fix: preserve remote task success after recoverable tool errors

Align remote ACP tool recovery with local runtime behavior when the model responds after a tool failure and completes normally. Preserve original errors and derive recovery state from committed remote events so reconnecting safely replays partial terminal events.

Validation: 461 focused tests, typecheck, lint, and shared Linux Host recovery scenarios passed. Full-suite validation has two pre-existing heartbeat migration fixture failures involving the pinned column.

Release note: 修复远端 Agent 在读取等工具失败后已正常回复，任务仍被误判为失败的问题，并修复断线重连时的工具状态恢复。

src/main/agent/runtime.ts

@@ -158,6 +158,8 @@ export type AgentExecutionRequest = Omit<AgentRequest, 'workMode'> & {
   remoteRecoveryOnly?: boolean
   /** Main-only durable tool state used to merge partial recovery updates. */
   remoteRecoveredTools?: readonly RemoteRecoveredTool[]
+  /** Derived from committed task events, including text before disconnect. */
+  remoteHasResponseTextAfterToolFailure?: boolean
   /** Main-only durable native subagent state for partial recovery updates. */
   remoteRecoveredSubagents?: readonly RemoteRecoveredSubagent[]
 }