1 files changed, 28 insertions, 0 deletions
diff --git a/src/background/menu-translation.js b/src/background/menu-translation.js
new file mode 100644
index 0000000..1465c53
--- /dev/null
+++ b/src/background/menu-translation.js
@@ -0,0 +1,28 @@
+/**
+ * Context-menu translation entry (background).
+ *
+ * Receives the raw `menus.OnClickData.selectionText`, validates it through
+ * the shared pipeline and starts a translation without a sink. The popup
+ * observes results via the shared translation state (GET_POPUP_STATE).
+ */
+
+import { validateSelectionText, runTranslation, messageForCode } from './translation-service.js';
+import { createRequestId } from '../shared/messages.js';
+import { ERROR_CODES } from '../shared/constants.js';
+
+/**
+ * Start a translation from a context-menu selection.
+ * @param {*} selectionText raw value from menus.OnClickData
+ * @returns {{ok: boolean, requestId?: string, error?: string, message?: string}}
+ */
+export function startFromSelection(selectionText) {
+  const validated = validateSelectionText(selectionText);
+  if (!validated.ok) {
+    return { ok: false, error: validated.code, message: messageForCode(validated.code) };
+  }
+  const requestId = createRequestId();
+  // No sink: the popup polls GET_POPUP_STATE and receives streaming updates
+  // through the shared translation state.
+  void runTranslation({ text: validated.text, requestId, source: 'context-menu', sink: null });
+  return { ok: true, requestId };
+}
+\ No newline at end of file