Fix bank config API for multi-tenant schema isolation (#417)

* Fix bank config API for multi-tenant schema isolation

- Use fq_table() in config_resolver.py to schema-qualify bank table queries
- Add authenticate_and_resolve_schema() to bank config API handlers in http.py

Without these fixes, bank config operations in multi-tenant mode hit
public.banks instead of tenant_xxx.banks, causing "column config does
not exist" errors.

* Fix method name: _authenticate_tenant not authenticate_and_resolve_schema

The MemoryEngine method is _authenticate_tenant(), not
authenticate_and_resolve_schema(). This was causing AttributeError
on all bank config API requests.

hindsight-api/hindsight_api/api/http.py

@@ -3485,6 +3485,9 @@ def _register_routes(app: FastAPI):
                 detail="Bank configuration API is disabled. Set HINDSIGHT_API_ENABLE_BANK_CONFIG_API=true to enable.",
             )
         try:
+            # Authenticate and set schema context for multi-tenant DB queries
+            await app.state.memory._authenticate_tenant(request_context)
+
             # Get resolved config from config resolver
             config_dict = await app.state.memory._config_resolver.get_bank_config(bank_id, request_context)
 
@@ -3520,6 +3523,9 @@ def _register_routes(app: FastAPI):
                 detail="Bank configuration API is disabled. Set HINDSIGHT_API_ENABLE_BANK_CONFIG_API=true to enable.",
             )
         try:
+            # Authenticate and set schema context for multi-tenant DB queries
+            await app.state.memory._authenticate_tenant(request_context)
+
             # Update config via config resolver (validates configurable fields and permissions)
             await app.state.memory._config_resolver.update_bank_config(bank_id, request.updates, request_context)
 
@@ -3557,6 +3563,9 @@ def _register_routes(app: FastAPI):
                 detail="Bank configuration API is disabled. Set HINDSIGHT_API_ENABLE_BANK_CONFIG_API=true to enable.",
             )
         try:
+            # Authenticate and set schema context for multi-tenant DB queries
+            await app.state.memory._authenticate_tenant(request_context)
+
             # Reset config via config resolver
             await app.state.memory._config_resolver.reset_bank_config(bank_id)
 

hindsight-api/hindsight_api/config_resolver.py

@@ -16,6 +16,7 @@ from typing import Any
 import asyncpg
 
 from hindsight_api.config import HindsightConfig, _get_raw_config, normalize_config_dict
+from hindsight_api.engine.memory_engine import fq_table
 from hindsight_api.extensions.tenant import TenantExtension
 from hindsight_api.models import RequestContext
 
@@ -149,8 +150,8 @@ class ConfigResolver:
         try:
             async with self.pool.acquire() as conn:
                 row = await conn.fetchrow(
-                    """
-                    SELECT config FROM banks WHERE bank_id = $1
+                    f"""
+                    SELECT config FROM {fq_table("banks")} WHERE bank_id = $1
                     """,
                     bank_id,
                 )
@@ -241,8 +242,8 @@ class ConfigResolver:
         # Merge with existing config (JSONB || operator)
         async with self.pool.acquire() as conn:
             await conn.execute(
-                """
-                UPDATE banks
+                f"""
+                UPDATE {fq_table("banks")}
                 SET config = config || $1::jsonb,
                     updated_at = now()
                 WHERE bank_id = $2
@@ -262,9 +263,9 @@ class ConfigResolver:
         """
         async with self.pool.acquire() as conn:
             await conn.execute(
-                """
-                UPDATE banks
-                SET config = '{}'::jsonb,
+                f"""
+                UPDATE {fq_table("banks")}
+                SET config = '{{}}'::jsonb,
                     updated_at = now()
                 WHERE bank_id = $1
                 """,