounded-lg p-3 text-xs text-purple-300/80 font-mono whitespace-pre-wrap max-h-60 overflow-y-auto">
+                {thinking_content}
+                {isThinking && <span className="inline-block w-1.5 h-4 bg-purple-400 ml-0.5 animate-pulse" />}
               </div>
             )}
           </div>
         )}
 
-        {/* Thinking indicator during streaming */}
-        {isStreaming && isThinking && !message.thinking_content && (
-          <div className="flex items-center gap-2 text-xs text-anton-accent mb-2">
-            <div className="flex gap-1">
-              <span
-                className="w-1.5 h-1.5 bg-anton-accent rounded-full animate-bounce"
-                style={{ animationDelay: "0ms" }}
-              />
-              <span
-                className="w-1.5 h-1.5 bg-anton-accent rounded-full animate-bounce"
-                style={{ animationDelay: "150ms" }}
-              />
-              <span
-                className="w-1.5 h-1.5 bg-anton-accent rounded-full animate-bounce"
-                style={{ animationDelay: "300ms" }}
-              />
-            </div>
-            Thinking...
+        {hasAttachments && (
+          <div className="mb-2 flex flex-wrap gap-2">
+            {attachments.map((att) => {
+              const Icon = FILE_TYPE_ICONS[att.file_type] || FileText;
+              const url = getAttachmentUrl(att.id);
+              if (att.file_type === "image") {
+                return (
+                  <div key={att.id} className="relative group">
+                    <img src={`${url}?token=${token}`} alt={att.original_filename}
+                      className="max-w-[240px] max-h-[200px] rounded-lg border border-anton-border object-cover cursor-pointer hover:opacity-90 transition"
+                      onClick={() => setExpandedImage(expandedImage === att.id ? null : att.id)}
+                      onError={(e) => { e.target.style.display = "none"; }} />
+                    {expandedImage === att.id && (
+                      <div className="fixed inset-0 z-50 bg-black/80 flex items-center justify-center p-8 cursor-pointer"
+                        onClick={() => setExpandedImage(null)}>
+                        <img src={`${url}?token=${token}`} alt={att.original_filename}
+                          className="max-w-full max-h-full object-contain rounded-lg" />
+                      </div>
+                    )}
+                    <div className="absolute bottom-1 left-1 bg-black/60 text-[9px] text-white px-1.5 py-0.5 rounded">
+                      {att.original_filename}
+                    </div>
+                  </div>
+                );
+              }
+              return (
+                <a key={att.id} href={`${url}?token=${token}`} target="_blank" rel="noopener noreferrer"
+                  className="flex items-center gap-2 bg-anton-card border border-anton-border rounded-lg px-3 py-2 hover:border-anton-accent transition group">
+                  <Icon size={16} className="shrink-0 text-blue-400" />
+                  <div className="min-w-0">
+                    <div className="text-xs text-white truncate max-w-[160px]">{att.original_filename}</div>
+                    <div className="text-[10px] text-anton-muted">{(att.file_size / 1024).toFixed(0)}KB</div>
+                  </div>
+                  <ExternalLink size={12} className="text-anton-muted group-hover:text-anton-accent shrink-0" />
+                </a>
+              );
+            })}
           </div>
         )}
 
-        {/* Main content */}
-        {message.content && (
-          <div className="prose prose-invert prose-sm max-w-none break-words">
-            <ReactMarkdown
-              remarkPlugins={[remarkGfm]}
-              components={{
+        <div className={`rounded-2xl px-4 py-3 ${
+          isUser ? "bg-anton-accent text-white rounded-br-md" : "bg-anton-card border border-anton-border rounded-bl-md"
+        }`}>
+          {isUser ? (
+            <div className="text-sm whitespace-pre-wrap">{_stripPrefixes(content)}</div>
+          ) : (
+            <div className="prose-anton text-sm">
+              <ReactMarkdown remarkPlugins={[remarkGfm]} components={{
                 code({ node, inline, className, children, ...props }) {
                   const match = /language-(\S+)/.exec(className || "");
-                  const lang = match ? match[1] : "";
-
-                  if (!inline && (match || String(children).includes("\n"))) {
-                    // Extract filename from lang if format is "lang:path/to/file.ext"
-                    let language = lang;
-                    let filename = "";
-                    if (lang && lang.includes(":")) {
-                      const parts = lang.split(":");
-                      language = parts[0];
-                      filename = parts.slice(1).join(":");
-                    }
-
-                    return (
-                      <CodeBlock
-                        code={String(children).replace(/\n$/, "")}
-                        language={language}
-                        filename={filename}
-                      />
-                    );
+                  const rawLang = match?.[1] || "";
+                  if (inline) return <code className={className} {...props}>{children}</code>;
+                  let lang = rawLang, filename = null;
+                  if (rawLang.includes(":")) {
+                    const idx = rawLang.indexOf(":");
+                    lang = rawLang.slice(0, idx);
+                    filename = rawLang.slice(idx + 1);
                   }
-
-                  return (
-                    <code
-                      className="bg-anton-card px-1.5 py-0.5 rounded text-anton-accent text-[13px] font-mono"
-                      {...props}
-                    >
-                      {children}
-                    </code>
-                  );
-                },
-                // Style links
-                a({ children, ...props }) {
-                  return (
-                    <a
-                      className="text-anton-accent hover:underline"
-                      target="_blank"
-                      rel="noopener noreferrer"
-                      {...props}
-                    >
-                      {children}
-                    </a>
-                  );
-                },
-                // Style tables
-                table({ children }) {
-                  return (
-                    <div className="overflow-x-auto my-2">
-                      <table className="border-collapse border border-anton-border text-xs">
-                        {children}
-                      </table>
-                    </div>
-                  );
-                },
-                th({ children }) {
-                  return (
-                    <th className="border border-anton-border bg-anton-card px-3 py-1.5 text-left text-anton-text font-semibold">
-                      {children}
-                    </th>
-                  );
+                  return <CodeBlock language={lang} filename={filename} code={String(children).replace(/\n$/, "")} />;
                 },
-                td({ children }) {
-                  return (
-                    <td className="border border-anton-border px-3 py-1.5">
-                      {children}
-                    </td>
-                  );
-                },
-              }}
-            >
-              {message.content}
-            </ReactMarkdown>
-          </div>
-        )}
-
-        {/* Streaming cursor */}
-        {isStreaming && !isThinking && (
-          <span className="inline-block w-2 h-4 bg-anton-accent/70 animate-pulse ml-0.5 align-middle" />
-        )}
-
-        {/* Copy button — assistant messages only */}
-        {!isUser && message.content && !isStreaming && (
-          <div className="absolute -bottom-3 right-2 opacity-0 group-hover:opacity-100 transition">
-            <button
-              onClick={handleCopy}
-              className="flex items-center gap-1 text-[10px] text-anton-muted hover:text-white bg-anton-card border border-anton-border rounded-md px-2 py-0.5 shadow-lg"
-            >
-              {copied ? (
-                <>
-                  <Check size={10} className="text-anton-success" /> Copied
-                </>
-              ) : (
-                <>
-                  <Copy size={10} /> Copy
-                </>
+                pre({ children }) { return <>{children}</>; },
+              }}>
+                {content || ""}
+              </ReactMarkdown>
+              {isStreaming && !isThinking && (
+                <span className="inline-block w-1.5 h-4 bg-anton-accent ml-0.5 animate-pulse" />
               )}
+            </div>
+          )}
+        </div>
+
+        {!isUser && !isStreaming && content && (
+          <div className="flex items-center gap-3 mt-1.5 px-1">
+            <button onClick={handleCopy} className="flex items-center gap-1 text-[11px] text-anton-muted hover:text-white transition">
+              {copied ? <Check size={11} className="text-anton-success" /> : <Copy size={11} />}
+              {copied ? "Copied" : "Copy"}
             </button>
+            {(input_tokens > 0 || output_tokens > 0) && (
+              <span className="text-[11px] text-anton-muted">
+                {input_tokens?.toLocaleString()}↓ / {output_tokens?.toLocaleString()}↑ tokens
+              </span>
+            )}
           </div>
         )}
       </div>
 
-      {/* Avatar — user only */}
       {isUser && (
-        <div className="flex-shrink-0 w-8 h-8 rounded-lg bg-anton-card border border-anton-border flex items-center justify-center mt-1">
-          <User size={14} className="text-anton-muted" />
+        <div className="shrink-0 mt-1">
+          <div className="w-8 h-8 rounded-lg bg-anton-card border border-anton-border flex items-center justify-center">
+            <User size={16} className="text-anton-muted" />
+          </div>
         </div>
       )}
     </div>
   );
-}
+});
\ No newline at end of file
+
+function _stripPrefixes(text) {
+  if (!text) return "";
+  return text.replace(/^\[(?:Image|Video|Document|File):\s[^\]]*\]\n?/gm, "").trim();
+}
+
+export default MessageBubble;

frontend/src/streamManager.js

-/**
- * Son of Anton — Background Stream Manager
- *
- * Runs AI streams outside React component lifecycle.
- * Switching chats does NOT abort streams. Multiple chats
- * can stream simultaneously. Components subscribe to
- * per-chat updates via subscribe().
- */
-
 import { streamMessage } from "./api";
 
-// chatId -> { text, thinking, isThinking, abortController }
 const _streams = new Map();
-
-// chatId -> Set<() => void>
 const _listeners = new Map();
-
-// Store dispatch reference, set once from AppProvider
 let _dispatch = null;
 
-export function setDispatch(dispatch) {
-  _dispatch = dispatch;
-}
+export function setDispatch(dispatch) { _dispatch = dispatch; }
 
-/** Read current stream data for a chat (non-reactive, call from inside subscriber) */
 export function getStreamData(chatId) {
   const s = _streams.get(chatId);
   if (!s) return { streaming: false, text: "", thinking: "", isThinking: false };
-  return {
-    streaming: true,
-    text: s.text,
-    thinking: s.thinking,
-    isThinking: s.isThinking,
-  };
+  return { streaming: true, text: s.text, thinking: s.thinking, isThinking: s.isThinking };
 }
 
-/** Is this chat currently streaming? */
-export function isStreaming(chatId) {
-  return _streams.has(chatId);
-}
+export function isStreaming(chatId) { return _streams.has(chatId); }
 
-/** Is ANY chat currently streaming? (for UI indicators, NOT for blocking) */
-export function isAnyStreaming() {
-  return _streams.size > 0;
-}
-
-/** Subscribe to stream data changes for a specific chat. Returns unsubscribe fn. */
-export function subscribe(chatId, callback) {
+export function subscribe(chatId, cb) {
   if (!_listeners.has(chatId)) _listeners.set(chatId, new Set());
-  _listeners.get(chatId).add(callback);
-  return () => {
-    const set = _listeners.get(chatId);
-    if (set) {
-      set.delete(callback);
-      if (set.size === 0) _listeners.delete(chatId);
-    }
-  };
+  _listeners.get(chatId).add(cb);
+  return () => { const s = _listeners.get(chatId); if (s) { s.delete(cb); if (!s.size) _listeners.delete(chatId); } };
 }
 
-function _notify(chatId) {
-  const set = _listeners.get(chatId);
-  if (set) set.forEach((cb) => cb());
-}
+function _notify(id) { const s = _listeners.get(id); if (s) s.forEach((cb) => cb()); }
 
-/** Abort a running stream for a chat */
 export function abortStream(chatId) {
   const s = _streams.get(chatId);
-  if (s) {
-    s.abortController.abort();
-    _streams.delete(chatId);
-    _notify(chatId);
-    if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: false });
-  }
+  if (s) { s.abortController.abort(); _streams.delete(chatId); _notify(chatId); if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: false }); }
 }
 
-/**
- * Start a background stream for a chat.
- * If a stream already exists for this chat, it is aborted first.
- */
 export function startStream({ token, chatId, body }) {
-  // Abort existing stream for THIS chat only (other chats keep streaming)
-  if (_streams.has(chatId)) {
-    abortStream(chatId);
-  }
-
-  const abortController = new AbortController();
-  const streamState = {
-    text: "",
-    thinking: "",
-    isThinking: false,
-    abortController,
-  };
-  _streams.set(chatId, streamState);
-
+  if (_streams.has(chatId)) return;
+  const ac = new AbortController();
+  _streams.set(chatId, { text: "", thinking: "", isThinking: false, abortController: ac });
   if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: true });
   _notify(chatId);
 
-  // Fire and forget — runs independently of React
   (async () => {
+    const s = _streams.get(chatId);
+    if (!s) return;
+    let usage = {}, msgId = "";
     try {
-      const gen = streamMessage(token, chatId, body, abortController.signal);
-
-      for await (const event of gen) {
-        const s = _streams.get(chatId);
-        if (!s) break; // stream was aborted
-
-        if (event.type === "thinking") {
-          s.thinking += event.content || "";
-          s.isThinking = true;
-        } else if (event.type === "text") {
-          s.text += event.content || "";
-          s.isThinking = false;
-        } else if (event.type === "done") {
-          // Final message — add to store
-          if (_dispatch && event.message) {
-            _dispatch({
-              type: "ADD_MESSAGE",
-              chatId,
-              message: event.message,
-            });
-          }
-          // Auto-title
-          if (_dispatch && event.title) {
-            _dispatch({
-              type: "UPDATE_CHAT",
-              chat: { id: chatId, title: event.title },
-            });
-          }
-        } else if (event.type === "error") {
-          s.text += `\n\n**Error:** ${event.content || "Unknown error"}`;
+      for await (const evt of streamMessage(token, chatId, body, ac.signal)) {
+        if (ac.signal.aborted || !_streams.has(chatId)) break;
+        switch (evt.type) {
+          case "thinking_start": s.isThinking = true; _notify(chatId); break;
+          case "thinking_delta": s.thinking += evt.content; _notify(chatId); break;
+          case "thinking_end": s.isThinking = false; _notify(chatId); break;
+          case "text_delta": s.text += evt.content; _notify(chatId); break;
+          case "usage": usage = { input_tokens: evt.input_tokens, output_tokens: evt.output_tokens }; break;
+          case "title_update": if (_dispatch) _dispatch({ type: "UPDATE_CHAT", chat: { id: chatId, title: evt.title } }); break;
+          case "done": msgId = evt.message_id; break;
+          case "error": s.text += `\n\n**Error:** ${evt.message}`; _notify(chatId); break;
         }
-
-        _notify(chatId);
+      }
+      if (!ac.signal.aborted && _dispatch) {
+        _dispatch({ type: "ADD_MESSAGE", chatId, message: {
+          id: msgId || `gen-${Date.now()}`, role: "assistant", content: s.text,
+          thinking_content: s.thinking || null, input_tokens: usage.input_tokens || 0,
+          output_tokens: usage.output_tokens || 0, created_at: new Date().toISOString(), attachments: [],
+        }});
       }
     } catch (err) {
-      if (err.name !== "AbortError") {
-        const s = _streams.get(chatId);
-        if (s) {
-          s.text += `\n\n**Stream error:** ${err.message}`;
-          _notify(chatId);
-        }
+      if (!ac.signal.aborted && _dispatch) {
+        _dispatch({ type: "ADD_MESSAGE", chatId, message: {
+          id: `err-${Date.now()}`, role: "assistant", content: `**Error:** ${err.message}`,
+          created_at: new Date().toISOString(), attachments: [],
+        }});
       }
     } finally {
-      _streams.delete(chatId);
-      _notify(chatId);
+      _streams.delete(chatId); _notify(chatId);
       if (_dispatch) _dispatch({ type: "SET_STREAMING", chatId, streaming: false });
     }
   })();
-}
+}
\ No newline at end of file