feat: 添加会话关闭功能及确认对话框，更新相关国际化文本

ccw/frontend/src/stores/sessionManagerStore.ts

@@ -285,6 +285,13 @@ export const useSessionManagerStore = create<SessionManagerStore>()(
           shellKind: session.shellKind,
         };
 
+        // Map shellKind to preferredShell for API
+        const mapShellKind = (kind: string): 'bash' | 'pwsh' | 'cmd' => {
+          if (kind === 'pwsh' || kind === 'powershell') return 'pwsh';
+          if (kind === 'cmd') return 'cmd';
+          return 'bash'; // 'git-bash', 'wsl-bash', or fallback
+        };
+
         try {
           // Close existing session
           await closeCliSession(terminalId, projectPath ?? undefined);
@@ -293,7 +300,7 @@ export const useSessionManagerStore = create<SessionManagerStore>()(
           const result = await createCliSession(
             {
               workingDir: sessionConfig.workingDir,
-              preferredShell: sessionConfig.shellKind === 'powershell' ? 'pwsh' : 'bash',
+              preferredShell: mapShellKind(sessionConfig.shellKind),
               tool: sessionConfig.tool,
               model: sessionConfig.model,
               resumeKey: sessionConfig.resumeKey,
@@ -325,6 +332,35 @@ export const useSessionManagerStore = create<SessionManagerStore>()(
           throw error;
         }
       },
+
+      closeSession: async (terminalId: string) => {
+        const projectPath = selectProjectPath(useWorkflowStore.getState());
+        const cliStore = useCliSessionStore.getState();
+
+        try {
+          // Call backend API to terminate PTY session
+          await closeCliSession(terminalId, projectPath ?? undefined);
+
+          // Remove session from cliSessionStore
+          cliStore.removeSession(terminalId);
+
+          // Remove terminal meta
+          set(
+            (state) => {
+              const nextMetas = { ...state.terminalMetas };
+              delete nextMetas[terminalId];
+              return { terminalMetas: nextMetas };
+            },
+            false,
+            'closeSession'
+          );
+        } catch (error) {
+          if (import.meta.env.DEV) {
+            console.error('[SessionManager] closeSession error:', error);
+          }
+          throw error;
+        }
+      },
     }),
     { name: 'SessionManagerStore' }
   )