feat(browser): rework element annotation and picker toolbar

Element annotation is now free-text: dropped the Fix/Change/Question/
Approve intent pills and the intent field, so the user just says what
they want. The card uses the shared Button and is titled "Annotate
element".

Toolbar: the element picker and DevTools are no longer dev-gated and
work in prod; DevTools uses a wrench icon, and the old clipboard "grab"
is now a Camera "Screenshot element" tool. Each toolbar button
highlights only its own mode, and the copy toast reflects whether a
screenshot image was actually captured.

packages/app/src/i18n/resources/es.ts

@@ -426,22 +426,17 @@ export const es: TranslationResources = {
         enterUrl: "IngreseURL",
         openDevTools: "Abrir herramientas de desarrollo del navegador",
         cancelSelector: "Cancelar selector de elementos",
-        selectElement: "Seleccionar elemento",
-        grabElement: "Copiar elemento al portapapeles",
-        grabElementLabel: "elemento",
-        grabFailed: "No se pudo copiar el elemento",
+        annotateElement: "Anotar elemento",
+        screenshotElement: "Capturar elemento",
+        screenshotCopied: "Captura copiada al portapapeles",
+        elementCopied: "Elemento copiado al portapapeles",
+        screenshotFailed: "No se pudo copiar la captura",
       },
       annotate: {
-        title: "Enviar comentarios al agente",
-        placeholder: "Describe qué debería cambiar…",
+        title: "Anotar elemento",
+        placeholder: "Mensaje al agente sobre este elemento…",
         submit: "Adjuntar",
         cancel: "Cancelar",
-        intents: {
-          fix: "Corregir",
-          change: "Cambiar",
-          question: "Pregunta",
-          approve: "Aprobar",
-        },
       },
       devices: {
         label: "Tamaño del dispositivo",