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

config.py

@@ -10,7 +10,7 @@ from pathlib import Path
 
 log = logging.getLogger("caic")
 
-VERSION = "v1.0.0"
+VERSION = "v1.1.0"
 OLLAMA_BASE = os.environ.get("OLLAMA_BASE", "http://localhost:11434")
 LLAMA_SERVER_BASE = os.environ.get("LLAMA_SERVER_BASE", "http://localhost:8081")
 SEARXNG_BASE = os.environ.get("CAIC_SEARXNG_BASE", "http://localhost:8888")
@@ -52,6 +52,10 @@ TRUST_X_FORWARDED_FOR = (
     os.getenv("CAIC_TRUST_X_FORWARDED_FOR", "false").lower() == "true"
 )
 
+# --- Image generation (ComfyUI) ---
+COMFYUI_BASE = os.environ.get("CAIC_COMFYUI_BASE", "http://192.168.50.115:8188")
+COMFYUI_TIMEOUT = int(os.environ.get("CAIC_COMFYUI_TIMEOUT", "120"))
+
 # --- Rate limits ---
 RATE_WINDOW_SECONDS = 60
 RL_LOGIN_PER_WINDOW = 10