refactor: rename source dir to bin, reorganize templates, remove personal info

- Rename myclaude/ source directory → bin/
- Update all Python imports (myclaude.* → bin.*) and mock patch paths
- Update pyproject.toml: entry point and packages config
- Move workspace_template/ → templates/workspace/ for future extensibility
- Migrate .claude/skills/ to global ~/.claude/skills/ and remove local copies
- Remove SessionStart hook (sync-global.sh) from settings.local.json
- Remove unrelated script rename_funcs_to_snake.py
- Remove personal info (name, org, paths) from CLAUDE.md, README.md, settings
- Update .gitignore with standard Python/runtime exclusions
- Clean .DS_Store, __pycache__, .mypy_cache, .pytest_cache, .ruff_cache,
  .playwright-mcp runtime files

templates/workspace/.gitignore

@@ -0,0 +1,27 @@
+# Temporary files
+tmp/
+*.tmp
+*.bak
+*.log
+
+# macOS
+.DS_Store
+
+# Editor
+*.swp
+*.swo
+*~
+.vscode/
+.idea/
+
+# Download artifacts
+*.zip
+*.tar.gz
+
+# Node
+node_modules/
+
+# Python
+__pycache__/
+*.pyc
+.venv/