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/

turbo.json

@@ -0,0 +1,25 @@
+{
+  "$schema": "https://v2-8-13.turborepo.dev/schema.json",
+  "globalEnv": ["CI", "OPENCODE_DISABLE_SHARE"],
+  "globalPassThroughEnv": ["CI", "OPENCODE_DISABLE_SHARE"],
+  "tasks": {
+    "typecheck": {},
+    "build": {
+      "dependsOn": [],
+      "outputs": ["dist/**"]
+    },
+    "opencode#test": {
+      "dependsOn": ["^build"],
+      "outputs": [],
+      "passThroughEnv": ["*"]
+    },
+    "@opencode-ai/app#test": {
+      "dependsOn": ["^build"],
+      "outputs": []
+    },
+    "@opencode-ai/ui#test": {
+      "dependsOn": ["^build"],
+      "outputs": []
+    }
+  }
+}