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/desktop/src/main/updater-controller.ts

@@ -0,0 +1,97 @@
+import type { UpdaterState } from "@opencode-ai/app/updater"
+
+export type { UpdaterState } from "@opencode-ai/app/updater"
+
+export type UpdaterReadyRecord = { version: string }
+
+export type UpdaterBackend = {
+  checkForUpdates(): Promise<{ isUpdateAvailable?: boolean; updateInfo?: { version?: string } } | null | undefined>
+  downloadUpdate(): Promise<unknown>
+  quitAndInstall(): void
+}
+
+type UpdaterPersistence = {
+  get(): UpdaterReadyRecord | undefined | Promise<UpdaterReadyRecord | undefined>
+  set(value: UpdaterReadyRecord): void | Promise<void>
+  clear(): void | Promise<void>
+}
+
+export function createUpdaterController(input: {
+  enabled: boolean
+  currentVersion: string
+  backend: UpdaterBackend
+  persistence: UpdaterPersistence
+  stop: () => Promise<void>
+  log?: (message: string, data?: object) => void
+}) {
+  let state: UpdaterState = input.enabled ? { status: "idle" } : { status: "disabled" }
+  let pending: Promise<UpdaterState> | undefined
+  const listeners = new Set<(state: UpdaterState) => void>()
+
+  const transition = (next: UpdaterState) => {
+    input.log?.("updater state changed", { from: state.status, to: next.status })
+    state = next
+    listeners.forEach((listener) => listener(state))
+    return state
+  }
+
+  const check = () => {
+    if (!input.enabled) return Promise.resolve(state)
+    if (state.status === "ready") return Promise.resolve(state)
+    if (pending) return pending
+
+    pending = (async () => {
+      transition({ status: "checking" })
+      const result = await input.backend.checkForUpdates()
+      const version = result?.updateInfo?.version
+      if (!result?.isUpdateAvailable || !version || version === input.currentVersion) {
+        await input.persistence.clear()
+        return transition({ status: "up-to-date" })
+      }
+
+      transition({ status: "downloading", version })
+      await input.backend.downloadUpdate()
+      await input.persistence.set({ version })
+      return transition({ status: "ready", version })
+    })()
+      .catch((error) =>
+        transition({ status: "error", message: error instanceof Error ? error.message : String(error) }),
+      )
+      .finally(() => {
+        pending = undefined
+      })
+    return pending
+  }
+
+  return {
+    getState: () => state,
+    subscribe(listener: (state: UpdaterState) => void) {
+      listeners.add(listener)
+      listener(state)
+      return () => listeners.delete(listener)
+    },
+    async start() {
+      const ready = await input.persistence.get()
+      if (ready?.version === input.currentVersion) await input.persistence.clear()
+      return check()
+    },
+    check,
+    async install() {
+      if (state.status !== "ready") throw new Error("Update is not ready to install")
+      const version = state.version
+      transition({ status: "installing", version })
+      await input
+        .stop()
+        .then(() => {
+          input.backend.quitAndInstall()
+          transition({ status: "ready", version })
+        })
+        .catch((error) => {
+          transition({ status: "ready", version })
+          throw error
+        })
+    },
+  }
+}
+
+export type UpdaterController = ReturnType<typeof createUpdaterController>