chore: organize repo as uv workspace multi-MCP monorepo

Layout stile CerberoSuite/Cerbero:
- services/ per MCP workspace members (futuri: mcp-docugen, mcp-convert, mcp-inbox)
- docs/ flat con design+implementation per componente
- scripts/, secrets/ placeholder
- pyproject.toml root (uv workspace vuoto + ruff + pytest)
- .gitignore, .env.example, .mcp.json.example, README.md

Rinominate le doc: Docs/<comp>/2026-04-21-*.md -> docs/<comp>-*.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,46 @@
+# Python
+__pycache__/
+*.pyc
+*.pyo
+*.egg-info/
+build/
+dist/
+.pytest_cache/
+.coverage
+htmlcov/
+.venv/
+.venv-*/
+*.db
+*.db-journal
+
+# Secrets
+secrets/*
+!secrets/.gitkeep
+
+# Data
+data/
+
+# Per-service artifacts
+services/*/build/
+services/*/dist/
+services/*/.pytest_cache/
+services/*/*.egg-info/
+services/*/.venv/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Environment — solo .example tracciati
+.env
+*.env
+!*.env.example
+!.env.example
+
+# MCP config con token — solo .example tracciato
+.mcp.json