docs: mark as Phase 2 per design research conclusions

fix: update Discord invite link to working permanent URL

sync oxlint to v1.53

fix: log WebSocket errors that occur after authentication

fix: add error handling to all skill tool executors

docs: add CI badge to README

chore: remove unused beforeEach import in tools.test.ts

test: add unit tests for all 5 skill tools (19 new tests)

fix: remove unused vi import in config test

chore: standardize .gitignore entries

ci: add GitHub Actions CI workflow

chore: add MIT LICENSE file

feat: implement Home Assistant integration with device discovery and SOUL generation

docs: add integration architecture and device summon flow diagrams

Initial commit