ci: add CodeQL security scanning and Dependabot

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/services/scholar/parser_utils.py

@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+from html import unescape
+
+from app.services.domains.scholar.parser_constants import TAG_RE
+
+
+def normalize_space(value: str) -> str:
+    return " ".join(unescape(value).split())
+
+
+def strip_tags(value: str) -> str:
+    return normalize_space(TAG_RE.sub(" ", value))
+
+
+def attr_class(attrs: list[tuple[str, str | None]]) -> str:
+    for name, raw_value in attrs:
+        if name.lower() == "class":
+            return raw_value or ""
+    return ""
+
+
+def attr_href(attrs: list[tuple[str, str | None]]) -> str | None:
+    for name, raw_value in attrs:
+        if name.lower() == "href":
+            return raw_value
+    return None
+
+
+def attr_src(attrs: list[tuple[str, str | None]]) -> str | None:
+    for name, raw_value in attrs:
+        if name.lower() == "src":
+            return raw_value
+    return None
+
+
+def build_absolute_scholar_url(path_or_url: str | None) -> str | None:
+    if not path_or_url:
+        return None
+    from urllib.parse import urljoin
+
+    return urljoin("https://scholar.google.com", path_or_url)