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

README.md

@@ -1,6 +1,6 @@
 ![cAIc banner](static/readme-banner.png)
 
-# cAIc v1.0.0
+# cAIc v1.1.0
 
 **Cluster AI coordinator — heterogeneous GPU inference for homelab AI clusters.**
 
@@ -60,6 +60,7 @@ A worker with a slow GPU still contributes — it handles less latency-sensitive
 - **At-rest encryption** — AES-256-GCM on all query-derived text in SQLite and Qdrant
 - **IDE integration** — OpenAI-compatible `/v1/chat/completions` endpoint for Continue.dev and friends
 - **OpenAI-compat FIM** — `/v1/fim/completions` for code completion
+- **Image generation** — ComfyUI-backed image gen via cluster workers (Stable Diffusion / Flux)
 - **6 color themes** — IBM Blue, Matrix, Dark, Light, Amber, Trippin
 - **Docker-ready** — `docker compose up -d` and you're running
 
@@ -155,6 +156,21 @@ Gitea (primary): `ssh://gitea@llgit.llamachile.tube:1319/gramps/caic.git`
 
 ---
 
+## What's New in v1.1.0
+
+### Image Generation Service
+- `POST /api/image/generate` — proxy endpoint routes to ComfyUI on cluster workers
+- `GET /api/image/status` — lists available image gen nodes
+- Node agent auto-detects ComfyUI and registers `image_gen` capability
+- Full ComfyUI workflow: CheckpointLoader → KSampler → VAEDecode → SaveImage
+- Cluster AMQP protocol extended: `cmd.image_generate`, `image_generated`, `image_failed`
+- Hardware probe checks ComfyUI reachability + checkpoint model list
+- 27 new tests covering cluster handlers, router proxy, node agent, hardware, capability detection
+
+### Bug Fixes & Hardening
+- Hardware assessment now probes ComfyUI alongside llama-server, Qdrant, SearXNG
+- Node agent config extended with `comfyui_port` (default 8188)
+
 ## What's New in v1.0.0
 
 ### Docker Containerization (B3)