feat(record): add popup quick-actions launcher and make record --url optional

Add a popup launcher + action-recording panel that builds a copyable
`bsk record start` prompt, add `--browser` targeting, and default `--url`
to https://example.com/ when omitted. Drop the popup browser-alias field.

apps/extension/src/content/RecordOverlay.tsx

@@ -1,5 +1,5 @@
 import { useTranslation } from "@browser-skill/i18n/react";
-import { RiCheckboxCircleLine } from "@remixicon/react";
+import { RiStopCircleLine } from "@remixicon/react";
 import { useEffect, useState } from "react";
 
 export interface RecordRequestData {
@@ -105,7 +105,7 @@ export function RecordOverlay({ request }: Props) {
             flexShrink: 0,
           }}
         >
-          <RiCheckboxCircleLine size={18} color="#fff" />
+          <RiStopCircleLine size={18} color="#fff" />
           {t("recordOverlay.finish")}
         </button>
       </div>

apps/extension/src/content/__tests__/record-capture.test.ts

@@ -1,6 +1,6 @@
 import { beforeEach, describe, expect, it, vi } from "vitest";
-import { handleRecordContentMessage, startRecordCapture } from "../record-capture";
 import { RECORD_STOP, type RecordStepPayload } from "@/lib/record-bridge";
+import { handleRecordContentMessage, startRecordCapture } from "../record-capture";
 
 vi.stubGlobal("chrome", {
   runtime: {
@@ -128,12 +128,8 @@ describe("record-capture semantic", () => {
     const capture = startRecordCapture("rec-press", (step) => steps.push(step));
     const input = document.querySelector("input")!;
     input.dispatchEvent(new FocusEvent("focusin", { bubbles: true }));
-    input.dispatchEvent(
-      new KeyboardEvent("keydown", { key: "a", bubbles: true }),
-    );
-    input.dispatchEvent(
-      new KeyboardEvent("keydown", { key: "Enter", bubbles: true }),
-    );
+    input.dispatchEvent(new KeyboardEvent("keydown", { key: "a", bubbles: true }));
+    input.dispatchEvent(new KeyboardEvent("keydown", { key: "Enter", bubbles: true }));
     capture.dispose();
     expect(steps.filter((s) => s.op === "press")).toEqual([
       expect.objectContaining({ op: "press", key: "Enter" }),

apps/extension/src/content/record-capture.ts

@@ -1,8 +1,4 @@
-import {
-  describeEventTarget,
-  describeTarget,
-  type TargetDescriptor,
-} from "@/lib/describe-target";
+import { describeEventTarget, describeTarget, type TargetDescriptor } from "@/lib/describe-target";
 import {
   isRecordCancelMessage,
   isRecordStartMessage,