feat(consent-tester): browser_profile-Param — echte Engine-Wahl im Scan (Phase 1.1)

run_consent_test nimmt jetzt browser_profile (browser_profiles.py): Firefox/Gecko,
WebKit/Safari oder Blink (Chromium-Default / Chrome-/Edge-Channel / Brave via
executable_path). Rückwärtskompatibel: None → Chromium wie bisher. Fundament für
die echte /scan-matrix (Stage-1.b-Shim), die als nächstes Profile durchreicht.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

consent-tester/services/consent_scanner.py

@@ -117,6 +117,7 @@ def _apply_edge_case_findings(result, url: str = "") -> None:
 
 async def run_consent_test(
     url: str, wait_secs: int = 10, categories: list[str] | None = None,
+    browser_profile: dict | None = None,
 ) -> ConsentTestResult:
     """Run 3-phase consent test on a URL.
 
@@ -124,6 +125,9 @@ async def run_consent_test(
         url: Website URL to test.
         wait_secs: Seconds to wait per phase.
         categories: Optional list of category names to test (empty = test all).
+        browser_profile: Optional profile dict from browser_profiles.py — waehlt
+            die Engine (blink/gecko/webkit) + channel (chrome/msedge) bzw.
+            executable_path (Brave). None = Chromium-Default (wie bisher).
     """
     result = ConsentTestResult()
     wait_ms = wait_secs * 1000
@@ -136,24 +140,37 @@ async def run_consent_test(
     from services.cmp_extractor import CMPCapture
     cmp_capture = CMPCapture()
 
+    _prof = browser_profile or {}
+    _engine = _prof.get("engine", "blink")
+    _chromium_args = [
+        "--no-sandbox",
+        "--disable-dev-shm-usage",
+        "--disable-blink-features=AutomationControlled",
+        "--window-size=1920,1080",
+        # P50c: Mercedes/Akamai Bot Manager crashed renderer
+        # without these (limits memory pressure + GPU init):
+        "--disable-gpu",
+        "--disable-software-rasterizer",
+        "--disable-background-timer-throttling",
+        "--disable-renderer-backgrounding",
+        "--disable-backgrounding-occluded-windows",
+        "--js-flags=--max-old-space-size=2048",
+    ]
+
     async with async_playwright() as p:
-        browser = await p.chromium.launch(
-            headless=True,
-            args=[
-                "--no-sandbox",
-                "--disable-dev-shm-usage",
-                "--disable-blink-features=AutomationControlled",
-                "--window-size=1920,1080",
-                # P50c: Mercedes/Akamai Bot Manager crashed renderer
-                # without these (limits memory pressure + GPU init):
-                "--disable-gpu",
-                "--disable-software-rasterizer",
-                "--disable-background-timer-throttling",
-                "--disable-renderer-backgrounding",
-                "--disable-backgrounding-occluded-windows",
-                "--js-flags=--max-old-space-size=2048",
-            ],
-        )
+        # Engine-Wahl je Profil: Firefox/Gecko, WebKit/Safari oder Blink
+        # (Chromium-Default / Chrome-/Edge-Channel / Brave via executable_path).
+        if _engine == "gecko":
+            browser = await p.firefox.launch(headless=True)
+        elif _engine == "webkit":
+            browser = await p.webkit.launch(headless=True)
+        else:
+            _launch: dict = {"headless": True, "args": _chromium_args}
+            if _prof.get("channel"):
+                _launch["channel"] = _prof["channel"]
+            if _prof.get("executable_path"):
+                _launch["executable_path"] = _prof["executable_path"]
+            browser = await p.chromium.launch(**_launch)
 
         try:
             # ── Phase A: Before consent ──────────────────────────