fix: Correct parsing of git output blocks and improve stash UI accessibility

apps/server/src/routes/worktree/routes/commit-log.ts

@@ -48,7 +48,16 @@ export function createCommitLogHandler() {
       const commitBlocks = logOutput.split('---END---').filter((block) => block.trim());
 
       for (const block of commitBlocks) {
-        const lines = block.split('\n');
+        const allLines = block.split('\n');
+        // Skip leading empty lines that result from the split.
+        // After splitting on ---END---, subsequent blocks start with a newline,
+        // which creates an empty first element that shifts all field indices
+        // (hash becomes empty, shortHash becomes hash, etc.).
+        let startIndex = 0;
+        while (startIndex < allLines.length && allLines[startIndex].trim() === '') {
+          startIndex++;
+        }
+        const lines = allLines.slice(startIndex);
         if (lines.length >= 6) {
           const hash = lines[0].trim();
 

apps/server/src/services/branch-commit-log-service.ts

@@ -69,10 +69,19 @@ export async function getBranchCommitLog(
   // Parse the output into structured commit objects
   const commits: BranchCommit[] = [];
 
-  const commitBlocks = logOutput.split('---END---\n').filter((block) => block.trim());
+  const commitBlocks = logOutput.split('---END---').filter((block) => block.trim());
 
   for (const block of commitBlocks) {
-    const lines = block.split('\n');
+    const allLines = block.split('\n');
+    // Skip leading empty lines that result from the split.
+    // After splitting on ---END---, subsequent blocks start with a newline,
+    // which creates an empty first element that shifts all field indices
+    // (hash becomes empty, shortHash becomes hash, etc.).
+    let startIndex = 0;
+    while (startIndex < allLines.length && allLines[startIndex].trim() === '') {
+      startIndex++;
+    }
+    const lines = allLines.slice(startIndex);
     if (lines.length >= 6) {
       const hash = lines[0].trim();
 
@@ -80,13 +89,22 @@ export async function getBranchCommitLog(
       let files: string[] = [];
       try {
         const filesOutput = await execGitCommand(
-          ['diff-tree', '--no-commit-id', '--name-only', '-r', hash],
+          // -m causes merge commits to be diffed against each parent,
+          // showing all files touched by the merge (without -m, diff-tree
+          // produces no output for merge commits because they have 2+ parents)
+          ['diff-tree', '--no-commit-id', '--name-only', '-r', '-m', hash],
           worktreePath
         );
-        files = filesOutput
+        // Deduplicate: -m can list the same file multiple times
-          .trim()
+        // (once per parent diff for merge commits)
-          .split('\n')
+        files = [
-          .filter((f) => f.trim());
+          ...new Set(
+            filesOutput
+              .trim()
+              .split('\n')
+              .filter((f) => f.trim())
+          ),
+        ];
       } catch {
         // Ignore errors getting file list
       }

apps/ui/src/components/views/board-view/dialogs/view-stashes-dialog.tsx

@@ -83,6 +83,7 @@ function StashEntryItem({
 }) {
   const [expanded, setExpanded] = useState(false);
   const isBusy = isApplying || isDropping;
+  const hasFiles = stash.files && stash.files.length > 0;
 
   // Clean up the stash message for display
   const displayMessage =
@@ -97,30 +98,17 @@ function StashEntryItem({
     >
       {/* Header */}
       <div className="flex items-start gap-3 p-3">
-        {/* Expand toggle & stash icon */}
+        {/* Stash icon (static) */}
-        <button
+        <div className="flex items-center pt-0.5 text-muted-foreground">
-          onClick={() => setExpanded(!expanded)}
-          className="flex items-center gap-1 pt-0.5 text-muted-foreground hover:text-foreground transition-colors"
-          disabled={stash.files.length === 0}
-        >
-          {stash.files.length > 0 ? (
-            expanded ? (
-              <ChevronDown className="w-3.5 h-3.5" />
-            ) : (
-              <ChevronRight className="w-3.5 h-3.5" />
-            )
-          ) : (
-            <span className="w-3.5" />
-          )}
           <Archive className="w-3.5 h-3.5" />
-        </button>
+        </div>
 
         {/* Content */}
         <div className="flex-1 min-w-0">
           <div className="flex items-start justify-between gap-2">
             <div className="min-w-0">
               <p className="text-sm font-medium leading-snug break-words">{displayMessage}</p>
-              <div className="flex flex-wrap items-center gap-x-2 gap-y-1 mt-1 text-xs text-muted-foreground">
+              <div className="flex flex-wrap items-center gap-x-3 gap-y-1 mt-1.5 text-xs text-muted-foreground">
                 <span className="inline-flex items-center gap-1 font-mono bg-muted px-1.5 py-0.5 rounded text-[10px]">
                   stash@{'{' + stash.index + '}'}
                 </span>
@@ -143,11 +131,21 @@ function StashEntryItem({
                     {formatRelativeDate(stash.date)}
                   </time>
                 </span>
-                {stash.files.length > 0 && (
+                {hasFiles && (
-                  <span className="inline-flex items-center gap-1">
+                  <button
+                    onClick={() => setExpanded(!expanded)}
+                    className="inline-flex items-center gap-1 hover:text-foreground transition-colors cursor-pointer"
+                    aria-expanded={expanded}
+                    aria-label={`${expanded ? 'Collapse' : 'Expand'} file list, ${stash.files.length} file${stash.files.length !== 1 ? 's' : ''}`}
+                  >
+                    {expanded ? (
+                      <ChevronDown className="w-3 h-3" />
+                    ) : (
+                      <ChevronRight className="w-3 h-3" />
+                    )}
                     <FileText className="w-3 h-3" />
                     {stash.files.length} file{stash.files.length !== 1 ? 's' : ''}
-                  </span>
+                  </button>
                 )}
               </div>
             </div>
@@ -191,7 +189,7 @@ function StashEntryItem({
       </div>
 
       {/* Expanded file list */}
-      {expanded && stash.files.length > 0 && (
+      {expanded && hasFiles && (
         <div className="border-t px-3 py-2 bg-muted/30">
           <div className="space-y-0.5">
             {stash.files.map((file) => (