Add secret scanning, Dockerfile lint, ruff lint/format gate, coverage gate, and automatic CVE remediation PRs

- gitleaks (via docker cp, dockerignore-agnostic) and hadolint scan every push/PR
- new ruff lint stage (ruff.toml pins known-first-party for host/container
  consistency; F841/B007 in webui.py left un-fixed via per-file-ignores —
  app-logic changes, flagged for review rather than auto-fixed)
- pytest --cov-fail-under=90 gate on the test stage (already had pytest-cov,
  never wired into CI until now)
- scheduled Trivy critical failures now attempt an apk upgrade rebuild and open a PR
  if it clears the finding, instead of just failing red
- ruff --fix/--format applied to existing code to start the gate clean

tests/conftest.py

@@ -50,9 +50,7 @@ def app_env(tmp_path, monkeypatch, make_image):
     theme_dir = root / "config" / "themes" / "modern"
     theme_dir.mkdir(parents=True)
     (theme_dir / "theme.yaml").write_text(
-        "colors:\n  browser_color: '#ffffff'\n"
-        "favicon:\n  path: favicon.png\n"
-        "google_fonts: []\n",
+        "colors:\n  browser_color: '#ffffff'\nfavicon:\n  path: favicon.png\ngoogle_fonts: []\n",
         encoding="utf-8",
     )
     make_image(theme_dir / "favicon.png", size=(32, 32), fmt="PNG")
@@ -61,8 +59,7 @@ def app_env(tmp_path, monkeypatch, make_image):
         "hero:\n  images: []\ngallery:\n  images: []\n", encoding="utf-8"
     )
     (root / "config" / "site.yaml").write_text(
-        "info:\n  title: Test\n  canonical: https://example.com\n"
-        "social:\n  thumbnail: ''\n",
+        "info:\n  title: Test\n  canonical: https://example.com\nsocial:\n  thumbnail: ''\n",
         encoding="utf-8",
     )
 

tests/test_builder_utils.py

@@ -1,5 +1,3 @@
-from pathlib import Path
-
 from src.py.builder import utils
 
 
@@ -30,7 +28,7 @@ def test_load_theme_config_missing_raises(tmp_path):
     themes_dir = tmp_path / "themes"
     try:
         utils.load_theme_config("missing", themes_dir)
-        assert False, "expected FileNotFoundError"
+        raise AssertionError("expected FileNotFoundError")
     except FileNotFoundError:
         pass
 

tests/test_gallery_builder.py

@@ -1,5 +1,3 @@
-import yaml
-
 from src.py.builder import gallery_builder as gb
 
 

tests/test_image_processor.py

@@ -1,5 +1,3 @@
-from pathlib import Path
-
 from PIL import Image
 
 from src.py.builder import image_processor as ip
@@ -101,8 +99,13 @@ def test_generate_favicons_from_logo_creates_all_sizes(tmp_path, make_image):
     ip.generate_favicons_from_logo({"favicon": {"path": "favicon.png"}}, theme_dir, output_dir)
 
     expected = [
-        "favicon-32.png", "favicon-96.png", "favicon-128.png",
-        "favicon-192.png", "favicon-196.png", "favicon-152.png", "favicon-180.png",
+        "favicon-32.png",
+        "favicon-96.png",
+        "favicon-128.png",
+        "favicon-192.png",
+        "favicon-196.png",
+        "favicon-152.png",
+        "favicon-180.png",
     ]
     for name in expected:
         assert (output_dir / name).exists()

tests/test_webui_routes.py

@@ -102,7 +102,13 @@ def test_site_info_get_and_post(client, app_env):
     data = resp.get_json()
     assert data["info"]["title"] == "Test"
 
-    client.post("/api/site-info", json={"info": {"subtitle": "New subtitle"}, "social": {"instagram_url": "https://insta.example"}})
+    client.post(
+        "/api/site-info",
+        json={
+            "info": {"subtitle": "New subtitle"},
+            "social": {"instagram_url": "https://insta.example"},
+        },
+    )
 
     updated = client.get("/api/site-info").get_json()
     assert updated["info"]["title"] == "Test"
@@ -271,9 +277,7 @@ def test_trigger_build_success_invokes_subprocess(client, app_env, monkeypatch):
     )
 
     calls = []
-    monkeypatch.setattr(
-        webui.subprocess, "run", lambda *a, **k: calls.append((a, k))
-    )
+    monkeypatch.setattr(webui.subprocess, "run", lambda *a, **k: calls.append((a, k)))
 
     resp = client.post("/api/build")
     assert resp.get_json() == {"status": "ok"}