feat: add message queue functionality with auto-send and queue mode toggle

- Improved development server hot module replacement (HMR) by reusing OpenCode processes.
- Introduced queued message mode with batching and idle auto-send, including support for attachments.
- Added a toggle for queue mode in OpenChamber settings with persistence across sessions.
- Updated various components to handle queued messages, including ChatInput and QueuedMessageChips.
- Modified settings payload and desktop settings to include queue mode configuration.
- Enhanced message sending logic to support additional parts for queued messages.

packages/ui/src/lib/opencode/client.ts

@@ -393,6 +393,16 @@ class OpencodeService {
       filename?: string;
       url: string;
     }>;
+    /** Additional text/file parts to include (for batch sending queued messages) */
+    additionalParts?: Array<{
+      text: string;
+      files?: Array<{
+        type: 'file';
+        mime: string;
+        filename?: string;
+        url: string;
+      }>;
+    }>;
     messageId?: string;
     agentMentions?: Array<{ name: string; source?: { value: string; start: number; end: number } }>;
   }): Promise<string> {
@@ -433,6 +443,28 @@ class OpencodeService {
       });
     }
 
+    // Add additional parts (for batch/queued messages)
+    if (params.additionalParts && params.additionalParts.length > 0) {
+      for (const additional of params.additionalParts) {
+        if (additional.text && additional.text.trim()) {
+          parts.push({
+            type: 'text',
+            text: additional.text
+          });
+        }
+        if (additional.files && additional.files.length > 0) {
+          for (const file of additional.files) {
+            parts.push({
+              type: 'file',
+              mime: file.mime,
+              filename: file.filename,
+              url: file.url
+            });
+          }
+        }
+      }
+    }
+
     if (params.agentMentions && params.agentMentions.length > 0) {
       const [first] = params.agentMentions;
       if (first?.name) {