feat: reply from mobile Filed (Closes #876)

frontend/dashboard.css

@@ -492,6 +492,7 @@ textarea { resize: vertical; min-height: 120px; }
 .issue-edit-actions { display:grid; grid-template-columns:1fr 1fr; gap:8px; }
 .issue-comment { padding:10px 0; border-bottom:1px solid #1b2d45; }
 .issue-comment-composer { display:grid; gap:8px; margin-top:16px; }
+.issue-comment-composer textarea { min-height:96px; }
 .issue-comment-composer button { min-height:44px; width:100%; }
 .visually-hidden { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
 .issue-attachment-controls { display:flex; max-width:100%; }
@@ -521,14 +522,14 @@ textarea { resize: vertical; min-height: 120px; }
 .issue-milestone-editor { display:grid; gap:8px; max-width:100%; margin:14px 0; padding:12px; border:1px solid #2a496e; border-radius:12px; }
 .issue-milestone-editor select { width:100%; padding:8px; border-radius:8px; border:1px solid #1f3a5f; background:#0b1526; color:var(--text); }
 .work-milestone-filter, .issue-milestone-editor select, .issue-milestone-editor button { min-height:44px; }
-#issue-sheet.read-only .issue-comment-composer,
+#issue-sheet.read-only .issue-attachment-controls,
+#issue-sheet.read-only .issue-attachment-preview,
 #issue-sheet.read-only #issue-planning,
 #issue-sheet.read-only #issue-handoff,
 #issue-sheet.read-only #release-issue,
 #issue-sheet.read-only #close-issue,
 #issue-sheet.read-only .detail-defer,
 #issue-sheet.read-only #issue-blockers,
-#issue-sheet.read-only #load-older-issue-comments,
 #issue-sheet.read-only #retry-issue-comment-actions { display:none; }
 .issue-sheet-actions { position:sticky; bottom:0; z-index:3; display:grid; gap:8px; margin-top:14px; padding:10px 4px; padding-bottom:calc(10px + env(safe-area-inset-bottom)); background:rgba(11,21,38,.98); border-top:1px solid #2a496e; }
 .issue-sheet-actions button, .issue-sheet-actions a { min-height:44px; display:flex; align-items:center; justify-content:center; }

frontend/dashboard.js

@@ -3329,6 +3329,7 @@
     qs('#load-older-issue-comments').hidden = true;
     qs('#issue-conversation-status').textContent = 'Loading newest messages…';
     qs('#issue-comment').value = issueController.loadDraft(item);
+    qs('#issue-comment-title').textContent = readOnly ? 'Add follow-up' : 'Add comment';
     qs('#issue-comment-status').textContent = '';
     qs('#issue-handoff').open = false;
     qs('#issue-handoff-recipient').innerHTML = '<option value="">Select a teammate</option>';
@@ -3379,9 +3380,8 @@
         'Assigned to ' + detail.assignees.join(', ') : 'No assignee reported';
       if (readOnly) paintIssueConversation(issueConversation.snapshot(), null);
       else renderIssueConversation(issueConversation.snapshot());
-      if (readOnly) qs('#load-older-issue-comments').hidden = true;
       qs('#open-issue-gitea').href = detail.url || item.url || '#';
-      qs('#issue-sheet-status').textContent = readOnly ? 'Filed issue ready · read-only' :
+      qs('#issue-sheet-status').textContent = readOnly ? 'Filed issue ready · follow-up enabled' :
         'Issue ready · ' + (detail.state || 'open');
       qs('#edit-issue-content').disabled = false;
       const dueDraft = issueController.loadDueDateDraft(item);
@@ -5470,7 +5470,11 @@
     button.disabled = true;
     qs('#issue-conversation-status').textContent = 'Loading older messages…';
     try {
-      renderIssueConversation(await issueConversation.loadOlder());
+      if (issueController.readOnly(selectedIssue)) {
+        paintIssueConversation(await issueConversation.loadOlder(), null);
+      } else {
+        renderIssueConversation(await issueConversation.loadOlder());
+      }
       panel.scrollTop += panel.scrollHeight - previousHeight;
     } catch (error) {
       qs('#issue-conversation-status').textContent = error.message + ' Loaded messages and your draft are safe; retry.';
@@ -5703,7 +5707,11 @@
     }
     try {
       const comment = await issueController.comment(selectedIssue, preparedBody);
-      if (issueConversation) renderIssueConversation(issueConversation.append(comment));
+      if (issueConversation) {
+        const conversation = issueConversation.append(comment);
+        if (issueController.readOnly(selectedIssue)) paintIssueConversation(conversation, null);
+        else renderIssueConversation(conversation);
+      }
       qs('#issue-comment').value = '';
       issueAttachmentController.clear();
       qs('#issue-comment-status').textContent = 'Comment posted.';

frontend/issue-sheet.js

@@ -48,10 +48,12 @@ function createIssueSheet({ fetchJson, storage, createConversationPager = global
       });
     },
     conversation(item, initialPage) {
+      const access = this.readOnly(item) ? '&access=filed' : '';
       const pager = createConversationPager({
-        loadPage: page => fetchJson(issuePath(item) + '/comments?page=' + encodeURIComponent(page) + '&limit=20', {
-          headers: { Accept: 'application/json' },
-        }),
+        loadPage: page => fetchJson(
+          issuePath(item) + '/comments?page=' + encodeURIComponent(page) + '&limit=20' + access,
+          { headers: { Accept: 'application/json' } },
+        ),
       });
       pager.reset(initialPage || { comments: [], page: 1, older_page: null, total: 0 });
       return pager;
@@ -266,7 +268,8 @@ function createIssueSheet({ fetchJson, storage, createConversationPager = global
         operationId = storage?.getItem(operationKey(item)) || String(createOperationId()).slice(0, 128);
         storage?.setItem(operationKey(item), operationId);
       } catch (_error) { operationId = String(createOperationId()).slice(0, 128); }
-      commentRequest = fetchJson(issuePath(item) + '/comments', {
+      const access = this.readOnly(item) ? '?access=filed' : '';
+      commentRequest = fetchJson(issuePath(item) + '/comments' + access, {
         method: 'POST',
         headers: { Accept: 'application/json', 'Content-Type': 'application/json', 'Idempotency-Key': operationId },
         body: JSON.stringify({ body }),