release: prepare Desktop 0.13.13

Prepare a Desktop-only patch for repeated activity-history reads during streaming and the supervision feedback sidebar layout. Keep Agent 0.13.3 and the database format unchanged; no Host update is required.

Update bilingual release notes, feature matrices, and validation evidence. Isolate this candidate from the original worktree and exclude its uncommitted supervision timeout tests. Validation passed 192 focused tests, an additional six-case Electron sidebar scenario, typecheck, lint, and release-note checks.

Release note: 减少流式活动历史的重复读取，修复监督反馈侧栏的按钮布局和目标名称显示；Agent 保持 0.13.3。

FEATURES.md

@@ -322,7 +322,7 @@ records are listed separately and do not introduce another feature status.
   failure, Agent `SIGKILL`/restart, and recovery from a reopened Desktop SQLite
   database. Successful tool START/END events appear exactly once, with no
   Prompt, provider, or tool replay observed. The current Agent source lock is
-  `0.13.3`, while the current Desktop release candidate is `0.13.12`; formal
+  `0.13.3`, while the current Desktop release candidate is `0.13.13`; formal
   publication status follows the separate Agent and Desktop
   release channels. Previous macOS validation covered native package installation,
   detached lifecycle, Attach, real Ask/Execute, and cancellation of tools in
@@ -748,7 +748,9 @@ records are listed separately and do not introduce another feature status.
 - [x] **Supervisor reviews, story graphs, and activity**: Review a selected scope
   and period, inspect saved result graphs and sources, confirm or revise entities,
   and preview local knowledge entity writes. Sidebar feedback follows or pins a
-  Conversation or Task and opens its matching result. Activity combines heartbeat
+  Conversation or Task and opens its matching result. It shows target names with
+  compact pin/refresh buttons and preserves long-title readability and keyboard
+  focus in narrow sidebars. Activity combines heartbeat
   and downstream review stages, including failures and links to older results.
   Automatic stages process only new, changed, or unprocessed source portions;
   no-change checks skip model calls. Manual review reprocesses bounded history.
@@ -843,9 +845,12 @@ records are listed separately and do not introduce another feature status.
 
 ### Open source, builds, and releases
 
-- Current source candidates are Desktop `0.13.12` and Agent `0.13.3`, with
+- The current Desktop candidate is `0.13.13`; published Agent `0.13.3` is unchanged, with
   OpenCode pinned to `1.18.29` and Continue to `1.5.47`. Publication status follows the independent
   Desktop and Agent release channels.
+- Desktop `0.13.13` reduces repeated activity-history reads during streaming saves
+  and fixes supervision feedback sidebar controls and target names. It adds no
+  database format migration over `0.13.12` and requires no Host update.
 - Desktop `0.13.12` adds Supervisor reviews, graphs, activity, and automatic
   incremental processing, reduces streaming activity writes, and improves Mermaid,
   usage totals, conversation duration, Git, notes, and notifications. Database
@@ -857,8 +862,8 @@ records are listed separately and do not introduce another feature status.
   and lint. The full local suite is not rerun at the user's request; full main-branch
   CI, its production build, native packaging, and publication verification remain
   pending. No local production build or packaging is part of this preparation.
-  Existing Linux x64 lifecycle evidence used eight real provider requests and
-  incremental-review evidence used three; neither covers the complete native matrix.
+  Desktop `0.13.12` and Agent `0.13.3` have completed their native release jobs;
+  this does not replace development-time real-Host scenario coverage.
 - Validation records remain separate from implementation status. Current-source
   storage validation covers real local and Linux x64 Host tool workloads,
   concurrent projects/conversations, cancellation, and lossless database migration.