feat(admin): manage member account access

Allow administrators to freeze, unfreeze, and permanently delete member accounts with related content cleanup.

static/css/site.css

@@ -18,4 +18,5 @@ nav { display:flex; align-items:center; gap:22px; font-family:"DM Mono", monospa
 .code-block { margin:28px 0; border:1px solid var(--ink); background:var(--ink); }.code-block-head { display:flex; align-items:center; justify-content:space-between; min-height:38px; padding:7px 10px 7px 14px; color:var(--paper); font:11px "DM Mono", monospace; letter-spacing:.7px; text-transform:uppercase; }.copy-code { border:1px solid var(--paper); background:transparent; color:var(--paper); padding:5px 8px; font:11px "DM Mono", monospace; cursor:pointer; }.copy-code:hover { border-color:var(--acid); background:var(--acid); color:var(--ink); }.code-block pre { margin:0; padding:18px; overflow:auto; background:#fbfbf6; color:var(--ink); font:14px/1.55 "DM Mono", monospace; white-space:pre; }.code-block code { font:inherit; }
 .flash { margin:16px max(5vw, 24px) 0; padding:11px 14px; font:12px "DM Mono", monospace; border:1px solid var(--ink); }.flash.error { border-color:var(--orange); background:#ffe3d9; }.flash.success { background:var(--acid); }footer { border-top:1px solid var(--ink); padding:23px max(5vw, 24px); display:flex; justify-content:space-between; font:10px "DM Mono", monospace; color:var(--muted); }
 .mfa-qr { display:block; width:200px; max-width:100%; margin-top:28px; border:8px solid #fff; image-rendering:pixelated; }.mfa-manual { margin-top:18px; color:var(--muted); font:12px "DM Mono", monospace; }.mfa-manual summary { cursor:pointer; }.mfa-secret { display:block; width:max-content; max-width:100%; overflow-wrap:anywhere; margin-top:10px; padding:14px; border:1px solid var(--ink); background:var(--acid); color:var(--ink); font:14px "DM Mono", monospace; }.account-table { border:1px solid var(--ink); }.account-row { display:grid; grid-template-columns:2fr 1.5fr 1fr 1fr; gap:16px; align-items:center; min-height:64px; padding:12px 16px; border-bottom:1px solid var(--ink); font:13px "DM Mono", monospace; }.account-row:last-child { border-bottom:0; }.account-head { min-height:auto; padding:10px 16px; background:var(--ink); color:var(--paper); font-size:10px; }.account-row small { color:var(--orange); font:10px "DM Mono", monospace; }.account-row .email { display:block; margin-top:5px; color:var(--muted); overflow-wrap:anywhere; }
+.account-actions { display:flex; flex-wrap:wrap; align-items:center; gap:6px; }.account-actions form { margin:0; }.account-actions strong { color:var(--orange); font:10px "DM Mono", monospace; }.delete-account { border-color:var(--orange); background:#ffe3d9; color:var(--ink); }.delete-account:hover { background:var(--orange); }
 @media (max-width:720px) { .site-header { align-items:flex-start; }.site-header nav { justify-content:flex-end; flex-wrap:wrap; gap:10px 15px; }.hero { min-height:560px; }.scope { width:220px; height:220px; right:-45px; }.post-grid, .auth-layout, .two-col, .step-image-row { grid-template-columns:1fr; }.auth-layout { gap:40px; padding:60px 24px; }footer { flex-wrap:wrap; gap:8px 16px; }.user-chip { display:none; }.account-row { grid-template-columns:1fr 1fr; }.account-head { display:none; } }