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/core/src/config/formatter.ts

@@ -0,0 +1,12 @@
+export * as ConfigFormatter from "./formatter"
+
+import { Schema } from "effect"
+
+export class Entry extends Schema.Class<Entry>("ConfigV2.Formatter.Entry")({
+  disabled: Schema.Boolean.pipe(Schema.optional),
+  command: Schema.String.pipe(Schema.Array, Schema.optional),
+  environment: Schema.Record(Schema.String, Schema.String).pipe(Schema.optional),
+  extensions: Schema.String.pipe(Schema.Array, Schema.optional),
+}) {}
+
+export const Info = Schema.Union([Schema.Boolean, Schema.Record(Schema.String, Entry)])