fix(docs): update nginx-hardening.conf to nexus domain and log paths

Server block comment, access_log and error_log paths all updated from
capakraken.hartmut-noerenberg.com to nexus.hartmut-noerenberg.com.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docs/nginx-hardening.conf

@@ -1,5 +1,5 @@
-# CapaKraken nginx Security Hardening
+# Nexus nginx Security Hardening
-# Apply to the server block for capakraken.hartmut-noerenberg.com
+# Apply to the server block for nexus.hartmut-noerenberg.com
 #
 # References:
 #   - EAPPS 3.3.1.3.04 (Server Header entfernen)
@@ -113,5 +113,5 @@ log_format security '$remote_addr - $remote_user [$time_local] '
                     '"$http_referer" "$http_user_agent" '
                     '$request_time $upstream_response_time';
 
-access_log /var/log/nginx/capakraken_access.log security;
+access_log /var/log/nginx/nexus_access.log security;
-error_log /var/log/nginx/capakraken_error.log warn;
+error_log /var/log/nginx/nexus_error.log warn;

tooling/migrate/rename-to-nexus.sh

@@ -63,7 +63,7 @@ docker compose -p "$OLD_PROJECT" -f "$COMPOSE_FILE" stop app 2>/dev/null || true
 echo "[2/7] Capturing pre-rename row counts..."
 PRE_COUNTS=$(docker compose -p "$OLD_PROJECT" -f "$COMPOSE_FILE" exec -T postgres \
   psql -U capakraken -d capakraken -t -c \
-  "SELECT table_name, n_live_tup FROM pg_stat_user_tables ORDER BY table_name;")
+  "SELECT relname, n_live_tup FROM pg_stat_user_tables ORDER BY relname;")
 echo "$PRE_COUNTS" | head -20
 echo "..."
 
@@ -149,7 +149,7 @@ sleep 15
 echo "=== Verification ==="
 POST_COUNTS=$(docker compose -p "$NEW_PROJECT" -f "$COMPOSE_FILE" exec -T postgres \
   psql -U nexus -d nexus -t -c \
-  "SELECT table_name, n_live_tup FROM pg_stat_user_tables ORDER BY table_name;")
+  "SELECT relname, n_live_tup FROM pg_stat_user_tables ORDER BY relname;")
 echo "Post-rename row counts (sample):"
 echo "$POST_COUNTS" | head -20