feat(agent): support Responses steering and project-aware tools

Use the dedicated TJWATER_AGENT_URL and Responses stream protocol. Keep running
turns active while users steer or queue follow-ups and edit pending delivery.
Refresh the model catalog before generation and preserve approval mode selection.

Integrate scoped investigation messaging/presentation, geographic place selection,
current Agent composer styles and supporting workbench contracts.

Validation: 77 focused Vitest checks, 21 browser cases, lint, typecheck and
production build. Preserve direct Server/Agent routing and project authentication.

docker-entrypoint.sh

@@ -10,7 +10,7 @@ runtime_config=$(jq -cn \
   --arg mapUrl "${TJWATER_MAP_URL:-https://geoserver.waternetwork.cn/geoserver}" \
   --arg geoserverWorkspace "${TJWATER_GEOSERVER_WORKSPACE:-tjwater_next}" \
   --arg serverApiBaseUrl "${TJWATER_SERVER_API_BASE_URL:-http://127.0.0.1:8000}" \
-  --arg agentApiBaseUrl "${TJWATER_AGENT_API_BASE_URL:-http://127.0.0.1:8787}" \
+  --arg agentApiBaseUrl "${TJWATER_AGENT_URL:-http://127.0.0.1:8787}" \
   --arg workbenchRuntimeMode "${TJWATER_WORKBENCH_RUNTIME_MODE:-auto}" \
   --arg peripheralSampleApiBaseUrl "${TJWATER_PERIPHERAL_SAMPLE_API_BASE_URL:-}" \
   --arg peripheralSampleTimeMode "${TJWATER_PERIPHERAL_SAMPLE_TIME_MODE:-demo}" \
@@ -28,7 +28,7 @@ runtime_config=$(jq -cn \
     TJWATER_MAP_URL: $mapUrl,
     TJWATER_GEOSERVER_WORKSPACE: $geoserverWorkspace,
     TJWATER_SERVER_API_BASE_URL: $serverApiBaseUrl,
-    TJWATER_AGENT_API_BASE_URL: $agentApiBaseUrl,
+    TJWATER_AGENT_URL: $agentApiBaseUrl,
     TJWATER_WORKBENCH_RUNTIME_MODE: $workbenchRuntimeMode,
     TJWATER_PERIPHERAL_SAMPLE_API_BASE_URL: $peripheralSampleApiBaseUrl,
     TJWATER_PERIPHERAL_SAMPLE_TIME_MODE: $peripheralSampleTimeMode,