refactor(core): migrate to Bun and converge acquisition policies and Agent boundaries

apps/server/test/preflight.test.ts

@@ -62,7 +62,7 @@ describe("存储自检", () => {
     mkdirSync(ok);
     mkdirSync(ro);
     chmodSync(ro, 0o555);
-    const isRoot = Deno.uid() === 0;
+    const isRoot = process.getuid?.() === 0;
     const { problems, warnings } = await checkStorage({
       dataDir,
       sessionDir: join(dataDir, "agent-sessions"),
@@ -82,7 +82,7 @@ describe("存储自检", () => {
   });
 
   it("数据目录不可写 → problem", async () => {
-    if (Deno.uid() === 0) return; // root 无视权限位
+    if (process.getuid?.() === 0) return; // root 无视权限位
     const locked = join(dir, "locked");
     mkdirSync(locked);
     chmodSync(locked, 0o555);