feat(skills): add use-local-whisper skill package (#702)

Thanks for the great contribution @glifocat! This is a really well-structured skill — clean package, thorough docs, and solid test coverage. Hope to see more skills like this from you!

.claude/skills/add-voice-transcription/modify/src/channels/whatsapp.test.ts

@@ -90,6 +90,10 @@ vi.mock('@whiskeysockets/baileys', () => {
       timedOut: 408,
       restartRequired: 515,
     },
+    fetchLatestWaWebVersion: vi
+      .fn()
+      .mockResolvedValue({ version: [2, 3000, 0] }),
+    normalizeMessageContent: vi.fn((content: unknown) => content),
     makeCacheableSignalKeyStore: vi.fn((keys: unknown) => keys),
     useMultiFileAuthState: vi.fn().mockResolvedValue({
       state: {