feat(desktop): polish desktop shell and shared WebUI surfaces (#4195)

* feat(desktop): add native host scaffold

* feat(webui): track turns and usage in gateway

* feat(webui): polish desktop chat experience

* feat(apps): add ArcGIS and Joplin logos

* feat(desktop): polish shell and shared surfaces

* fix(webui): avoid preview chips for glob references

* test: align CI expectations for token fallback

* feat(webui): preview prompt rail entries

* feat(webui): add prompt navigator drawer

* style(webui): refine prompt navigator placement

* style(webui): align prompt navigator with header actions

* style(webui): simplify prompt navigator header

* refactor(webui): clean thread resource refresh

* feat(desktop): add native reply notifications

* fix(webui): preserve desktop restart and replay state

* fix(desktop): harden gateway proxy startup

* fix(web): fall back when readability is unavailable

* fix(desktop): hide window instead of closing on macos

* fix(webui): unify desktop header actions

* fix(webui): simplify prompt history rows

* fix(desktop): log notification delivery failures

* chore(desktop): clean source package artifacts

* fix(cron): support one-time relative reminders

* fix(webui): reveal scroll button in place

* Revert "fix(cron): support one-time relative reminders"

This reverts commit 4c4661da120a3c7283e0768412bae48604e7390b.

* refactor(webui): extract token usage heatmap

* docs(desktop): clarify contributor guides

---------

Co-authored-by: chengyongru <2755839590@qq.com>

webui/src/components/thread/AgentActivityCluster.tsx

@@ -173,6 +173,7 @@ interface AgentActivityClusterProps {
   turnLatencyMs?: number;
   cliApps?: CliAppInfo[];
   mcpPresets?: McpPresetInfo[];
+  onOpenFilePreview?: (path: string) => void;
 }
 
 /**
@@ -186,6 +187,7 @@ export function AgentActivityCluster({
   turnLatencyMs,
   cliApps = [],
   mcpPresets = [],
+  onOpenFilePreview,
 }: AgentActivityClusterProps) {
   const { t } = useTranslation();
   const fileEdits = useMemo(
@@ -423,6 +425,7 @@ export function AgentActivityCluster({
         added={added}
         deleted={deleted}
         hasDiffStats={hasDiffStats}
+        onOpenFilePreview={onOpenFilePreview}
       />
     );
   }
@@ -449,6 +452,8 @@ export function AgentActivityCluster({
           <FileReferenceChip
             path={singleFilePath}
             tooltipPath={singleFileTooltipPath}
+            previewPath={singleFileTooltipPath || singleFilePath}
+            onOpen={onOpenFilePreview}
             active={hasLiveEditingFiles}
             className="-my-0.5 min-w-0"
             textClassName="text-xs"
@@ -494,6 +499,7 @@ export function AgentActivityCluster({
                       key={m.id}
                       text={m.reasoning ?? ""}
                       streaming={isTurnStreaming && !!m.reasoningStreaming}
+                      onOpenFilePreview={onOpenFilePreview}
                     />
                   );
                 }
@@ -510,7 +516,12 @@ export function AgentActivityCluster({
                 }
                 return null;
               })}
-              {fileEdits.length ? <FileEditGroup edits={fileEdits} /> : null}
+              {fileEdits.length ? (
+                <FileEditGroup
+                  edits={fileEdits}
+                  onOpenFilePreview={onOpenFilePreview}
+                />
+              ) : null}
             </div>
           </div>
         </div>
@@ -537,6 +548,7 @@ function FileEditFlatActivity({
   added,
   deleted,
   hasDiffStats,
+  onOpenFilePreview,
 }: {
   edits: FileEditSummary[];
   active: boolean;
@@ -550,6 +562,7 @@ function FileEditFlatActivity({
   added: number;
   deleted: number;
   hasDiffStats: boolean;
+  onOpenFilePreview?: (path: string) => void;
 }) {
   const showRows = edits.length > 1 || edits.some((edit) => edit.status === "error" || edit.pending);
   return (
@@ -569,6 +582,8 @@ function FileEditFlatActivity({
           <FileReferenceChip
             path={singleFilePath}
             tooltipPath={singleFileTooltipPath}
+            previewPath={singleFileTooltipPath || singleFilePath}
+            onOpen={onOpenFilePreview}
             active={hasLiveEditingFiles}
             className="-my-0.5 min-w-0"
             textClassName="text-xs"
@@ -583,7 +598,7 @@ function FileEditFlatActivity({
       </div>
       {showRows ? (
         <div className="mt-0.5 pl-4">
-          <FileEditGroup edits={edits} />
+          <FileEditGroup edits={edits} onOpenFilePreview={onOpenFilePreview} />
         </div>
       ) : null}
     </div>