feat(enhance): discard, tests against a mock ComfyUI, docs (#192)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -7,6 +7,7 @@ database/target
 .env
 # Server-local LLM config (llm.example.toml is the template)
 /llm.toml
+/enhance.toml
 # Server-local TTS pronunciation overrides (tts_pronunciations.example.json is the template)
 /tts_pronunciations.json
 /tmp