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/cli/test_doctor.py

@@ -0,0 +1,36 @@
+"""Tests pour la commande CLI doctor."""
+
+import pytest
+from typer.testing import CliRunner
+
+from pricewatch.app.cli.main import app
+
+runner = CliRunner()
+
+
+class TestDoctorCommand:
+    """Tests pour la commande doctor."""
+
+    def test_doctor_success(self):
+        """Doctor doit afficher le statut de l'installation."""
+        result = runner.invoke(app, ["doctor"])
+        assert result.exit_code == 0
+        assert "PriceWatch Doctor" in result.stdout
+        assert "Python" in result.stdout
+        # "prêt" avec accent
+        assert "prêt" in result.stdout.lower() or "ready" in result.stdout.lower()
+
+    def test_doctor_shows_dependencies(self):
+        """Doctor doit lister les dependances."""
+        result = runner.invoke(app, ["doctor"])
+        assert result.exit_code == 0
+        assert "typer" in result.stdout.lower()
+        assert "pydantic" in result.stdout.lower()
+        assert "playwright" in result.stdout.lower()
+
+    def test_doctor_shows_stores(self):
+        """Doctor doit lister les stores disponibles."""
+        result = runner.invoke(app, ["doctor"])
+        assert result.exit_code == 0
+        assert "amazon" in result.stdout.lower()
+        assert "cdiscount" in result.stdout.lower()