chore: finalize v1.9.0

capabilities/llama-cpp/capability.json

@@ -1,7 +1,7 @@
 {
   "id": "llama-cpp",
   "role": "reviewer",
-  "version": "1.8.0",
+  "version": "1.9.0",
   "title": "llama.cpp",
   "description": "llama.cpp server — cross-AI /gsd:review reviewer lane only; not a GSD install target (no runtime body, no artifacts). OpenAI-compatible HTTP transport against a user-configured `review.llama_cpp_host` (POST /v1/chat/completions); model discovered via GET /v1/models piped through jq. Capability id/folder are kebab (`llama-cpp`, required by KEBAB_RE); `reviewer.slug` stays snake (`llama_cpp`) to match the shipped roster and the `review.llama_cpp_host` config key (ADR-2782's three-namespace trap).",
   "tier": "full",