fix: repaint open review panel after palette accept/reject-all (restores dropped refresh)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/extension.ts

@@ -211,6 +211,7 @@ export function activate(context: vscode.ExtensionContext): CowritingApi | undef
         return;
       }
       const { applied, skipped } = await proposalController.acceptAllProposals(doc);
+      trackChangesPreviewController.refresh(doc);
       if (applied === 0 && skipped === 0) return;
       const skipNote = skipped > 0 ? `, ${skipped} skipped (target text changed — undo or reject)` : "";
       void vscode.window.showInformationMessage(
@@ -229,6 +230,7 @@ export function activate(context: vscode.ExtensionContext): CowritingApi | undef
         return;
       }
       const { reverted } = await proposalController.rejectAll(doc);
+      trackChangesPreviewController.refresh(doc);
       if (reverted > 0) {
         void vscode.window.showInformationMessage(
           `Cowriting: rejected ${reverted} proposal${reverted === 1 ? "" : "s"}.`,