App versioning + the create page's missing top padding

Versioning: package.json carries the app version (0.1.2 here; one bump per
task with `npm run version:bump`, patch 0-9 rolling into the minor at 10),
baked into the build via lib/version.ts, reported by /api/healthz and shown
in Settings next to the running commit. AGENTS.md documents the rule; the
native suite checks both the API and the Settings row.

Fix: on desktop the app header is hidden, so every page owns its top padding —
/create was the only one without `lg:pt-10`, which slammed the Study deck /
Make my homework switch against the top of the window while /homework had a
comfortable gap. Both now sit at 40px; the wizard suite asserts the clearance
and that the two pages stay in step (90 checks).

SW -> freezmo-v50.

components/SettingsDialog.tsx

@@ -518,11 +518,13 @@ export function SettingsDialog({
                           {version ? (
                             <DetailRow
                               label={t("settings.version")}
-                              value={
-                                version.builtAt
-                                  ? `${version.short} · ${new Date(version.builtAt).toLocaleString()}`
-                                  : version.short
-                              }
+                              value={[
+                                version.version ? `v${version.version}` : "",
+                                version.short,
+                                version.builtAt ? new Date(version.builtAt).toLocaleString() : "",
+                              ]
+                                .filter(Boolean)
+                                .join(" · ")}
                               mono
                             />
                           ) : null}
@@ -797,7 +799,11 @@ export function SettingsDialog({
                 {health ? <HealthPanel health={health} /> : null}
                 {version ? (
                   <p className="mt-2 text-[11px] text-[var(--text-subtle)]">
-                    {t("settings.version")}: <span className="font-mono">{version.short}</span>
+                    {t("settings.version")}:{" "}
+                    <span className="font-mono">
+                      {version.version ? `v${version.version} · ` : ""}
+                      {version.short}
+                    </span>
                     {version.builtAt ? ` · ${new Date(version.builtAt).toLocaleString()}` : ""}
                   </p>
                 ) : null}