chat: send cwd on every message instead of reading it back from session metadata

Simpler + more efficient than the previous per-turn GET /session: the client already
has the selected cwd, so it now sends it on every message (it's constant for a session).
The server uses msg.cwd directly for OpenCode's per-turn working-directory system prompt,
and still tags the cwd at creation for listing. Drops the getSession round-trip.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/workspaces/officerdev/src/apps/Chat/EmbeddableChat/useEmbeddableChat.ts

@@ -26,9 +26,21 @@ type UseEmbeddableChatParams = {
 };
 
 export function useEmbeddableChat(params: UseEmbeddableChatParams, onMessageComplete?: () => void) {
-  const { initialMessage, defaultInput = '', promptPrefix, cwd, sandboxed, autoSend = false, chat: externalChat } = params;
+  const {
+    initialMessage,
+    defaultInput = '',
+    promptPrefix,
+    cwd,
+    sandboxed,
+    autoSend = false,
+    chat: externalChat,
+  } = params;
 
-  const internalChat = useChat(params.sessionId, params.initialModel, { replaceUrl: params.replaceUrl ?? false, context: params.context, contextId: params.contextId });
+  const internalChat = useChat(params.sessionId, params.initialModel, {
+    replaceUrl: params.replaceUrl ?? false,
+    context: params.context,
+    contextId: params.contextId,
+  });
   const chat = externalChat ?? internalChat;
 
   const {
@@ -90,13 +102,14 @@ export function useEmbeddableChat(params: UseEmbeddableChatParams, onMessageComp
     let prompt = promptPrefix ? `${promptPrefix}\n\n${text}` : text;
     if (prefix) prompt = `${prefix}${prompt}`;
 
-    const cwdForFirst = !sessionId ? cwd : undefined;
+    // Send the cwd on every message (not just the first): OpenCode rebuilds its working-directory
+    // system prompt each turn, so it needs the cwd every time. It stays constant for a session.
     const displayText = promptPrefix ? text : undefined;
     sendPrompt(
       prompt,
       !sessionId && ids.length > 0 ? ids : undefined,
       images.length > 0 ? images : undefined,
-      cwdForFirst,
+      cwd,
       undefined,
       sandboxed,
       thinkingLevel,
@@ -149,7 +162,10 @@ export function useEmbeddableChat(params: UseEmbeddableChatParams, onMessageComp
       rafId = requestAnimationFrame(resizeTextarea);
     });
     observer.observe(textarea);
-    return () => { observer.disconnect(); cancelAnimationFrame(rafId); };
+    return () => {
+      observer.disconnect();
+      cancelAnimationFrame(rafId);
+    };
   }, []);
 
   // Auto-scroll to bottom on new messages