feat: improve SPA scraping and increase test coverage

- Add SPA support for Playwright with wait_for_network_idle and extra_wait_ms
- Add BaseStore.get_spa_config() and requires_playwright() methods
- Implement AliExpress SPA config with JSON price extraction patterns
- Fix Amazon price parsing to prioritize whole+fraction combination
- Fix AliExpress regex patterns (remove double backslashes)
- Add CLI tests: detect, doctor, fetch, parse, run commands
- Add API tests: auth, logs, products, scraping_logs, webhooks

Tests: 417 passed, 85% coverage

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tests/api/test_auth_simple.py

@@ -0,0 +1,53 @@
+"""Tests simples pour l'authentification API."""
+
+import pytest
+from fastapi import HTTPException
+
+from pricewatch.app.api.main import require_token
+
+
+class FakeConfig:
+    api_token = "valid-token"
+
+
+class FakeConfigNoToken:
+    api_token = None
+
+
+def test_require_token_valid(monkeypatch):
+    """Token valide ne leve pas d'exception."""
+    monkeypatch.setattr("pricewatch.app.api.main.get_config", lambda: FakeConfig())
+    # Ne doit pas lever d'exception
+    require_token("Bearer valid-token")
+
+
+def test_require_token_missing(monkeypatch):
+    """Token manquant leve 401."""
+    monkeypatch.setattr("pricewatch.app.api.main.get_config", lambda: FakeConfig())
+    with pytest.raises(HTTPException) as exc_info:
+        require_token(None)
+    assert exc_info.value.status_code == 401
+
+
+def test_require_token_invalid_format(monkeypatch):
+    """Token sans Bearer leve 401."""
+    monkeypatch.setattr("pricewatch.app.api.main.get_config", lambda: FakeConfig())
+    with pytest.raises(HTTPException) as exc_info:
+        require_token("invalid-format")
+    assert exc_info.value.status_code == 401
+
+
+def test_require_token_wrong_value(monkeypatch):
+    """Mauvais token leve 403."""
+    monkeypatch.setattr("pricewatch.app.api.main.get_config", lambda: FakeConfig())
+    with pytest.raises(HTTPException) as exc_info:
+        require_token("Bearer wrong-token")
+    assert exc_info.value.status_code == 403
+
+
+def test_require_token_not_configured(monkeypatch):
+    """Token non configure leve 500."""
+    monkeypatch.setattr("pricewatch.app.api.main.get_config", lambda: FakeConfigNoToken())
+    with pytest.raises(HTTPException) as exc_info:
+        require_token("Bearer any-token")
+    assert exc_info.value.status_code == 500