Refactor Tor to subprocess mode, enabled by default (v0.46.1)

- Spawn tor binary as subprocess instead of requiring external daemon
- Auto-generate torrc in $ORLY_DATA_DIR/tor/ (userspace, no root)
- Enable Tor by default; gracefully disable if tor binary not found
- Add ORLY_TOR_BINARY and ORLY_TOR_SOCKS config options
- Remove external Tor setup scripts and documentation

Files modified:
- app/config/config.go: New subprocess-based Tor config options
- app/main.go: Updated Tor initialization for new config
- pkg/tor/service.go: Rewritten for subprocess management
- Removed: deploy/orly-tor.service, docs/TOR_SETUP.md, scripts/tor-*.sh

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pkg/version/version

@@ -1 +1 @@
-v0.46.0
+v0.46.1