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/opencode/test/server/global-bus.ts

@@ -0,0 +1,31 @@
+import { GlobalBus, type GlobalEvent } from "@/bus/global"
+import { Cause, Effect } from "effect"
+
+export function waitGlobalBusEvent(input: {
+  timeout?: number
+  message?: string
+  predicate: (event: GlobalEvent) => boolean
+}) {
+  return Effect.callback<GlobalEvent, unknown>((resume) => {
+    const cleanup = () => GlobalBus.off("event", handler)
+
+    const handler = (event: GlobalEvent) => {
+      try {
+        if (!input.predicate(event)) return
+        cleanup()
+        resume(Effect.succeed(event))
+      } catch (error) {
+        cleanup()
+        resume(Effect.fail(error))
+      }
+    }
+
+    GlobalBus.on("event", handler)
+    return Effect.sync(cleanup)
+  }).pipe(
+    Effect.timeout(input.timeout ?? 10_000),
+    Effect.mapError((error) =>
+      Cause.isTimeoutError(error) ? new Error(input.message ?? "timed out waiting for global bus event") : error,
+    ),
+  )
+}