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/core/src/config/plugin/reference.ts

@@ -0,0 +1,69 @@
+export * as ConfigReferencePlugin from "./reference"
+
+import path from "path"
+import { Effect } from "effect"
+import { Config } from "../../config"
+import { ConfigReference } from "../reference"
+import { Global } from "../../global"
+import { Location } from "../../location"
+import { PluginV2 } from "../../plugin"
+import { Reference } from "../../reference"
+import { AbsolutePath } from "../../schema"
+
+export const Plugin = {
+  id: PluginV2.ID.make("core/config-reference"),
+  effect: Effect.gen(function* () {
+    const config = yield* Config.Service
+    const global = yield* Global.Service
+    const location = yield* Location.Service
+    const references = yield* Reference.Service
+    const update = yield* references.transform()
+    const entries = new Map<string, Reference.Source>()
+    for (const doc of (yield* config.entries()).filter(
+      (entry): entry is Config.Document => entry.type === "document",
+    )) {
+      const directory = doc.path ? path.dirname(doc.path) : location.directory
+      for (const [name, entry] of Object.entries(doc.info.references ?? {})) {
+        if (!validAlias(name)) continue
+        entries.set(
+          name,
+          local(entry)
+            ? new Reference.LocalSource({
+                type: "local",
+                path: AbsolutePath.make(
+                  localPath(directory, global.home, typeof entry === "string" ? entry : entry.path),
+                ),
+                description: typeof entry === "string" ? undefined : entry.description,
+                hidden: typeof entry === "string" ? undefined : entry.hidden,
+              })
+            : new Reference.GitSource({
+                type: "git",
+                repository: typeof entry === "string" ? entry : entry.repository,
+                branch: typeof entry === "string" ? undefined : entry.branch,
+                description: typeof entry === "string" ? undefined : entry.description,
+                hidden: typeof entry === "string" ? undefined : entry.hidden,
+              }),
+        )
+      }
+    }
+
+    yield* update((editor) => {
+      for (const [name, source] of entries) editor.add(name, source)
+    })
+  }),
+}
+
+function validAlias(name: string) {
+  return name.length > 0 && !/[\/\s`,]/.test(name)
+}
+
+function local(entry: ConfigReference.Entry): entry is string | ConfigReference.Local {
+  return typeof entry === "string"
+    ? entry.startsWith(".") || entry.startsWith("/") || entry.startsWith("~")
+    : "path" in entry
+}
+
+function localPath(directory: string, home: string, value: string) {
+  if (value.startsWith("~/")) return path.join(home, value.slice(2))
+  return path.isAbsolute(value) ? value : path.resolve(directory, value)
+}