feat: add external knowledge retrieval and cross-project activity

Connect Dify, FastGPT and RAGFlow through read-only bindings, encrypted local credentials, shared retrieval and persistent citations. Configuration and removal affect GoodBuddy only.

Show active conversations across projects, retain older live work, and improve project dialog scrolling. Queue concurrent questions and route managed SSH OpenCode questions through the Agent. Preserve recoverable read/search errors and partial search results.

Document the Electron UI automation standard, real model and external knowledge validation, and remaining acceptance limits.

Validation: earlier full regression passed 4081 tests with 66 skipped; subsequent focused remote-question checks and real Linux evidence are recorded in feature progress. Precommit typecheck and lint passed; latest project dialog and shared UI suites passed 58 tests. The full suite was not rerun for the final dialog changes.

Release note: Use external knowledge in conversations, find active work across projects, and answer concurrent local or managed SSH OpenCode questions. Managed SSH questions require the updated Agent adapter.

src/agent-daemon/agent-owned-acp-prompt.ts

@@ -10,6 +10,7 @@ import {
   type SessionNotification
 } from '@agentclientprotocol/sdk'
 import { canonicalJson } from '../shared/agent-protocol/canonical'
+import { remoteQuestionSchema, type RemoteQuestionResponse } from '../shared/remote-question-contracts'
 import type {
   RemoteOwnedPromptStartRequest,
   RemoteOwnedPromptStartResult
@@ -57,6 +58,10 @@ export class AgentOwnedAcpPrompt {
   #promptPromise?: Promise<void>
   #closed = false
   #initialized = false
+  readonly #questions = new Map<string, {
+    endpoint: string; operationId: string; questionCount: number; notification: SessionNotification
+  }>()
+  #acceptQuestions = false
   #active?: {
     operationId: string
   }
@@ -94,6 +99,8 @@ export class AgentOwnedAcpPrompt {
         return
       }
       const error = new Error('ACP Runtime process exited')
+      this.#acceptQuestions = false
+      this.#questions.clear()
       controller?.error(error)
       controller = undefined
       rejectProcessExit(error)
@@ -213,6 +220,7 @@ export class AgentOwnedAcpPrompt {
     this.#active = {
       operationId: request.operationId
     }
+    this.#acceptQuestions = true
     const begun = this.#options.transcript.begin({
       bindingId: this.#options.bindingId,
       operationId: request.operationId,
@@ -277,6 +285,8 @@ export class AgentOwnedAcpPrompt {
         }
       )
       .finally(() => {
+        this.#questions.clear()
+        this.#acceptQuestions = false
         this.#active = undefined
       })
     void this.#promptPromise.catch(() => undefined)
@@ -284,6 +294,8 @@ export class AgentOwnedAcpPrompt {
   }
 
   async cancel(): Promise<void> {
+    this.#acceptQuestions = false
+    this.#questions.clear()
     if (this.#sessionId !== undefined && !this.#closed) {
       await this.#connection.cancel({ sessionId: this.#sessionId })
     }
@@ -293,6 +305,29 @@ export class AgentOwnedAcpPrompt {
     this.#clear()
   }
 
+  async respondToQuestion(request: RemoteQuestionResponse): Promise<void> {
+    const pending = this.#questions.get(request.questionId)
+    if (this.#closed || !pending || this.#active?.operationId !== request.operationId ||
+      pending.operationId !== request.operationId || request.bindingId !== this.#options.bindingId) {
+      throw new Error('Remote question is no longer pending for this prompt')
+    }
+    if (request.answers.length !== 0 && request.answers.length !== pending.questionCount) {
+      throw new Error('Question answer count does not match')
+    }
+    const response = await fetch(pending.endpoint, {
+      method: 'POST', headers: { 'content-type': 'application/json' },
+      body: JSON.stringify({ ...request, sessionId: this.#sessionId }),
+      signal: AbortSignal.timeout(30_000), redirect: 'error'
+    })
+    if (!response.ok) throw new Error(`OpenCode question response failed (${response.status})`)
+    this.#questions.delete(request.questionId)
+  }
+
+  pendingQuestions(operationId: string): SessionNotification[] {
+    if (!this.#acceptQuestions || this.#active?.operationId !== operationId) return []
+    return [...this.#questions.values()].map(question => question.notification)
+  }
+
   #client(): Client {
     return {
       requestPermission: async (request) =>
@@ -306,12 +341,38 @@ export class AgentOwnedAcpPrompt {
   }
 
   #handleSessionUpdate(notification: SessionNotification): void {
+    if (this.#closed || !this.#active) return
     if (
       notification.sessionId !== this.#sessionId &&
       this.#sessionId !== undefined
     ) {
       throw new Error('ACP session notification identity changed')
     }
+    const resolved = notification.update._meta?.goodbuddyQuestionResolved
+    if (typeof resolved === 'string') {
+      this.#questions.delete(resolved)
+      return
+    }
+    const extension = notification.update._meta?.goodbuddyQuestion
+    if (extension !== undefined) {
+      if (!this.#acceptQuestions) return
+      if (!extension || typeof extension !== 'object') throw new Error('Invalid remote question')
+      const value = extension as { question?: unknown; endpoint?: unknown; childCallId?: unknown }
+      const question = remoteQuestionSchema.parse(value.question)
+      if (typeof value.endpoint !== 'string' ||
+        !/^http:\/\/127\.0\.0\.1:\d+\/[A-Za-z0-9_-]{43}$/u.test(value.endpoint)) {
+        throw new Error('Invalid remote question endpoint')
+      }
+      if (this.#questions.has(question.id)) return
+      // The process-local reply capability never enters the durable transcript.
+      notification = { ...notification, update: {
+        ...notification.update, _meta: { goodbuddyQuestion: {
+          question, ...(typeof value.childCallId === 'string' ? { childCallId: value.childCallId } : {})
+        } }
+      } }
+      this.#questions.set(question.id, { endpoint: value.endpoint, operationId: this.#active.operationId,
+        questionCount: question.questions.length, notification })
+    }
     this.#options.transcript.append({
       bindingId: this.#options.bindingId,
       operationId: this.#requireActive().operationId,
@@ -371,6 +432,8 @@ export class AgentOwnedAcpPrompt {
       return
     }
     this.#closed = true
+    this.#acceptQuestions = false
+    this.#questions.clear()
     this.#unsubscribeOutput()
     this.#unsubscribeExit()
   }