feat: apply review suggestions across files

Closes #1386

frontend/pull-sheet.js

@@ -575,9 +575,10 @@ function bindFeedbackControls(doc, controller, getSelected, getDetail, getLogin)
     if (!active?.suggestion) return;
     const pending = active.suggestion;
     const path = pending.file.path;
-    const stagedPath = Object.keys(active.batch)[0];
-    if (stagedPath && stagedPath !== path) {
-      qs('#pull-feedback-status').textContent = 'Commit the staged file before batching suggestions from another file.';
+    const stagedCount = Object.values(active.batch)
+      .reduce((total, file) => total + file.suggestions.length, 0);
+    if (stagedCount >= 8) {
+      qs('#pull-feedback-status').textContent = 'Commit this bounded batch before staging more suggestions.';
       return;
     }
     const entry = active.batch[path] || {file:pending.file, suggestions:[]};
@@ -633,10 +634,10 @@ function bindFeedbackControls(doc, controller, getSelected, getDetail, getLogin)
     qs('#pull-feedback-status').textContent = 'Committing and verifying all suggested changes…';
     try {
       const result = await controller.commitFeedbackBatch(active.item, {
-        file:{
-          path:entries[0].file.path, content:entries[0].content,
-          expectedBlobSha:entries[0].file.blob_sha,
-        },
+        files:entries.map(entry => ({
+          path:entry.file.path, content:entry.content,
+          expectedBlobSha:entry.file.blob_sha,
+        })),
         suggestionCount:count, message, expectedHeadSha:active.detail.head_sha,
       });
       active.detail.head_sha = result.head_sha;
@@ -1064,16 +1065,19 @@ function createPullSheet({ fetchJson, storage, onState, createConversationPager
         method:'POST',
         headers:{ Accept:'application/json', 'Content-Type':'application/json' },
         body:JSON.stringify({
-          file:{
-            path:draft.file.path, content:draft.file.content,
-            expected_blob_sha:draft.file.expectedBlobSha,
-          },
+          files:draft.files.map(file => ({
+            path:file.path, content:file.content,
+            expected_blob_sha:file.expectedBlobSha,
+          })),
           suggestion_count:draft.suggestionCount,
           message:draft.message, expected_head_sha:draft.expectedHeadSha,
         }),
       }).then(result => {
+        const expectedPaths = draft.files.map(file => file.path);
         if (!result?.head_sha || result.head_sha === draft.expectedHeadSha ||
-            result.path !== draft.file.path || result.suggestion_count !== draft.suggestionCount) {
+            !Array.isArray(result.paths) || result.paths.length !== expectedPaths.length ||
+            result.paths.some((path, index) => path !== expectedPaths[index]) ||
+            result.suggestion_count !== draft.suggestionCount) {
           throw new Error('The suggestion batch was not confirmed.');
         }
         return result;