chore(baseline): make prepush/weekly, scanner fix for git worktrees

Update the Test & Security Baseline from cj/security-baseline (364d756):
- make prepush runs only the checks the diff needs (scripts/security/changed_scope.py)
- make weekly = check + trivy-fs, run by the weekly cron on cj-ki
- in git worktrees gitleaks scanned 0 commits and Semgrep ignored .gitignore (.next/); fixed

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/security/changed_scope.py

@@ -0,0 +1,179 @@
+#!/usr/bin/env python3
+"""Leitet aus dem Git-Diff ab, welche Baseline-Prüfungen vor dem Push nötig sind.
+
+Aufruf (aus dem Repo-Root, so wie das Makefile es tut):
+  changed_scope.py targets [BASE]   make-Ziele für `make prepush`, eine Zeile
+  changed_scope.py files   [BASE]   geänderte, noch vorhandene Dateien (für `make sast-diff`)
+  changed_scope.py range   [BASE]   Commit-Bereich für gitleaks, leer = keine Basis gefunden
+  changed_scope.py explain [BASE]   Begründung für Menschen
+
+BASE ist die Git-Referenz, gegen die verglichen wird. Ohne BASE: Upstream des Branches, sonst
+origin/HEAD, origin/main, origin/master, main, master. Findet sich keine Basis, wird alles
+geprüft (sicherer Standard).
+
+Geprüft wird der Unterschied zwischen Basis und Arbeitsverzeichnis: die Commits seit der Basis
+plus noch nicht committete und neue Dateien.
+
+Einteilung (Reihenfolge zählt, erste passende Regel gewinnt):
+  Werkzeug    Makefile, baseline.mk, Semgrep-Regeln, Mutationen, pre-commit, CI  -> volles check
+  Abhängigk.  requirements*, pyproject, package*.json, Lockfiles               -> lint test audit
+  ohne Code   Doku, Bilder                                                     -> nur Secrets
+  Code        alles andere                                                     -> lint test sast-diff
+Zusätzlich: Pfad passt auf SECURITY_PATHS (Auth, Rollen, Routen, Schemas ...) -> + mutation.
+
+Anpassbar per Umgebung (in baseline.mk setzen, das Makefile exportiert sie):
+  SECURITY_PATHS, DOCS_PATHS, DEPS_PATHS, TOOLING_PATHS (reguläre Ausdrücke), MUTATIONS (Datei).
+"""
+
+import os
+import re
+import shutil
+import subprocess  # nosec B404 - nur feste git-Aufrufe ohne Shell
+import sys
+
+GIT = shutil.which("git") or "git"
+
+DEFAULT_TOOLING = (
+    r"(^|/)(Makefile|baseline\.mk|\.pre-commit-config\.yaml|\.gitleaks\.toml|"
+    r"[^/]*mutations[^/]*\.toml|\.semgrepignore)$|(^|/)\.semgrep/|(^|/)scripts/security/|"
+    r"(^|/)\.forgejo/|(^|/)\.github/workflows/"
+)
+DEFAULT_DEPS = (
+    r"(^|/)(requirements[^/]*\.(txt|in)|pyproject\.toml|poetry\.lock|uv\.lock|"
+    r"Pipfile(\.lock)?|package(-lock)?\.json|npm-shrinkwrap\.json|pnpm-lock\.yaml|yarn\.lock)$"
+)
+DEFAULT_DOCS = (
+    r"(\.(md|rst|adoc|txt|png|jpe?g|gif|webp|ico|pdf)$|^docs/|(^|/)LICENSE[^/]*$|"
+    r"(^|/)\.gitignore$|(^|/)\.gitattributes$)"
+)
+DEFAULT_SECURITY = (
+    r"(?i)(auth|login|logout|session|token|passw|secret|permission|role|rbac|acl|owner|"
+    r"tenant|route|router|middleware|schema|model|cors|csrf|security|config|settings|"
+    r"(^|/)(main|app|deps|dependencies)\.py$|(^|/)(server|app|index)\.[cm]?[jt]sx?$)"
+)
+
+
+def _git(*args):
+    cmd = [GIT, *args]
+    # Feste git-Aufrufe ohne Shell, Argumente nur aus diesem Skript bzw. Git-Referenzen.
+    # RUF100 im noqa: Apps ohne S-Regeln würden das noqa sonst als unnötig melden.
+    r = subprocess.run(cmd, capture_output=True, text=True, check=False)  # noqa: S603, RUF100  # nosec B603
+    return r.returncode, r.stdout.strip()
+
+
+def _rx(name, default):
+    return re.compile(os.environ.get(name) or default)
+
+
+def find_base(arg):
+    """Gibt den Merge-Base-Commit zurück oder None."""
+    candidates = [arg] if arg else []
+    if not arg:
+        rc, up = _git("rev-parse", "--abbrev-ref", "--symbolic-full-name", "@{u}")
+        if rc == 0 and up:
+            candidates.append(up)
+        candidates += ["origin/HEAD", "origin/main", "origin/master", "main", "master"]
+    for ref in candidates:
+        rc, _ = _git("rev-parse", "--verify", "-q", ref + "^{commit}")
+        if rc != 0:
+            continue
+        rc, mb = _git("merge-base", ref, "HEAD")
+        if rc == 0 and mb:
+            return mb
+    return None
+
+
+def changed_files(base):
+    files = set()
+    for args in (
+        ("diff", "--name-only", "--no-renames", base, "HEAD"),
+        ("diff", "--name-only", "--no-renames", "HEAD"),
+        ("ls-files", "--others", "--exclude-standard"),
+    ):
+        rc, out = _git(*args)
+        if rc == 0 and out:
+            files.update(line for line in out.splitlines() if line)
+    return sorted(files)
+
+
+def classify(files):
+    tooling = _rx("TOOLING_PATHS", DEFAULT_TOOLING)
+    deps = _rx("DEPS_PATHS", DEFAULT_DEPS)
+    docs = _rx("DOCS_PATHS", DEFAULT_DOCS)
+    sec = _rx("SECURITY_PATHS", DEFAULT_SECURITY)
+    groups = {"tooling": [], "deps": [], "docs": [], "code": [], "security": []}
+    for f in files:
+        if tooling.search(f):
+            groups["tooling"].append(f)
+        elif deps.search(f):
+            groups["deps"].append(f)
+        elif docs.search(f):
+            groups["docs"].append(f)
+        else:
+            groups["code"].append(f)
+            if sec.search(f):
+                groups["security"].append(f)
+    return groups
+
+
+def targets(base, groups):
+    mutations = os.environ.get("MUTATIONS") or "security-mutations.toml"
+    has_mut = os.path.isfile(mutations)
+    if base is None or groups["tooling"]:
+        first = "secrets" if base is None else "secrets-diff"
+        t = [first, "lint", "test", "sast", "audit"]
+        return t + (["mutation"] if has_mut else [])
+    t = ["secrets-diff"]
+    if groups["code"] or groups["deps"]:
+        t += ["lint", "test"]
+    if groups["code"]:
+        t.append("sast-diff")
+    if groups["deps"]:
+        t.append("audit")
+    if groups["security"] and has_mut:
+        t.append("mutation")
+    return t
+
+
+def explain(base, files, groups, t):
+    if base is None:
+        return "prepush: keine Basis (Upstream/main) gefunden -> volles Programm"
+    short = _git("rev-parse", "--short", base)[1]
+    lines = [f"prepush: Basis {short}, {len(files)} geänderte Datei(en)"]
+    labels = {
+        "tooling": "Baseline-Werkzeug (-> volles check)",
+        "deps": "Abhängigkeiten (-> audit)",
+        "security": "sicherheitsrelevant (-> mutation)",
+        "code": "Code (-> lint, test, sast-diff)",
+        "docs": "ohne Code (-> nur Secrets)",
+    }
+    for key, label in labels.items():
+        if groups[key]:
+            more = " ..." if len(groups[key]) > 4 else ""
+            sample = ", ".join(groups[key][:4]) + more
+            lines.append(f"  {label}: {sample}")
+    lines.append("  Ziele: " + " ".join(t))
+    return "\n".join(lines)
+
+
+def main(argv):
+    if len(argv) < 2 or argv[1] not in {"targets", "files", "range", "explain"}:
+        print(__doc__, file=sys.stderr)
+        return 2
+    mode, arg = argv[1], (argv[2] if len(argv) > 2 else "")
+    base = find_base(arg)
+    if mode == "range":
+        print(f"{base}..HEAD" if base else "")
+        return 0
+    files = changed_files(base) if base else []
+    if mode == "files":
+        print("\n".join(f for f in files if os.path.isfile(f)))
+        return 0
+    groups = classify(files)
+    t = targets(base, groups)
+    print(" ".join(t) if mode == "targets" else explain(base, files, groups, t))
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv))