重构会话管理功能，由后端 opencode 发放 sessionId，后端做 scope

src/server.ts

@@ -5,6 +5,7 @@ import express from "express";
 import { SessionHistoryStore } from "./history/store.js";
 import { ChatSessionBridge } from "./chat/sessionBridge.js";
 import { config } from "./config.js";
+import { ConversationStore } from "./conversations/store.js";
 import { logger } from "./logger.js";
 import { LearningOrchestrator } from "./learning/orchestrator.js";
 import { MemoryStore } from "./memory/store.js";
@@ -12,13 +13,12 @@ import { ResultReferenceResolver } from "./results/resolver.js";
 import { ResultReferenceStore } from "./results/store.js";
 import { buildChatRouter } from "./routes/chat.js";
 import { opencodeRuntime } from "./runtime/opencode.js";
-import { SessionRegistry } from "./session/registry.js";
 import { ToolSessionContextStore } from "./session/toolContextStore.js";
 import { DynamicHttpExecutor } from "./tools/dynamicHttpExecutor.js";
 
 const app = express();
-const registry = new SessionRegistry(config.SESSION_TTL_SECONDS);
-const sessionBridge = new ChatSessionBridge(registry, opencodeRuntime);
+const sessionBridge = new ChatSessionBridge(opencodeRuntime);
+const conversationStore = new ConversationStore();
 const memoryStore = new MemoryStore();
 const sessionHistoryStore = new SessionHistoryStore();
 const toolContextStore = new ToolSessionContextStore();
@@ -63,12 +63,22 @@ app.post("/internal/tools/dynamic-http-call", async (req, res) => {
     return;
   }
 
-  const sessionId = typeof req.body?.sessionId === "string" ? req.body.sessionId : "";
-  const context = sessionBridge.getSessionContext(sessionId);
+  const sessionScopeKey =
+    typeof req.body?.sessionScopeKey === "string" ? req.body.sessionScopeKey : "";
+  const threadContext = await toolContextStore.read(sessionScopeKey);
+  const runtimeContext = sessionBridge.getActiveSensitiveContext(sessionScopeKey);
+  if (!threadContext && !runtimeContext) {
+    res.status(404).json({
+      message: "runtime or session context not found",
+      detail: sessionScopeKey,
+    });
+    return;
+  }
+  const context = runtimeContext ?? threadContext;
   if (!context) {
     res.status(404).json({
-      message: "session context not found",
-      detail: sessionId,
+      message: "runtime or session context not found",
+      detail: sessionScopeKey,
     });
     return;
   }
@@ -83,12 +93,12 @@ app.post("/internal/tools/dynamic-http-call", async (req, res) => {
         arguments: req.body?.arguments,
       },
       {
-        accessToken: context.accessToken,
+        accessToken: runtimeContext?.accessToken,
         actorKey: context.actorKey,
         clientSessionId: context.clientSessionId,
         projectId: context.projectId,
         projectKey: context.projectKey,
-        sessionId,
+        sessionId: context.clientSessionId,
         traceId: context.traceId,
       },
     );
@@ -108,13 +118,14 @@ app.post("/internal/tools/fetch-result-ref", async (req, res) => {
     return;
   }
 
-  const sessionId = typeof req.body?.sessionId === "string" ? req.body.sessionId : "";
+  const sessionScopeKey =
+    typeof req.body?.sessionScopeKey === "string" ? req.body.sessionScopeKey : "";
   const resultRef = typeof req.body?.result_ref === "string" ? req.body.result_ref : "";
-  const context = sessionBridge.getSessionContext(sessionId);
+  const context = await toolContextStore.read(sessionScopeKey);
   if (!context) {
     res.status(404).json({
       message: "session context not found",
-      detail: sessionId,
+      detail: sessionScopeKey,
     });
     return;
   }
@@ -127,6 +138,7 @@ app.post("/internal/tools/fetch-result-ref", async (req, res) => {
     resultRef,
     {
       actorKey: context.actorKey,
+      clientSessionId: context.clientSessionId,
       projectId: context.projectId,
     },
     {
@@ -149,13 +161,14 @@ app.post("/internal/tools/store-render-ref", async (req, res) => {
     return;
   }
 
-  const sessionId = typeof req.body?.sessionId === "string" ? req.body.sessionId : "";
+  const sessionScopeKey =
+    typeof req.body?.sessionScopeKey === "string" ? req.body.sessionScopeKey : "";
   const filePath = typeof req.body?.file_path === "string" ? req.body.file_path.trim() : "";
-  const context = sessionBridge.getSessionContext(sessionId);
+  const context = await toolContextStore.read(sessionScopeKey);
   if (!context) {
     res.status(404).json({
       message: "session context not found",
-      detail: sessionId,
+      detail: sessionScopeKey,
     });
     return;
   }
@@ -170,7 +183,7 @@ app.post("/internal/tools/store-render-ref", async (req, res) => {
       clientSessionId: context.clientSessionId,
       projectId: context.projectId,
       projectKey: context.projectKey,
-      sessionId,
+      sessionId: context.clientSessionId,
       source: "migration",
       traceId: context.traceId,
     });
@@ -198,13 +211,14 @@ app.post("/internal/tools/session-search", async (req, res) => {
     return;
   }
 
-  const sessionId = typeof req.body?.sessionId === "string" ? req.body.sessionId : "";
+  const sessionScopeKey =
+    typeof req.body?.sessionScopeKey === "string" ? req.body.sessionScopeKey : "";
   const query = typeof req.body?.query === "string" ? req.body.query : "";
-  const context = await toolContextStore.read(sessionId);
+  const context = await toolContextStore.read(sessionScopeKey);
   if (!context) {
     res.status(404).json({
-      message: "tool session context not found",
-      detail: sessionId,
+      message: "session context not found",
+      detail: sessionScopeKey,
     });
     return;
   }
@@ -231,7 +245,9 @@ app.use(
   buildChatRouter(
     sessionBridge,
     opencodeRuntime,
+    conversationStore,
     memoryStore,
+    sessionHistoryStore,
     learningOrchestrator,
     resultReferenceResolver,
   ),
@@ -239,6 +255,7 @@ app.use(
 
 const bootstrap = async () => {
   await Promise.all([
+    conversationStore.initialize(),
     learningOrchestrator.initialize(),
     memoryStore.initialize(),
     resultReferenceStore.initialize(),