fix: stop subagent history from exhausting disk space

Repeated full subagent progress snapshots could grow the desktop database to
many gigabytes during ordinary long-running tasks. Local and managed SSH
writes now retain lossless progress changes while preserving conversation
snapshots, event identities, remote replay deduplication and transaction rollback.

Upgrade existing history in bounded worker-thread batches, show progress and
retry controls, and reclaim freed disk space after conversion. Schema 34 cannot
be opened by older clients; a pre-upgrade backup is required for client rollback.
Document reusable database migration guidance and the verified large-database,
portable, local Runtime and Linux Host evidence.

Prepare Desktop 0.13.1 with the approved bilingual notes and aligned feature
lists. Agent remains 0.11.24. Final candidate validation and production builds
will run on main CI, as requested, without additional local release testing.

Release note: 修复长任务和子任务造成的数据库异常膨胀；升级时自动整理旧记录并回收空间，保留聊天、执行详情和结果，并支持退出后继续处理。

resources/release-notes.json

@@ -1,6 +1,40 @@
 {
   "formatVersion": 1,
   "releases": [
+    {
+      "version": "0.13.1",
+      "releasedAt": "2026-09-13",
+      "notes": {
+        "zh-CN": {
+          "highlights": [],
+          "features": [],
+          "fixes": [
+            "**修复数据库异常膨胀**：长任务和子任务不再反复保存整份执行过程。首次启动自动整理旧记录并回收磁盘空间，保留聊天、执行详情和结果。",
+            "**浏览器不再遮挡弹窗**：打开项目设置、知识库实例等弹窗时，内置网页会正确让出显示区域。关闭弹窗后恢复原网页，不丢失页面状态。",
+            "**知识库配置更清楚**：长名称和长参数表单不再挤压来源选择控件。切换远端知识库时自动名称随之更新，手工填写的名称保持不变。",
+            "**更新说明恢复显示**：修复历史更新说明增长后，本次更新内容可能无法加载的问题。当前版本说明可正常显示并确认，重启后不再重复弹出。"
+          ],
+          "notices": [
+            "整理较大的历史数据库可能需要较长时间和额外磁盘空间，支持退出后下次继续。升级后的数据库不能由旧版客户端打开，需要回退时请保留升级前备份。",
+            "Agent 保持 **0.11.24**，本次不重新发布 Agent。"
+          ]
+        },
+        "en-US": {
+          "highlights": [],
+          "features": [],
+          "fixes": [
+            "**Fix excessive database growth**: Long-running tasks and subagents no longer repeatedly save the entire execution history. The first launch compacts existing records and reclaims disk space while preserving chats, execution details, and results.",
+            "**Keep dialogs above embedded webpages**: Embedded webpages now yield their display area when project settings, knowledge-instance dialogs, and other overlays open. Closing the overlay restores the original webpage without losing its state.",
+            "**Clearer knowledge configuration**: Long names and parameter forms no longer squeeze source-selection controls. Automatically filled names follow the selected remote knowledge base, while manually entered names are preserved.",
+            "**Restore release-note display**: Fixed an issue where growing historical release notes could prevent the current update notes from loading. Current-version notes can be displayed and acknowledged without appearing again after restart."
+          ],
+          "notices": [
+            "Large history databases may require substantial processing time and extra disk space; you can quit and continue on the next launch. Older clients cannot open the upgraded database, so retain a pre-upgrade backup if rollback is needed.",
+            "Agent remains at **0.11.24** and is not republished."
+          ]
+        }
+      }
+    },
     {
       "version": "0.13.0",
       "releasedAt": "2026-09-13",