v0.31.3: admin Users "Last seen" = Never for unclaimed invites

An admin-created invite row showed a Last-seen timestamp identical to
Signed-up, implying the invitee had visited. users.last_seen_at is
NOT NULL DEFAULT (datetime('now')) and the invite INSERT sets neither
timestamp, so both default to row-creation time; last_seen_at only
advances on real authentication. An unclaimed invite has provably never
authenticated (the unclaimed state drives the PENDING INVITE badge), so
the Users tab now renders "Never" for the Last-seen cell of a pending
row. Signed-up (invite-created date) unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -23,6 +23,44 @@ skip versions are the composition of each intervening adjacent
 release's steps in order — no A-to-B path is pre-computed beyond
 that.
 
+## 0.31.3 — 2026-05-30
+
+**Patch — admin Users tab: "Last seen" reads "Never" for unclaimed
+invites. Visual/logic only in `Admin.jsx`. A plain frontend rebuild
+applies it.**
+
+An admin-created invite row showed a real-looking "Last seen" timestamp
+identical to "Signed up," implying the invitee had visited when they
+hadn't. Cause: `users.last_seen_at` is `NOT NULL DEFAULT (datetime('now'))`
+(`migrations/001_users_and_audit.sql`) and the invite INSERT
+(`invites.py`) sets neither timestamp, so both default to the
+row-creation instant; `last_seen_at` only advances on a real
+authentication. Since an unclaimed invite has provably never
+authenticated (that unclaimed state is exactly what drives the
+"PENDING INVITE" badge), the Users tab now renders **"Never"** for the
+Last-seen cell of a pending-invite row instead of the misleading
+default. Signed-up (the invite-created date) is unchanged.
+
+Upgrade steps: none. **SHOULD** deploy as a normal code deploy.
+
+## 0.31.2 — 2026-05-29
+
+**Patch — landing (`/`) welcome panel spacing. Visual only: CSS in
+`App.css` (`.welcome`). A plain frontend rebuild applies it.**
+
+The welcome read-view was jammed against the catalog divider with no
+top offset and loose, uneven paragraph spacing. Root cause: `.main-pane`
+carries a bare `.main-pane { padding: 0; display: flex }` override (the
+§8 three-column RFC shell) that shadows the earlier padded read-view
+rule, so the pane provides no padding — and `.welcome` (just
+`max-width`) never compensated. The welcome surface now owns its own
+breathing room: 56px top / 48px side gutters, a capped 680px measure,
+a stronger `text-3xl` "Welcome." hero, and even `--space-8` paragraph
+rhythm at `--leading-relaxed`. Applies to both the signed-out and
+signed-in welcome (same `.welcome` class).
+
+Upgrade steps: none. **SHOULD** deploy as a normal code deploy.
+
 ## 0.31.1 — 2026-05-29
 
 **Patch — admin Users tab + header UX polish. Visual only: CSS plus

VERSION

@@ -1 +1 @@
-0.31.1
+0.31.3

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "rfc-app-frontend",
   "private": true,
-  "version": "0.31.1",
+  "version": "0.31.3",
   "type": "module",
   "scripts": {
     "dev": "vite",

frontend/src/App.css

@@ -189,9 +189,27 @@
   padding: 32px 48px;
 }
 
-.welcome { max-width: 640px; }
-.welcome h1 { font-size: var(--text-2xl); font-weight: 600; margin: 0 0 16px; }
-.welcome p { line-height: 1.7; color: var(--c-gray-600); }
+/* `.main-pane` is the §8 flex shell and carries no padding (the bare
+   `.main-pane` override below shadows the padded read-view rule), so the
+   welcome surface owns its own breathing room — top offset, comfortable
+   side gutters, and a capped measure for readable line length. */
+.welcome {
+  max-width: 680px;
+  padding: 56px 48px 64px;
+}
+.welcome h1 {
+  font-size: var(--text-3xl); font-weight: 600;
+  letter-spacing: -0.01em;
+  margin: 0 0 var(--space-8);
+}
+.welcome p {
+  font-size: var(--text-lg);
+  line-height: var(--leading-relaxed);
+  color: var(--c-gray-600);
+  margin: 0 0 var(--space-8);
+}
+.welcome p:last-child { margin-bottom: 0; }
+.welcome strong { color: var(--c-gray-800); }
 
 /* --- RFC / Proposal view (read-only for slice 1) --- */
 

frontend/src/components/Admin.jsx

@@ -326,7 +326,14 @@ function UserRow({ user: u, busy, onChangeRole, onToggleMute, onFlipPermission }
           )}
         </td>
         <TimeCell value={u.created_at} />
-        <TimeCell value={u.last_seen_at} />
+        {/* An unclaimed admin invite has provably never authenticated, so
+            last_seen_at is just the row-creation default (it equals
+            created_at). Render the truth — "Never" — rather than a
+            timestamp that reads like a real visit. */}
+        <TimeCell
+          value={pendingInvite ? null : u.last_seen_at}
+          emptyLabel={pendingInvite ? 'Never' : '—'}
+        />
       </tr>
       {state === 'pending' && u.beta_request_reason ? (
         <tr className="user-row-reason">
@@ -345,8 +352,8 @@ function UserRow({ user: u, busy, onChangeRole, onToggleMute, onFlipPermission }
 // Render a "YYYY-MM-DD HH:MM:SS" timestamp as an intentional date-over-time
 // stack (date prominent, time quiet below) rather than letting a narrow
 // column wrap the value mid-string. Falls back to an em-dash when absent.
-function TimeCell({ value }) {
-  if (!value) return <td className="muted">—</td>
+function TimeCell({ value, emptyLabel = '—' }) {
+  if (!value) return <td className="muted">{emptyLabel}</td>
   const [date, ...rest] = String(value).split(' ')
   const time = rest.join(' ')
   return (