feat(aircoding): AirCoding V2 baseline — deterministic multi-agent architecture

Forked from OpenCode v1.17.4 with multi-agent system:
- 5 agents: aircoding, scheduler, worker, architect, reviewer
- Deterministic DAG scheduling engine (coordinator_tick)
- Tool whitelists as hard enforcement
- AirCoding validation plugin
- System prompt injection for routing
- V1 requirements: C4 docs, ADR, AGENTS.md, debug-log.md
- Design documents in docs/

packages/stats/README.md

@@ -0,0 +1,16 @@
+# OpenCode Stats
+
+Stats is a separate site from the console. Runtime, database, and domain services live in `core`; the SolidStart website lives in `app`; deployable Lambda entrypoints live in `function`.
+
+## Packages
+
+- `app`: SolidStart frontend/site.
+- `core`: Effect services, app config, Drizzle schema/migrations, and stats domains.
+- `function`: Lambda handlers that call into `core` services.
+
+## Commands
+
+- `bun run dev:stats` from the repo root starts the SolidStart app.
+- `bun run --cwd packages/stats/app typecheck` typechecks the site.
+- `bun run --cwd packages/stats/core typecheck` typechecks the Effect/database package.
+- `bun run --cwd packages/stats/function typecheck` typechecks Lambda entrypoints.