Add Share Inbox flow for unresolved WhatsApp imports

docs/SETUP.md

@@ -96,10 +96,14 @@ Behavior notes:
 
 - iOS/Android: integrates with share-intent plugin (`receive_sharing_intent`)
 - shared text is parsed and ingested into:
-  - person profile (auto-create when unresolved)
+  - person profile (auto-create when identity is confident)
   - source->profile link map for follow-up matching
   - moment history (`type=whatsapp`)
-- Settings includes `Simulate WhatsApp Share` action for local/dev testing.
+- ambiguous or missing-identity shares are queued in `Share Inbox` for manual
+  resolution
+- Settings includes:
+  - `Simulate WhatsApp Share` for local/dev testing
+  - `Open Share Inbox` to resolve queued items
 
 ## Local Persistence Backend