Introduce the @void-nav/api Hono + SQLite backend that powers the docs site:
a persisted implementation board (kanban), a custom documentation-pages store
with AI beautify, and an agentic orchestrator that runs `pi` agents per card.
The orchestrator spawns `pi --mode rpc` inside an isolated git worktree per run,
streams slim events over SSE, and lets the agent drive the board/docs via
token-gated internal endpoints (all SQLite writes stay in-process). Interrupted
runs are reconciled to "stopped" on boot.
Workspace wiring: root `dev:api`/`dev:web` scripts with `concurrently`, the
docs Vite `/api` proxy, and `.worktrees/` gitignore.
francy51
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