revert: remove unused Agent PostgreSQL persistence

tests/history/store.test.ts

@@ -1,53 +1,67 @@
 import { afterEach, beforeEach, describe, expect, it } from "bun:test";
+import { mkdtemp, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
 
-import { ConversationStore } from "../../src/conversations/store.js";
 import { SessionHistoryStore } from "../../src/history/store.js";
-import { createTestDatabase } from "../helpers/postgres.js";
 
 describe("SessionHistoryStore", () => {
-  let conversationStore: ConversationStore;
+  let tempDir: string;
   let store: SessionHistoryStore;
-  let dispose: (() => Promise<void>) | undefined;
 
   beforeEach(async () => {
-    const testDb = await createTestDatabase();
-    conversationStore = new ConversationStore(testDb.db);
-    store = new SessionHistoryStore(testDb.db);
-    dispose = testDb.dispose;
-    await Promise.all([conversationStore.initialize(), store.initialize()]);
+    tempDir = await mkdtemp(join(tmpdir(), "tjwater-history-"));
+    store = new SessionHistoryStore(tempDir);
+    await store.initialize();
   });
 
   afterEach(async () => {
-    await dispose?.();
+    await rm(tempDir, { force: true, recursive: true });
   });
 
-  it("stores ordered turns for the durable conversation id", async () => {
-    await conversationStore.ensure({
-      actorKey: "actor-1",
-      projectId: "project-1",
-      projectKey: "project-1",
-      sessionId: "thread-1",
-      userId: "user-1",
-    });
+  it("falls back to legacy runtime-session transcripts by client session id and migrates on append", async () => {
+    await writeFile(
+      join(tempDir, "actor-1__project-1__runtime-session-1.json"),
+      JSON.stringify(
+        {
+          actorKey: "actor-1",
+          clientSessionId: "thread-1",
+          projectKey: "project-1",
+          sessionId: "runtime-session-1",
+          turns: [
+            {
+              id: "turn-1",
+              assistantMessage: "先检查泵站流量。",
+              timestamp: "2026-05-21T00:00:00.000Z",
+              toolCallCount: 1,
+              userMessage: "帮我看一下当前异常。",
+            },
+          ],
+          updatedAt: "2026-05-21T00:00:00.000Z",
+        },
+        null,
+        2,
+      ),
+      "utf8",
+    );
 
-    const first = await store.appendTurn(
+    const recentTurns = await store.getRecentTurns(
       {
         actorKey: "actor-1",
+        clientSessionId: "thread-1",
         projectKey: "project-1",
         sessionId: "thread-1",
       },
-      {
-        assistantMessage: "先检查泵站流量。",
-        toolCallCount: 1,
-        userMessage: "帮我看一下当前异常。",
-      },
+      5,
     );
 
-    expect(first.turns).toHaveLength(1);
+    expect(recentTurns).toHaveLength(1);
+    expect(recentTurns[0]?.userMessage).toBe("帮我看一下当前异常。");
 
-    const second = await store.appendTurn(
+    const transcript = await store.appendTurn(
       {
         actorKey: "actor-1",
+        clientSessionId: "thread-1",
         projectKey: "project-1",
         sessionId: "thread-1",
       },
@@ -58,31 +72,15 @@ describe("SessionHistoryStore", () => {
       },
     );
 
-    expect(second.sessionId).toBe("thread-1");
-    expect(second.turns).toHaveLength(2);
-    expect(second.turns[0]?.userMessage).toBe("帮我看一下当前异常。");
-    expect(second.turns[1]?.assistantMessage).toBe("已经定位到 3 条疑似异常支路。");
+    expect(transcript.sessionId).toBe("thread-1");
+    expect(transcript.turns).toHaveLength(2);
   });
 
   it("clones only the kept prefix when forking a thread", async () => {
-    await conversationStore.ensure({
-      actorKey: "actor-2",
-      projectId: "project-2",
-      projectKey: "project-2",
-      sessionId: "thread-source",
-      userId: "user-2",
-    });
-    await conversationStore.ensure({
-      actorKey: "actor-2",
-      projectId: "project-2",
-      projectKey: "project-2",
-      sessionId: "thread-fork",
-      userId: "user-2",
-    });
-
     await store.appendTurn(
       {
         actorKey: "actor-2",
+        clientSessionId: "thread-source",
         projectKey: "project-2",
         sessionId: "thread-source",
       },
@@ -95,6 +93,7 @@ describe("SessionHistoryStore", () => {
     await store.appendTurn(
       {
         actorKey: "actor-2",
+        clientSessionId: "thread-source",
         projectKey: "project-2",
         sessionId: "thread-source",
       },
@@ -108,11 +107,13 @@ describe("SessionHistoryStore", () => {
     const cloned = await store.cloneThread(
       {
         actorKey: "actor-2",
+        clientSessionId: "thread-source",
         projectKey: "project-2",
         sessionId: "thread-source",
       },
       {
         actorKey: "actor-2",
+        clientSessionId: "thread-fork",
         projectKey: "project-2",
         sessionId: "thread-fork",
       },
@@ -125,6 +126,7 @@ describe("SessionHistoryStore", () => {
     const forkRecentTurns = await store.getRecentTurns(
       {
         actorKey: "actor-2",
+        clientSessionId: "thread-fork",
         projectKey: "project-2",
         sessionId: "thread-fork",
       },