chore(spec): 归档 blog-5n——八任务收敛（后台深度优化全家桶）

Spec: 2026-11-05_blog-5n-admin-deep-optimization

Co-authored-by: GLM-5.3

.spec/specs/archive/2026-11-05_blog-5n-admin-deep-optimization/evidence/verify_t6.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -euo pipefail
+cd "$(git rev-parse --show-toplevel)"
+export PATH="$HOME/.local/node/bin:$PATH"
+pnpm astro build >/dev/null 2>&1
+python3 scripts/build-perf/gen-admin-stats.py dist
+[ -f dist/admin/stats.html ]
+python3 -c "import json;d=json.load(open('dist/admin/stats.json'));assert d['posts_visible']>0 and 'top_tags' in d"
+echo "verify_t6 OK"