Dockerfile

@@ -7,6 +7,15 @@ RUN cd client && npm install
 COPY client/ ./client/
 RUN cd client && npm run build
 
+# ── Version metadata ──────────────────────────────────────────────────────────
+# Pass these at build time:
+#   docker build --build-arg GIT_SHA=$(git rev-parse HEAD) \
+#                --build-arg BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ) .
+ARG GIT_SHA=dev
+ARG BUILD_TIME=unknown
+RUN echo "{\"sha\":\"${GIT_SHA}\",\"shortSha\":\"${GIT_SHA:0:7}\",\"buildTime\":\"${BUILD_TIME}\"}" \
+    > /build/client/dist/version.json
+
 FROM node:20-alpine AS production
 RUN apk add --no-cache chromium nss freetype harfbuzz ca-certificates ttf-freefont
 ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
@@ -25,5 +34,6 @@ COPY demo/        ./demo/
 COPY client/public/static ./client/dist/static
 RUN mkdir -p /data
 EXPOSE 3001
-HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3   CMD wget -qO- http://localhost:3001/api/health || exit 1
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+  CMD wget -qO- http://localhost:3001/api/health || exit 1
 CMD ["node", "server.js"]

client/public/version.json

@@ -0,0 +1,5 @@
+{
+  "sha": "dev",
+  "shortSha": "dev",
+  "buildTime": null
+}

client/src/App.jsx

@@ -42,8 +42,13 @@ function GiteaIcon() {
   );
 }
 
-function AppFooter() {
+function AppFooter({ version }) {
   const year = new Date().getFullYear();
+  const sha  = version?.shortSha || null;
+  const built = version?.buildTime
+    ? new Date(version.buildTime).toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' })
+    : null;
+
   return (
     <>
       <style>{`
@@ -53,13 +58,27 @@ function AppFooter() {
         }
       `}</style>
       <footer style={sf.footer}>
-        <span style={sf.copy}>© {year} Jason Stedwell</span>
-        <span style={sf.sep}>·</span>
+        <span style={sf.copy}>&copy; {year} Jason Stedwell</span>
+        <span style={sf.sep}>&middot;</span>
         <DevTicker />
-        <span style={sf.sep}>·</span>
+        <span style={sf.sep}>&middot;</span>
         <a href={REPO_URL} target="_blank" rel="noopener noreferrer" style={sf.link}>
           <GiteaIcon /> cpas
         </a>
+        {sha && sha !== 'dev' && (
+          <>
+            <span style={sf.sep}>&middot;</span>
+            <a
+              href={`${REPO_URL}/commit/${version.sha}`}
+              target="_blank"
+              rel="noopener noreferrer"
+              style={sf.link}
+              title={built ? `Built ${built}` : 'View commit'}
+            >
+              {sha}
+            </a>
+          </>
+        )}
       </footer>
     </>
   );
@@ -129,6 +148,14 @@ const sf = {
 export default function App() {
   const [tab,        setTab]        = useState('dashboard');
   const [showReadme, setShowReadme] = useState(false);
+  const [version,    setVersion]    = useState(null);
+
+  useEffect(() => {
+    fetch('/version.json')
+      .then(r => r.ok ? r.json() : null)
+      .then(v => { if (v) setVersion(v); })
+      .catch(() => {});
+  }, []);
 
   return (
     <ToastProvider>
@@ -156,7 +183,7 @@ export default function App() {
           </div>
         </div>
 
-        <AppFooter />
+        <AppFooter version={version} />
 
         {showReadme && <ReadmeModal onClose={() => setShowReadme(false)} />}
       </div>

server.js

@@ -29,8 +29,19 @@ function audit(action, entityType, entityId, performedBy, details) {
   }
 }
 
+// ── Version info (written by Dockerfile at build time) ───────────────────────
+// Falls back to { sha: 'dev' } when running outside a Docker build (local dev).
+let BUILD_VERSION = { sha: 'dev', shortSha: 'dev', buildTime: null };
+try {
+  BUILD_VERSION = require('./client/dist/version.json');
+} catch (_) { /* pre-build or local dev — stub values are fine */ }
+
 // Health
-app.get('/api/health', (req, res) => res.json({ status: 'ok', timestamp: new Date().toISOString() }));
+app.get('/api/health', (req, res) => res.json({
+  status:    'ok',
+  timestamp: new Date().toISOString(),
+  version:   BUILD_VERSION,
+}));
 
 // ── Employees ────────────────────────────────────────────────────────────────
 app.get('/api/employees', (req, res) => {