feat(search): refresh global search UI and align qa/docs updates

.agents/checks/quality-gates.json

@@ -50,7 +50,7 @@
       "type": "fast",
       "name": "Docs link integrity",
       "command": "bin/docs-link-check.sh",
-      "note": "Default scanner excludes .agents/runs/** to avoid historical artifact false positives."
+      "note": "Default scanner excludes .agents/runs/** to avoid historical artifact false positives. qa-required also enforces bin/docs-drift-check.sh as QG-008 supplement."
     },
     {
       "id": "QG-009",

.agents/skills/core-guardrails/references/quality-gates.md

@@ -37,7 +37,10 @@ Erwartung: jeweils `0`.
 1. `bin/docs-link-check.sh`
    - prueft Doku-Links in `README.md`, `docs/**`, `.agents/skills/**` und `.agents/**`
    - `.agents/runs/**` ist standardmaessig ausgeschlossen (historische Artefakte)
-2. `bin/codex-skills-sync.sh --check`
+2. `bin/docs-drift-check.sh`
+   - prueft bekannte Legacy-Drifts (entfernte Config-Pfade/Constants, obsolete Search-Marker)
+   - prueft Setup-Vertrag fuer `config/config.php.example` in den Kern-Onboarding-Dokus
+3. `bin/codex-skills-sync.sh --check`
    - prueft Drift zwischen Repo-Skills und `~/.codex/skills`
 
 ## Berichtspflicht