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/opencode/script/build-node.ts

@@ -0,0 +1,31 @@
+#!/usr/bin/env bun
+
+import { Script } from "@opencode-ai/script"
+import path from "path"
+import { fileURLToPath } from "url"
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const dir = path.resolve(__dirname, "..")
+
+process.chdir(dir)
+
+const generated = await import("./generate.ts")
+
+await Bun.build({
+  target: "node",
+  entrypoints: ["./src/node.ts"],
+  outdir: "./dist/node",
+  format: "esm",
+  sourcemap: "linked",
+  external: ["jsonc-parser", "@lydell/node-pty"],
+  define: {
+    OPENCODE_MODELS_DEV: generated.modelsData,
+    OPENCODE_CHANNEL: `'${Script.channel}'`,
+  },
+  files: {
+    "opencode-web-ui.gen.ts": "",
+  },
+})
+
+console.log("Build complete")