feat: OpenClaw HTTP bridge, HA conversation agent fixes, voice pipeline tooling

- Add openclaw-http-bridge.py: HTTP server translating POST requests to OpenClaw CLI calls
- Add launchd plist for HTTP bridge (port 8081, auto-start)
- Add install-to-docker-ha.sh: deploy custom component to Docker HA via SSH
- Add package-for-ha.sh: create distributable tarball of custom component
- Add test-services.sh: comprehensive voice pipeline service checker

Fixes from code review:
- Use OpenClawAgent (HTTP) in async_setup_entry instead of OpenClawCLIAgent
  (CLI agent fails inside Docker HA where openclaw binary doesn't exist)
- Update all port references from 8080 to 8081 (HTTP bridge port)
- Remove overly permissive CORS headers from HTTP bridge
- Fix zombie process leak: kill child process on CLI timeout
- Remove unused subprocess import in conversation.py
- Add version field to Kokoro TTS Wyoming info
- Update TODO.md with voice pipeline progress

TODO.md

@@ -44,10 +44,12 @@
 - [x] Write + load openWakeWord launchd plist (`com.homeai.wakeword`) — DISABLED, replaced by Wyoming satellite
 - [x] Write `wyoming/test-pipeline.sh` — smoke test (3/3 passing)
 - [x] Install Wyoming satellite — handles wake word via HA voice pipeline
-- [x] Connect Home Assistant Wyoming integration (STT + TTS + Satellite)
 - [x] Install Wyoming satellite for Mac Mini (port 10700)
-- [ ] Create HA Voice Assistant pipeline with OpenClaw conversation agent
+- [x] Write OpenClaw conversation custom component for Home Assistant
+- [~] Connect Home Assistant Wyoming integration (STT + TTS + Satellite) — ready to configure in HA UI
+- [~] Create HA Voice Assistant pipeline with OpenClaw conversation agent — component ready, needs HA UI setup
 - [ ] Test HA Assist via browser: type query → hear spoken response
+- [ ] Test full voice loop: wake word → STT → OpenClaw → TTS → audio playback
 - [ ] Install Chatterbox TTS (MPS build), test with sample `.wav`
 - [ ] Install Qwen3-TTS via MLX (fallback)
 - [ ] Train custom wake word using character name