feat(wisekeep): rename transcriber app to wisekeep

Rebranding the transcriber application to better reflect its purpose:
AI-powered wisdom extraction from video content.

Changes:
- Renamed folder: apps/transcriber → apps/wisekeep
- Updated all package names to @wisekeep/* namespace:
  - @wisekeep/backend
  - @wisekeep/web
  - @wisekeep/landing
  - @wisekeep/mobile
  - @wisekeep/shared-types
- Updated root package.json scripts:
  - wisekeep:dev, dev:wisekeep:backend, dev:wisekeep:web, etc.
- Updated documentation in CLAUDE.md files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/wisekeep/.gitignore

@@ -0,0 +1,53 @@
+# Python (legacy)
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+venv/
+env/
+ENV/
+
+# Data (transcripts, playlists)
+data/
+
+# Node
+node_modules/
+.npm
+dist/
+build/
+.astro/
+.svelte-kit/
+.turbo/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+.DS_Store
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Build outputs
+apps/*/dist/
+apps/*/.astro/
+apps/*/.svelte-kit/
+
+# Expo
+apps/mobile/.expo/
+apps/mobile/ios/
+apps/mobile/android/
+
+# Legacy
+legacy/venv/
+legacy/__pycache__/