feat: 接入 pi 原生能力——Usage Card、思考等级切换、压缩与分支摘要

apps/desktop/src/main/ipc.ts

@@ -141,6 +141,43 @@ export function registerIpc(): AgentService {
     return pass(() => service.logoutProvider(providerId))
   })
 
+  // ---- 思考等级 / 压缩 / 分支摘要（pi 原生能力） ----
+  ipcMain.handle('thinking:set', (_event, level: unknown) => {
+    if (typeof level !== 'string') throw new Error('invalid thinking level')
+    return pass(() => service.setThinkingLevel(level as never))
+  })
+
+  ipcMain.handle('session:compact', (_event, instructions: unknown) => {
+    if (instructions !== undefined && instructions !== null && typeof instructions !== 'string') {
+      throw new Error('invalid compaction instructions')
+    }
+    return pass(() => service.compactSession(instructions || undefined))
+  })
+
+  ipcMain.handle('session:compact:abort', () => pass(() => service.abortCompaction()))
+
+  ipcMain.handle('session:autoCompact', (_event, enabled: unknown) => {
+    if (typeof enabled !== 'boolean') throw new Error('invalid flag')
+    return pass(() => service.setAutoCompactionEnabled(enabled))
+  })
+
+  ipcMain.handle('session:forkPoints', () => pass(() => service.listForkPoints()))
+
+  ipcMain.handle('session:navigate', (_event, entryId: unknown, options: unknown) => {
+    if (typeof entryId !== 'string' || !entryId.trim()) throw new Error('invalid entry id')
+    const o = (options ?? {}) as { summarize?: unknown; customInstructions?: unknown }
+    if (o.summarize !== undefined && typeof o.summarize !== 'boolean') throw new Error('invalid navigate options')
+    if (o.customInstructions !== undefined && typeof o.customInstructions !== 'string') {
+      throw new Error('invalid navigate options')
+    }
+    return pass(() =>
+      service.navigateTree(entryId, {
+        ...(o.summarize === true ? { summarize: true } : {}),
+        ...(typeof o.customInstructions === 'string' ? { customInstructions: o.customInstructions } : {})
+      })
+    )
+  })
+
   // ---- 应用设置 ----
   ipcMain.handle('settings:get', () => service.getSettings())