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
- V1 requirements: C4 docs, ADR, AGENTS.md, debug-log.md
- Design documents in docs/

packages/tui/test/util/renderer.test.ts

@@ -0,0 +1,30 @@
+import { expect, test } from "bun:test"
+import { destroyRenderer } from "../../src/util/renderer"
+
+test("clears the terminal title before destroying the renderer", () => {
+  const calls: string[] = []
+  destroyRenderer({
+    isDestroyed: false,
+    setTerminalTitle(title) {
+      calls.push(`title:${title}`)
+    },
+    destroy() {
+      calls.push("destroy")
+    },
+  })
+  expect(calls).toEqual(["title:", "destroy"])
+})
+
+test("still clears the title after renderer destruction", () => {
+  const calls: string[] = []
+  destroyRenderer({
+    isDestroyed: true,
+    setTerminalTitle(title) {
+      calls.push(`title:${title}`)
+    },
+    destroy() {
+      calls.push("destroy")
+    },
+  })
+  expect(calls).toEqual(["title:"])
+})