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/main/assistant/assistant-database.ts

@@ -1,4 +1,5 @@
 import { randomUUID } from 'node:crypto'
+import { knowledgeReferenceKey } from '../../shared/knowledge-reference'
 import { DatabaseSync } from 'node:sqlite'
 import {
   builtInDefaultProjectSeedDescription,
@@ -588,6 +589,14 @@ const taskSelect = `SELECT tasks.*,
    LIMIT 1) AS active_run_status
   FROM tasks`
 
+// Match toTask's live statuses: pending schedule runs normalize to queued.
+const activeVisibleTaskSelect = `${taskSelect}
+  WHERE visible = 1 AND (
+    active_run_status = 'running'
+    OR (active_run_status IS NULL
+        AND status IN ('running', 'waiting_approval'))
+  )`
+
 function toTask(row: TaskRow): AssistantTask {
   return {
     id: row.id,
@@ -1470,16 +1479,7 @@ function reduceRecoveredAgentEvent(
           : undefined
     }
   } else if (event.type === 'source-references') {
-    const key = (
-      reference: (typeof event.references)[number]
-    ): string =>
-      [
-        reference.libraryId,
-        reference.documentId,
-        reference.chunkId ?? '',
-        reference.locator ?? '',
-        reference.snippet
-      ].join('\0')
+    const key = knowledgeReferenceKey
     const incoming = [
       ...new Map(
         event.references.map((reference) => [key(reference), reference])
@@ -2612,8 +2612,15 @@ export class AssistantDatabase {
                 updated_at
          FROM conversations
          WHERE status = 'active'
-         ORDER BY updated_at DESC
-         LIMIT 100`
+           AND (
+             id IN (SELECT id FROM conversations WHERE status = 'active'
+                    ORDER BY updated_at DESC LIMIT 100)
+             OR id IN (SELECT conversation_id FROM (${activeVisibleTaskSelect}))
+             OR EXISTS (SELECT 1 FROM messages
+                        WHERE conversation_id = conversations.id
+                          AND state = 'streaming')
+           )
+         ORDER BY updated_at DESC`
       )
       .all() as ConversationRow[]
     const messageStatement = database.prepare(
@@ -4195,8 +4202,12 @@ export class AssistantDatabase {
       .prepare(
         `${taskSelect}
          WHERE visible = 1
-         ORDER BY created_at DESC
-         LIMIT ?`
+           AND (
+             id IN (SELECT id FROM tasks WHERE visible = 1
+                    ORDER BY created_at DESC LIMIT ?)
+             OR id IN (SELECT id FROM (${activeVisibleTaskSelect}))
+           )
+         ORDER BY created_at DESC`
       )
       .all(safeLimit) as TaskRow[]
     return rows.map(toTask)