feat: add workspace files to chat from Files and Changes

* feat(app): open changed files from context menu

* fix(app): preserve changed-file row behavior

* feat(app): add changed files to open chats

* feat(app): share file actions across explorer and changes

* feat(app): attach workspace files to focused chat

* feat(app): drag workspace files into chat

* refactor(app): use file actions menu for changed files

* fix(app): open changed-file actions on right click

* test(app): cover direct file attachment flow

* fix(app): enable add to chat on native

* fix(app): align workspace file pane rows

* refactor(app): simplify workspace file attachments

* fix(app): preserve uploaded file draft attachments

---------

Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>

packages/app/src/panels/agent-panel.tsx

@@ -1160,8 +1160,16 @@ const ChatAgentReadyContent = memo(function ChatAgentReadyContent({
   });
   // Stabilize the agentInputDraft object identity so that memo(AgentComposerSection) can bail out
   // when only toast state changes (which does not affect any draft field).
-  const { text, setText, attachments, setAttachments, clear, isHydrated, composerState } =
-    rawAgentInputDraft;
+  const {
+    text,
+    setText,
+    attachments,
+    setAttachments,
+    clear,
+    isHydrated,
+    attachmentFocusRequestId,
+    composerState,
+  } = rawAgentInputDraft;
   const agentInputDraft = useMemo(
     (): AgentInputDraft => ({
       text,
@@ -1170,9 +1178,19 @@ const ChatAgentReadyContent = memo(function ChatAgentReadyContent({
       setAttachments,
       clear,
       isHydrated,
+      attachmentFocusRequestId,
       composerState,
     }),
-    [text, setText, attachments, setAttachments, clear, isHydrated, composerState],
+    [
+      text,
+      setText,
+      attachments,
+      setAttachments,
+      clear,
+      isHydrated,
+      attachmentFocusRequestId,
+      composerState,
+    ],
   );
   const streamSection = (
     <RenderProfile id={`AgentStreamSection:${agentId}`}>
@@ -1537,6 +1555,7 @@ function ActiveAgentComposer({
       <Composer
         agentId={agentId}
         serverId={serverId}
+        workspaceId={workspaceId}
         externalKeyboardShift
         isPaneFocused={isPaneFocused}
         value={agentInputDraft.text}
@@ -1548,6 +1567,7 @@ function ActiveAgentComposer({
         cwd={cwd}
         clearDraft={agentInputDraft.clear}
         autoFocus={isPaneFocused}
+        autoFocusKey={String(agentInputDraft.attachmentFocusRequestId)}
         isSubmitLoading={isSubmitLoading}
         onAttentionInputFocus={onAttentionInputFocus}
         onAttentionPromptSend={onAttentionPromptSend}