fix(chat): image send 500 + table/newline formatting (v2026.07.20.1708)

backend/python/app/api/chat_media.py

@@ -1430,7 +1430,7 @@ async def _generate_media_task(ai_msg_id: str, ai_model_id: str, prompt: str, us
         logger.info(f"[_generate_media_task] 启动 media 生成 msg={ai_msg_id} model={ai_model_id} prompt={prompt[:60]!r}")
         caps = [c.lower() for c in (ai_model.capabilities or [])]
         is_video = "video" in caps
-        timeout_seconds = 300 if is_video else 90
+        timeout_seconds = 300 if is_video else 180
         try:
             result = await asyncio.wait_for(
                 _generate_media(db, ai_model, prompt, user_id),

backend/python/app/api/chat_service.py

@@ -1657,6 +1657,16 @@ async def _send_message_core(
 
 
 
+    # 媒体分支直接返回，不会进入 LLM 工具调用；提前初始化避免未绑定
+
+    called_skill_names = []
+
+
+
+    called_mcp_names = []
+
+
+
     if effective_skill_ids:
 
 

frontend/src/pages/front/ChatPage.css

@@ -471,10 +471,15 @@
 }
 
 .md-table td {
-  padding: 10px 14px;
+  padding: 8px 12px;
   border-bottom: 1px solid #EEF0F4;
   color: var(--color-text-primary);
   vertical-align: top;
+  line-height: 1.5;
+}
+
+.md-table td br {
+  line-height: 0.8;
 }
 
 .md-table tbody tr:last-child td {

frontend/src/pages/front/ChatPage.tsx

@@ -189,41 +189,8 @@ const MarkdownContent: React.FC<{ content: string }> = ({ content }) => {
       return '\x00MEDIA' + (mediaBlocks.length - 1) + '\x00';
     });
 
-    // 2.7 Extract Markdown tables: | h1 | h2 |\n|---|---| ... |
-    // 把整段表格替换为占位符，表格内容(已转义)放入 tableBlocks 数组
-    const tableBlocks: string[] = [];
-    text = text.replace(
-      /((?:^\|.+\|\r?\n)+^\|[\s\-:|]+\|\r?\n(?:^\|.+\|\r?\n?)+)/gm,
-      (_m: string, block: string) => {
-        const lines = block.trim().split(/\r?\n/).filter((l: string) => l.trim());
-        if (lines.length < 2) return block;
-        const headerCells = lines[0].split('|').slice(1, -1).map((c: string) => c.trim());
-        const alignCells = lines[1].split('|').slice(1, -1).map((c: string) => {
-          const t = c.trim();
-          const left = t.startsWith(':');
-          const right = t.endsWith(':');
-          if (left && right) return 'center';
-          if (right) return 'right';
-          if (left) return 'left';
-          return 'left';
-        });
-        const bodyRows = lines.slice(2).map((row: string) =>
-          row.split('|').slice(1, -1).map((c: string) => c.trim())
-        );
-        const thead = headerCells.map((c: string, i: number) =>
-          `<th style="text-align:${alignCells[i] || 'left'}">${c}</th>`
-        ).join('');
-        const tbody = bodyRows.map((r: string[]) =>
-          '<tr>' + r.map((c: string, i: number) =>
-            `<td style="text-align:${alignCells[i] || 'left'}">${c}</td>`
-          ).join('') + '</tr>'
-        ).join('');
-        const html = `<table class="md-table"><thead><tr>${thead}</tr></thead><tbody>${tbody}</tbody></table>`;
-        const idx = tableBlocks.length;
-        tableBlocks.push(html);
-        return '\x00TABLE' + idx + '\x00';
-      }
-    );
+    // 2.6 Normalize excessive blank lines in prose (code blocks already extracted)
+    text = text.replace(/\n{3,}/g, '\n\n').trim();
 
     // 2.8 LaTeX 数学公式：$$...$$（块级）和 $...$（行内）
     // 提取为占位符，渲染后用 KaTeX 处理
@@ -273,15 +240,58 @@ const MarkdownContent: React.FC<{ content: string }> = ({ content }) => {
     text = text.replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>');
     text = text.replace(/(?<!\w)\*(?!\*)(.+?)(?<!\*)\*(?!\w)/g, '<em>$1</em>');
 
+    // 7.5 Extract Markdown tables after inline formatting so cells support bold/italic/links.
+    // 表格提取放在加粗/链接之后，避免单元格内 **xxx** 原样显示；同时压缩单元格内多余 <br>。
+    const tableBlocks: string[] = [];
+    text = text.replace(
+      /((?:^\|.+\|\r?\n)+^\|[\s\-:|]+\|\r?\n(?:^\|.+\|\r?\n?)+)/gm,
+      (_m: string, block: string) => {
+        const lines = block.trim().split(/\r?\n/).filter((l: string) => l.trim());
+        if (lines.length < 2) return block;
+        const headerCells = lines[0].split('|').slice(1, -1).map((c: string) => c.trim());
+        const alignCells = lines[1].split('|').slice(1, -1).map((c: string) => {
+          const t = c.trim();
+          const left = t.startsWith(':');
+          const right = t.endsWith(':');
+          if (left && right) return 'center';
+          if (right) return 'right';
+          if (left) return 'left';
+          return 'left';
+        });
+        const normalizeCell = (cell: string) => {
+          return cell
+            .replace(/<br\s*\/?>\s*/gi, '<br/>')
+            .replace(/\n/g, '<br/>')
+            .replace(/(<br\/>){2,}/g, '<br/>')
+            .replace(/^(<br\/>)+|(<br\/>)+$/g, '');
+        };
+        const bodyRows = lines.slice(2).map((row: string) =>
+          row.split('|').slice(1, -1).map((c: string) => normalizeCell(c.trim()))
+        );
+        const thead = headerCells.map((c: string, i: number) =>
+          `<th style="text-align:${alignCells[i] || 'left'}">${normalizeCell(c)}</th>`
+        ).join('');
+        const tbody = bodyRows.map((r: string[]) =>
+          '<tr>' + r.map((c: string, i: number) =>
+            `<td style="text-align:${alignCells[i] || 'left'}">${c}</td>`
+          ).join('') + '</tr>'
+        ).join('');
+        const html = `<table class="md-table"><thead><tr>${thead}</tr></thead><tbody>${tbody}</tbody></table>`;
+        const idx = tableBlocks.length;
+        tableBlocks.push(html);
+        return '\x00TABLE' + idx + '\x00';
+      }
+    );
+
     // 8. Lists
     text = text.replace(/^\s*[-*] (.+)$/gm, '<li class="md-li">$1</li>');
     text = text.replace(/^\s*\d+\. (.+)$/gm, '<li class="md-li">$1</li>');
     // Wrap consecutive <li> in <ul>
     text = text.replace(/((?:<li class="md-li">[\s\S]*?<\/li>\n?)+)/g, '<ul class="md-ul">$1</ul>');
 
-    // 9. Convert double newlines to paragraph breaks, single to <br/>
+    // 9. Convert double newlines to paragraph breaks, single newlines to spaces
     text = text.replace(/\n\n/g, '</p><p class="md-p">');
-    text = text.replace(/\n/g, '<br/>');
+    text = text.replace(/\n/g, ' ');
 
     // 10. Restore code blocks and inline codes
     text = text.replace(/\x00CODEBLOCK(\d+)\x00/g, (_m: string, idx: string) => codeBlocks[parseInt(idx)] || '');