feat: image generation service — ComfyUI cluster integration

- POST /api/image/generate proxy endpoint (admin required)
- GET /api/image/status lists available image gen nodes
- Cluster AMQP protocol: cmd.image_generate, image_generated, image_failed
- Node agent auto-detects ComfyUI, registers image_gen capability
- ComfyUI workflow builder: CheckpointLoader → KSampler → VAEDecode → SaveImage
- Hardware probe checks ComfyUI reachability + checkpoint model list
- 27 tests covering cluster handlers, router, node agent, hardware, capabilities
- Config: CAIC_COMFYUI_BASE, CAIC_COMFYUI_TIMEOUT, comfyui_port in agent.ini
- Version bump to v1.1.0
- Documentation: ai.md, wiki/Developer-Architecture.md, current-wip.md, README.md, .env.example

app.py

@@ -41,6 +41,7 @@ import routers.ingest as ingest
 import routers.hardware as hardware
 import routers.rag_admin as rag_admin
 import routers.cluster as cluster_router
+import routers.image as image_router
 
 # --- Logging ---
 log = logging.getLogger("caic")
@@ -177,7 +178,7 @@ for router_module in [
     auth_router, conversations.router, memories.router, models.router,
     presets.router, profile.router, settings.router, skills.router,
     chat.router, search_route.router, completions.router, upload.router, ingest.router, hardware.router,
-    rag_admin.router, cluster_router.router,
+    rag_admin.router, cluster_router.router, image_router.router,
 ]:
     app.include_router(router_module)