v1: Dependency-free rewrite (Swift or Go) to drop Python/Node/Homebrew

[ish-cs]

Goal

Remove the runtime dependency stack so the app is fully self-contained.

Current deps (MVP)

• imsg (Homebrew) — reads chat.db + drives Messages
• Python + FastMCP — the MCP server
• Node + poke CLI — the tunnel
• uv — Python env

Proposal

• Rewrite the MCP server in Swift (native NSStatusBar menu bar app + embedded HTTP MCP server in one binary) or Go
• Reimplement the chat.db reads (SQLite) + AppleScript/IMCore sends, or vendor the imsg binary
• Decide tunnel strategy: bundle/embed the Poke tunnel, or implement the MCP transport directly
• Single notarized binary, zero external installs

Payoff

Pairs with #1 (notarized .dmg) for a true one-click product. Smaller, faster, no version drift from brew/node/python upgrades.