fix: keep replies streaming while switching windows

Switching away from the desktop window and back could mark a reply that was
still being generated as "上次运行意外中断", freeze its output partway through,
and push the next message into the pending queue even though nothing had
actually failed. The conversation area also shifted on each switch because the
OpenCode runtime controls were unmounted and re-detected on every refresh.

Reading the conversation store no longer treats an in-progress reply as
interrupted; only startup recovery marks a run that an application exit truly
cut off. Runtime feature detection is now keyed on the resolved runtime scope,
so the OpenCode toolbar and manual Compact control stay in place across
refreshes. No request timeout or recovery behavior changed.

Release note: 修复来回切换桌面窗口时，正在生成的回复被误判为"上次运行意外中断"、输出中途停住、之后发送的消息只能进入待发送队列的问题。使用 OpenCode Runtime 时，会话区也不再因重复检测专属功能而抖动。

src/main/assistant/assistant-database.ts

@@ -211,7 +211,6 @@ type MessageRow = {
   state: ConversationSnapshot['messages'][number]['state']
   metadata_json: string
   created_at: string
-  remote_recoverable?: number
 }
 
 type MagicNoteRow = {
@@ -1110,38 +1109,31 @@ function toConversationSnapshot(
       : {}),
     title: conversation.title,
     updatedAt: Date.parse(conversation.updated_at),
+    // Startup recovery is the only authority for interruption: it persists
+    // the terminal state once. Deriving it while reading would also hit
+    // messages that are streaming right now, because the renderer keeps
+    // saving them during a live run.
     messages: messages.map((message) => {
       const metadata = JSON.parse(
         message.metadata_json
       ) as MessageMetadata
-      const interrupted =
-        message.state === 'streaming' &&
-        message.remote_recoverable !== 1
       return {
         id: message.id,
         queueItemId: metadata.queueItemId,
         role: message.role,
         content: message.content,
         reasoning: metadata.reasoning,
-        blocks: interrupted
-          ? interruptActiveToolBlocks(metadata.blocks)
-          : metadata.blocks,
+        blocks: metadata.blocks,
         displayCaptureTruncated:
           metadata.displayCaptureTruncated,
         createdAt:
           metadata.createdAt ?? Date.parse(message.created_at),
-        state: interrupted ? ('error' as const) : message.state,
-        status: interrupted
-          ? interruptedMessageStatus
-          : metadata.status,
+        state: message.state,
+        status: metadata.status,
         contextCompression: metadata.contextCompression,
         contextCompressions: metadata.contextCompressions,
-        tools: interrupted
-          ? interruptActiveTools(metadata.tools)
-          : metadata.tools,
-        subagents: interrupted
-          ? interruptActiveSubagents(metadata.subagents)
-          : metadata.subagents,
+        tools: metadata.tools,
+        subagents: metadata.subagents,
         sources: metadata.sources,
         sourceReferences: metadata.sourceReferences,
         knowledgeRetrieval: metadata.knowledgeRetrieval,
@@ -2604,18 +2596,10 @@ export class AssistantDatabase {
       .all() as ConversationRow[]
     const messageStatement = database.prepare(
       `SELECT id, conversation_id, role, content, state, metadata_json,
-              created_at, remote_recoverable
+              created_at
        FROM (
          SELECT id, conversation_id, role, content, state, metadata_json,
-                created_at, sequence,
-                EXISTS(
-                  SELECT 1 FROM tasks
-                  WHERE tasks.id = messages.request_id
-                    AND tasks.remote_recoverable = 1
-                    AND tasks.status IN (
-                      'running', 'waiting_approval', 'interrupted'
-                    )
-                ) AS remote_recoverable
+                created_at, sequence
          FROM messages
          WHERE conversation_id = ?
          ORDER BY sequence DESC
@@ -2651,18 +2635,10 @@ export class AssistantDatabase {
     const messages = database
       .prepare(
         `SELECT id, conversation_id, role, content, state, metadata_json,
-                created_at, remote_recoverable
+                created_at
          FROM (
            SELECT id, conversation_id, role, content, state,
-                  metadata_json, created_at, sequence,
-                  EXISTS(
-                    SELECT 1 FROM tasks
-                    WHERE tasks.id = messages.request_id
-                      AND tasks.remote_recoverable = 1
-                      AND tasks.status IN (
-                        'running', 'waiting_approval', 'interrupted'
-                      )
-                  ) AS remote_recoverable
+                  metadata_json, created_at, sequence
            FROM messages
            WHERE conversation_id = ?
            ORDER BY sequence DESC