fix(engine): sync migration URL and assorted engine fixes

Recovered from the 2026-06-27 snapshot import by classifying the base..snapshot delta at line granularity. Upstream base: d054b884 (2026-04-10).

hindsight-api-slim/hindsight_api/engine/memory_engine.py

@@ -1734,11 +1734,13 @@ class MemoryEngine(MemoryEngineInterface):
 
                 # Ensure embedding column dimension matches the model's dimension
                 # This is done after migrations and after embeddings.initialize()
+                # Use migration URL (sync driver) when available, fallback to main URL
+                _sync_url = config.migration_database_url or self.db_url
                 for tenant in tenants:
                     schema = tenant.schema
                     if schema:
                         ensure_embedding_dimension(
-                            self.db_url,
+                            _sync_url,
                             self.embeddings.dimension,
                             schema=schema,
                             vector_extension=config.vector_extension,
@@ -1748,14 +1750,14 @@ class MemoryEngine(MemoryEngineInterface):
                 for tenant in tenants:
                     schema = tenant.schema
                     if schema:
-                        ensure_vector_extension(self.db_url, vector_extension=config.vector_extension, schema=schema)
+                        ensure_vector_extension(_sync_url, vector_extension=config.vector_extension, schema=schema)
 
                 # Ensure text search columns/indexes match the configured extension
                 for tenant in tenants:
                     schema = tenant.schema
                     if schema:
                         ensure_text_search_extension(
-                            self.db_url, text_search_extension=config.text_search_extension, schema=schema
+                            _sync_url, text_search_extension=config.text_search_extension, schema=schema
                         )
 
         logger.info(f"Connecting to PostgreSQL at {mask_network_location(self.db_url)}")

hindsight-api-slim/hindsight_api/engine/retain/fact_storage.py

@@ -67,6 +67,9 @@ async def insert_facts_batch(
     tags_list = []
     observation_scopes_list = []
     text_signals_list = []
+    rooms_list = []
+    halls_list = []
+    layers_list = []
 
     for fact in facts:
         fact_texts.append(_sanitize_text(fact.fact_text))
@@ -120,7 +123,8 @@ async def insert_facts_batch(
             WITH input_data AS (
                 SELECT * FROM unnest(
                     $2::text[], $3::vector[], $4::timestamptz[], $5::timestamptz[], $6::timestamptz[], $7::timestamptz[],
-                    $8::text[], $9::text[], $10::jsonb[], $11::text[], $12::text[], $13::jsonb[], $14::jsonb[], $15::text[]
+                    $8::text[], $9::text[], $10::jsonb[], $11::text[], $12::text[], $13::jsonb[], $14::jsonb[], $15::text[],
+                    $16::text[], $17::text[], $18::text[]
                 ) AS t(text, embedding, event_date, occurred_start, occurred_end, mentioned_at,
                        context, fact_type, metadata, chunk_id, document_id, tags_json,
                        observation_scopes_json, text_signals, room, hall, layer)
@@ -155,7 +159,8 @@ async def insert_facts_batch(
             WITH input_data AS (
                 SELECT * FROM unnest(
                     $2::text[], $3::vector[], $4::timestamptz[], $5::timestamptz[], $6::timestamptz[], $7::timestamptz[],
-                    $8::text[], $9::text[], $10::jsonb[], $11::text[], $12::text[], $13::jsonb[], $14::jsonb[], $15::text[]
+                    $8::text[], $9::text[], $10::jsonb[], $11::text[], $12::text[], $13::jsonb[], $14::jsonb[], $15::text[],
+                    $16::text[], $17::text[], $18::text[]
                 ) AS t(text, embedding, event_date, occurred_start, occurred_end, mentioned_at,
                        context, fact_type, metadata, chunk_id, document_id, tags_json,
                        observation_scopes_json, text_signals, room, hall, layer)
@@ -197,6 +202,9 @@ async def insert_facts_batch(
         tags_list,
         observation_scopes_list,
         text_signals_list,
+        rooms_list,
+        halls_list,
+        layers_list,
     )
 
     unit_ids = [str(row["id"]) for row in results]

hindsight-api-slim/hindsight_api/engine/search/retrieval.py

@@ -207,6 +207,9 @@ async def retrieve_semantic_bm25_combined(
             f"   AND (1 - (embedding <=> $1::vector)) >= 0.3"
             f"   {tags_clause}"
             f"   {groups_clause}"
+            f"   {room_clause}"
+            f"   {hall_clause}"
+            f"   {layer_clause}"
             f" ORDER BY embedding <=> $1::vector"
             f" LIMIT {hnsw_fetch})"
         )
@@ -247,6 +250,9 @@ async def retrieve_semantic_bm25_combined(
                 f"   {bm25_where_filter}"
                 f"   {tags_clause}"
                 f"   {groups_clause}"
+                f"   {room_clause}"
+                f"   {hall_clause}"
+                f"   {layer_clause}"
                 f" ORDER BY {bm25_order_by}"
                 f" LIMIT $3)"
             )
@@ -260,6 +266,9 @@ async def retrieve_semantic_bm25_combined(
     if tags:
         params.append(tags)
     params.extend(groups_params)
+    params.extend(room_params)
+    params.extend(hall_params)
+    params.extend(layer_params)
 
     rows = await conn.fetch(query, *params)
 
@@ -358,6 +367,9 @@ async def retrieve_temporal_combined(
     if tags:
         params.append(tags)
     params.extend(groups_params)
+    params.extend(room_params_list)
+    params.extend(hall_params_list)
+    params.extend(layer_params_list)
 
     # Two-phase entry point query:
     # Phase 1 (date_ranked): rank by date only — no embedding computation — for all units in
@@ -389,6 +401,9 @@ async def retrieve_temporal_combined(
               )
               {tags_clause}
               {groups_clause}
+              {room_clause}
+              {hall_clause}
+              {layer_clause}
         ),
         sim_ranked AS (
             SELECT mu.id, mu.text, mu.context, mu.event_date, mu.occurred_start, mu.occurred_end, mu.mentioned_at, mu.fact_type, mu.proof_count, mu.document_id, mu.chunk_id, mu.tags, mu.metadata, mu.room, mu.hall, mu.layer,

hindsight-api-slim/hindsight_api/models.py

@@ -296,6 +296,8 @@ class Bank(Base):
     updated_at: Mapped[datetime] = mapped_column(TIMESTAMP(timezone=True), server_default=func.now())
 
     __table_args__ = (Index("idx_banks_bank_id", "bank_id"),)
+
+
 class Tunnel(Base):
     """Cross-bank memory bridges — links between concepts in different banks (ADR-145 RCLL)."""