feat(controls): B1 — custom semgrep detectors for 4 CRA controls

Covers the pattern-expressible slice of the needs_tooling bucket that no
off-the-shelf ruleset digs out, keeping detection deterministic (LLM only
FP-filters downstream, never detects):

- cra-ai-1  Secure-by-Default: flask/django debug, TLS verify=False, CORS '*'
- cra-ai-7  Strong auth: password/secret hashed with md5/sha1 (metavar-gated)
- cra-ai-10 Session mgmt: Secure/HttpOnly = false cookies (py + express)
- cra-ai-14 Data at rest: ECB/DES/3DES + node createCipher

Rules ship in the binary (include_str!) and stage to a temp file at scan time,
added as a second --config alongside --config=auto (no deploy/volume change).

Wiring: control-map gains controls_for_finding (match by CWE and/or rule id);
custom controls bind by rule id with cwe:[] so a broad CWE can't over-attribute
and let the judge FP-drop a genuine finding. rule_id_matches tolerates semgrep's
path prefix on local check_ids. Triage now maps by rule id too (a custom finding
carries no LUT CWE). LUT: cra-ai-1,7,10,14 needs_tooling->covered (covered 9->13).

Validated: all 9 rules fire on positive fixtures, 0 on clean. ControlCheckSpec
gains Serialize/Deserialize (unrelated-safe; already used by the index cache).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

control-map/data/cra_control_map.json

@@ -5,9 +5,21 @@
     {
       "control": "cra-ai-1",
       "title": "Secure-by-Default-Konfiguration",
-      "scans": [],
-      "note": "code-checkable but no off-the-shelf tool digs it out — author a detector (custom semgrep rule / check)",
-      "status": "needs_tooling"
+      "scans": [
+        {
+          "tool": "semgrep",
+          "scan_type": "sast",
+          "cwe": [],
+          "rules": [
+            "cra-ai-1-flask-debug-enabled",
+            "cra-ai-1-django-debug-true",
+            "cra-ai-1-tls-verify-disabled",
+            "cra-ai-1-cors-wildcard"
+          ]
+        }
+      ],
+      "note": null,
+      "status": "covered"
     },
     {
       "control": "cra-ai-2",
@@ -47,9 +59,18 @@
     {
       "control": "cra-ai-7",
       "title": "Starke Authentifizierung",
-      "scans": [],
-      "note": "code-checkable but no off-the-shelf tool digs it out — author a detector (custom semgrep rule / check)",
-      "status": "needs_tooling"
+      "scans": [
+        {
+          "tool": "semgrep",
+          "scan_type": "sast",
+          "cwe": [],
+          "rules": [
+            "cra-ai-7-weak-password-hash"
+          ]
+        }
+      ],
+      "note": null,
+      "status": "covered"
     },
     {
       "control": "cra-ai-8",
@@ -100,9 +121,19 @@
     {
       "control": "cra-ai-10",
       "title": "Sitzungsmanagement",
-      "scans": [],
-      "note": "code-checkable but no off-the-shelf tool digs it out — author a detector (custom semgrep rule / check)",
-      "status": "needs_tooling"
+      "scans": [
+        {
+          "tool": "semgrep",
+          "scan_type": "sast",
+          "cwe": [],
+          "rules": [
+            "cra-ai-10-session-cookie-insecure",
+            "cra-ai-10-express-cookie-insecure"
+          ]
+        }
+      ],
+      "note": null,
+      "status": "covered"
     },
     {
       "control": "cra-ai-11",
@@ -138,9 +169,19 @@
     {
       "control": "cra-ai-14",
       "title": "Speicher-Schutz (Data at Rest)",
-      "scans": [],
-      "note": "code-checkable but no off-the-shelf tool digs it out — author a detector (custom semgrep rule / check)",
-      "status": "needs_tooling"
+      "scans": [
+        {
+          "tool": "semgrep",
+          "scan_type": "sast",
+          "cwe": [],
+          "rules": [
+            "cra-ai-14-python-weak-cipher",
+            "cra-ai-14-node-weak-cipher"
+          ]
+        }
+      ],
+      "note": null,
+      "status": "covered"
     },
     {
       "control": "cra-ai-15",