feat(mcp): gate abonnement + écrans de consentement OAuth (#114)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/mcp/test_oauth_consent.py

@@ -0,0 +1,29 @@
+from src.mcp.oauth import consent
+
+
+def test_subscription_ok_tous_abonnes(monkeypatch):
+    monkeypatch.setattr("src.mcp.oauth.consent.TOUS_ABONNES", True)
+    assert consent.subscription_ok(999) is True
+
+
+def test_subscription_ok_delegates(monkeypatch):
+    monkeypatch.setattr("src.mcp.oauth.consent.TOUS_ABONNES", False)
+    monkeypatch.setattr(
+        "src.mcp.oauth.consent.has_active_subscription", lambda uid: uid == 7
+    )
+    assert consent.subscription_ok(7) is True
+    assert consent.subscription_ok(8) is False
+
+
+def test_render_consent_shows_redirect_host():
+    html = consent.render_consent(
+        "Claude", "https://claude.ai/api/mcp/auth_callback", "mcp"
+    )
+    assert "claude.ai" in html
+    assert "Claude" in html
+    assert 'name="confirm"' in html
+
+
+def test_render_subscription_required_links_abonnement():
+    html = consent.render_subscription_required()
+    assert "/compte/abonnement" in html