fix: simulate Enter key after clipboard paste for chat submission

extension/src/extension.ts

@@ -300,12 +300,31 @@ async function handleCommand(filePath: string) {
             }
 
             if (!submitted) {
-                // Fallback: paste into focused input if query param didn't work
+                // Fallback: paste into focused input then simulate Enter
                 const oldClipboard = await vscode.env.clipboard.readText();
                 await vscode.env.clipboard.writeText(command.text);
                 await vscode.commands.executeCommand('editor.action.clipboardPasteAction');
                 await vscode.env.clipboard.writeText(oldClipboard);
-                console.log('Gravity Bridge: fallback to clipboard paste (no submit)');
+
+                // Wait for paste to complete, then simulate Enter
+                await new Promise(resolve => setTimeout(resolve, 200));
+
+                // Try multiple ways to submit/press Enter
+                const enterMethods = [
+                    'workbench.action.chat.acceptInput',
+                    'default:type',  // with \n
+                ];
+                for (const method of enterMethods) {
+                    try {
+                        if (method === 'default:type') {
+                            await vscode.commands.executeCommand(method, { text: '\n' });
+                        } else {
+                            await vscode.commands.executeCommand(method);
+                        }
+                        console.log(`Gravity Bridge: Enter sent via "${method}"`);
+                        break;
+                    } catch { /* try next */ }
+                }
             }
         }