docs(subscriptions): update architecture map for member.activated sync

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/architecture-maps/Subscriptions.md

 # Subscriptions Module — Architecture Map
 
-> **Last updated:** 2026-07-18 (added SubscriptionSyncService — real-time dependent sync on activation events)
+> **Last updated:** 2026-07-18 (added syncForMember + member.activated listener; production backfill of missing 2026/2027 rows)
 > **Status:** Living document — incrementally updated as new information is discovered
 
 ---
@@ -135,19 +135,28 @@ service codes. All 204 initially generated subscriptions had `base_amount=0.00`.
 2. Hard-coded fallback rates as last resort: member/spouse=492, child/temporary=222
 3. All 204 bad rows manually corrected via UPDATE on production DB.
 
-### 5.1b Real-Time Dependent Sync (SubscriptionSyncService) — Added 2026-07-18
+### 5.1b Real-Time Member + Dependent Sync (SubscriptionSyncService) — Added 2026-07-18
 
-When a spouse, child, or temporary member is activated (either immediately because fee=0, or
-after the Cashier processes their addition fee), a subscription row for the **current financial
-year** is automatically inserted for them.
+When a member activates or a dependent is added, subscription rows are automatically inserted
+for the **current financial year**. Two entry points in the service:
+
+#### `syncForMember(memberId)` — called on `member.activated`
+Creates the member's own FY subscription row plus all currently-active dependents.
+Used when a brand-new member activates mid-year (after the July batch already ran).
+
+#### `syncForDependent(personType, personId, memberId)` — called on dependent activation
+Adds a single dependent's FY row. Used when a dependent is added to an already-active member.
 
 ```
-Trigger A — fee paid path (Cashier dispatches):
-  spouse.fee_paid   → SubscriptionSyncService::syncForDependent('spouse', $spouseId, $memberId)
-  child.fee_paid    → SubscriptionSyncService::syncForDependent('child',  $childId,  $memberId)
-  temporary.fee_paid→ SubscriptionSyncService::syncForDependent('temporary', $tempId, $memberId)
+Triggers (all in Subscriptions/bootstrap.php):
+
+  member.activated          → syncForMember(memberId)
+                              — creates member row + all active dependents
+
+  spouse.fee_paid           → syncForDependent('spouse', spouseId, memberId)
+  child.fee_paid            → syncForDependent('child',  childId,  memberId)
+  temporary.fee_paid        → syncForDependent('temporary', tempId, memberId)
 
-Trigger B — zero-fee path (controller dispatches *.added with fee=0):
   spouse.added   (fee=0)   → syncForDependent('spouse', ...)
   child.added    (fee=0)   → syncForDependent('child', ...)
   temporary.added(fee=0)   → syncForDependent('temporary', ...)
@@ -164,6 +173,10 @@ syncForDependent logic:
 
 **Idempotent:** safe to re-fire; the dedup guard prevents double rows.
 
+**Production backfill (2026-07-18):** 5 rows were created manually via targeted script
+(2 member rows + 2 child rows + 1 temp row). Remaining gaps in audit were all explained
+by ineligible members (archived, deceased, waived, not yet active).
+
 ### 5.2 Subscription Payment (with FIFO enforcement)
 
 ```