chore(ai): centralize guardrail scripts under .ai; add resolve_repo_root; add shims for .junie/.nolik; fix gitea contexts in release.yml

Co-authored-by: Junie <junie@jetbrains.com>

.ai/scripts/check-docs-drift.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd -- "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+# shellcheck disable=SC1091
+source "$SCRIPT_DIR/lib/common.sh"
+
+REPO_ROOT="$(resolve_repo_root)"
+cd "$REPO_ROOT"
+
+# check-docs-drift.sh
+# Zweck: sehr schlanke Drift-Checks gegen die neue Doku-Struktur.
+# - Kein Guidelines-System mehr.
+# - Single Source of Truth: `docs/`
+
+err=0
+
+has() { grep -q "$2" "$1" || { echo "[DRIFT] '$2' fehlt in $1"; err=1; }; }
+miss() { grep -q "$2" "$1" && { echo "[DRIFT] Veralteter Begriff '$2' in $1"; err=1; }; }
+
+# Harte Altlast-Pfade dürfen nicht mehr vorkommen
+if git grep -n "docs/00_Domain/" -- docs >/dev/null 2>&1; then
+  echo "[DRIFT] Veralteter Pfad 'docs/00_Domain/' in docs/* gefunden"
+  err=1
+fi
+if git grep -n "docs/adr/" -- docs >/dev/null 2>&1; then
+  echo "[DRIFT] Veralteter Pfad 'docs/adr/' in docs/* gefunden"
+  err=1
+fi
+if git grep -n "docs/c4/" -- docs >/dev/null 2>&1; then
+  echo "[DRIFT] Veralteter Pfad 'docs/c4/' in docs/* gefunden"
+  err=1
+fi
+if git grep -n "docs/how-to/" -- docs >/dev/null 2>&1; then
+  echo "[DRIFT] Veralteter Pfad 'docs/how-to/' in docs/* gefunden"
+  err=1
+fi
+if git grep -n "docs/reference/" -- docs >/dev/null 2>&1; then
+  echo "[DRIFT] Veralteter Pfad 'docs/reference/' in docs/* gefunden"
+  err=1
+fi
+
+# Quelle der Wahrheit: Gateway-Technologie (sollte in Architektur/ADRs/C4 konsistent sein)
+has docs/01_Architecture/ARCHITECTURE.md "Spring Cloud Gateway"
+has docs/01_Architecture/adr/0007-api-gateway-pattern-de.md "Spring Cloud Gateway"
+miss docs/01_Architecture/adr/0007-api-gateway-pattern-de.md "Ktor"
+has docs/01_Architecture/c4/02-container-de.puml "Spring Cloud Gateway"
+miss docs/01_Architecture/c4/02-container-de.puml "Ktor"
+
+exit $err