fix: аудит — 19 фиксов безопасности, надёжности, UI и 16 новых тестов

- S4: bump jinja2>=3.1.4, python-multipart>=0.0.18, httpx>=0.28.0
- S5: _detect_ecosystem — DEFAULT_ECOSYSTEM для неизвестных форматов
- S6: harvester — log.exception() вместо log.error()
- S8: _scan_component — urlencode параметров
- P1: scanner — proc.kill() при таймауте
- P3: api_packages — selectinload(Scan.findings), убран N+1
- P4+P5: утечка _url_locks и _llm_locks при early return
- P6: DB reaper — сброс {'status':'analyzing'} при старте
- UI: htmx-пагинация, фильтры не теряют flagged, 404 с layout
- UI: мобильные таблицы overflow-x, полная стата на дашборде
- UI: i18n статусов в _status_badge, urlencode package_name
- 16 новых тестов: analyze endpoint (6), scanner errors (4),
  webhook signature (2), llm client (4)

tests/test_nexus.py

@@ -1,6 +1,5 @@
 """Tests for Nexus package info extractors."""
 
-
 from guarddog_nexus.core.nexus import (
     extract_go_info,
     extract_npm_info,
@@ -37,9 +36,10 @@ class TestGoExtractor:
         )
 
     def test_long_module(self):
-        assert extract_go_info(
-            "/packages/github.com/gin-gonic/gin/@v/v1.9.0.zip"
-        ) == ("github.com/gin-gonic/gin", "v1.9.0")
+        assert extract_go_info("/packages/github.com/gin-gonic/gin/@v/v1.9.0.zip") == (
+            "github.com/gin-gonic/gin",
+            "v1.9.0",
+        )
 
     def test_no_at_v(self):
         assert extract_go_info("packages/some/pkg/v1.0.0.zip") is None
@@ -68,21 +68,22 @@ class TestNpmExtractor:
 
 class TestDispatchExtractor:
     def test_pypi(self):
-        assert extract_package_info(
-            "/packages/requests/2.31.0/requests-2.31.0.tar.gz", "pypi"
-        ) == ("requests", "2.31.0")
+        assert extract_package_info("/packages/requests/2.31.0/requests-2.31.0.tar.gz", "pypi") == (
+            "requests",
+            "2.31.0",
+        )
 
     def test_go(self):
-        assert extract_package_info(
-            "github.com/gorilla/mux/@v/v1.8.0.zip", "go"
-        ) == ("github.com/gorilla/mux", "v1.8.0")
+        assert extract_package_info("github.com/gorilla/mux/@v/v1.8.0.zip", "go") == (
+            "github.com/gorilla/mux",
+            "v1.8.0",
+        )
 
     def test_npm(self):
-        assert extract_package_info(
-            "packages/lodash/-/lodash-4.17.21.tgz", "npm"
-        ) == ("lodash", "4.17.21")
+        assert extract_package_info("packages/lodash/-/lodash-4.17.21.tgz", "npm") == (
+            "lodash",
+            "4.17.21",
+        )
 
     def test_unknown_ecosystem(self):
-        assert extract_package_info(
-            "/packages/pkg/1.0/file.tar.gz", "unknown"
-        ) == ("pkg", "1.0")
+        assert extract_package_info("/packages/pkg/1.0/file.tar.gz", "unknown") == ("pkg", "1.0")