refactor: Extract command handlers and improve test coverage

Major refactoring to improve code organization and testability:

Command Handler Extraction:
- Create lib/command-handlers.js with dependency injection pattern
- Extract 19 commands: playback (9), queue (5), volume (2), search (3)
- Reduce index.js by ~500 lines

Queue Utilities:
- Create lib/queue-utils.js for sorting and track utilities
- Extract pure functions for better testability

Test Infrastructure:
- Add comprehensive mocks for Sonos, Slack, Discord, Spotify
- New test files: auth-handler, command-handlers, discord,
  queue-utils, setconfig, slack
- Expand voting.test.mjs with direct module tests
- Total: 511 unit tests passing

Integration Tests:
- Expand from 21 to 70 integration tests
- Add pre-flight checks for clean state validation
- Add queue verification before/after modifications
- Keep volume safe (max 20, reset to 5)
- Fix all validators to match actual bot responses

Bug Fixes:
- Fix votecheck to show track metadata when track leaves queue
- Store track title/artist when votes are cast

Author: htilly

.github/workflows/feature-request-enhance.yml

@@ -246,4 +246,8 @@ jobs:
               -H "Accept: application/vnd.github+json" \
               -H "Content-Type: application/json" \
               -d @- \
+<<<<<<< HEAD
               "https://api.github.com/repos/${{ github.repository }}/issues/$ISSUE_NUMBER/comments"
+=======
+              "https://api.github.com/repos/${{ github.repository }}/issues/$ISSUE_NUMBER/comments"
+>>>>>>> origin/master

app.manifest.json

@@ -60,3 +60,6 @@
 
 
 
+
+
+

docs/DISCORD_DISCOVERY_CONTENT.md

@@ -113,3 +113,6 @@ Join our Discord server for:
 
 
 
+
+
+