Add school name and logo to home screen and admin header

- School name now appears on the student home screen and updates the page title
- Logo can be uploaded in Settings (PNG/JPG/GIF/WebP/SVG, max 2 MB); stored in the data volume so it persists across container restarts
- When a logo is uploaded the text school name is hidden in favour of the logo
- Admin header shows the school name instead of hardcoded "Homeschool", updates live when saved
- New server endpoints: GET /api/logo, POST /api/admin/upload-logo, DELETE /api/admin/logo
- /api/public-settings now includes school_name and has_logo

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/admin.html

@@ -22,7 +22,7 @@
 
   <div id="console" hidden>
     <header class="admin-header">
-      <a href="index.html" class="admin-logo">🎓 Homeschool</a>
+      <a href="index.html" class="admin-logo" id="admin-school-name">🎓 Homeschool</a>
       <nav class="admin-nav">
         <button class="nav-pill active" data-panel="kids">🧒 Kids</button>
         <button class="nav-pill" data-panel="courses">📚 Courses</button>
@@ -516,10 +516,26 @@
         <h2>School</h2>
         <form id="app-settings-form">
           <div class="field-group">
-            <label for="setting-school-name">School / family name <span class="hint">(appears on printed reports)</span></label>
+            <label for="setting-school-name">School / family name <span class="hint">(appears on home screen and printed reports)</span></label>
             <input id="setting-school-name" type="text" placeholder="e.g. Emmert Academy" style="max-width:22rem;display:block;margin-top:.35rem">
           </div>
 
+          <div class="field-group" style="margin-top:1rem">
+            <label>School logo <span class="hint">(shown on the student home screen)</span></label>
+            <div id="logo-preview-wrap" style="margin:.4rem 0 .6rem">
+              <img id="logo-preview" src="" alt="School logo" hidden style="max-height:80px;max-width:240px;border-radius:6px;display:block;margin-bottom:.4rem">
+              <p id="logo-none-msg" class="hint" style="margin:0">No logo uploaded.</p>
+            </div>
+            <div class="inline-form" style="gap:.5rem;flex-wrap:wrap">
+              <label class="btn" style="cursor:pointer;display:inline-flex;align-items:center;gap:.3rem">
+                📁 Choose logo
+                <input id="logo-file-input" type="file" accept="image/png,image/jpeg,image/gif,image/webp,image/svg+xml" style="display:none">
+              </label>
+              <button type="button" id="logo-remove-btn" hidden>Remove logo</button>
+            </div>
+            <p class="hint" style="margin-top:.3rem">PNG, JPG, GIF, WebP, or SVG · max 2 MB</p>
+          </div>
+
           <div class="field-group" style="margin-top:1rem">
             <label for="setting-passing-pct">Passing grade threshold</label>
             <div class="inline-form" style="margin-top:.35rem">

public/admin.js

@@ -58,12 +58,17 @@ $('#pin-form').addEventListener('submit', async (e) => {
   unlock();
 });
 
+function updateAdminHeader() {
+  $('#admin-school-name').textContent = `🎓 ${appSettings.schoolName || 'Homeschool'}`;
+}
+
 async function loadAppSettings() {
   try {
     const s = await api('/api/admin/app-settings');
     appSettings.schoolName = s.school_name || '';
     appSettings.passingPct = Number(s.passing_pct) || 80;
     appSettings.weekStartDay = s.week_start_day || 'monday';
+    updateAdminHeader();
   } catch {}
 }
 
@@ -2551,8 +2556,49 @@ async function loadSettings() {
   const radio = document.querySelector(`input[name="week_start_day"][value="${appSettings.weekStartDay}"]`);
   if (radio) radio.checked = true;
   $('#setting-show-emoji').checked = s.show_home_emoji !== false;
+
+  const pub = await fetch('/api/public-settings').then((r) => r.json()).catch(() => ({}));
+  setLogoPreview(pub.has_logo);
 }
 
+function setLogoPreview(hasLogo) {
+  const preview = $('#logo-preview');
+  const noneMsg = $('#logo-none-msg');
+  const removeBtn = $('#logo-remove-btn');
+  if (hasLogo) {
+    preview.src = `/api/logo?v=${Date.now()}`;
+    preview.hidden = false;
+    noneMsg.hidden = true;
+    removeBtn.hidden = false;
+  } else {
+    preview.hidden = true;
+    noneMsg.hidden = false;
+    removeBtn.hidden = true;
+  }
+}
+
+$('#logo-file-input').addEventListener('change', async (e) => {
+  const file = e.target.files[0];
+  if (!file) return;
+  if (file.size > 2 * 1024 * 1024) { msg('Logo must be under 2 MB.'); e.target.value = ''; return; }
+  const b64 = await new Promise((resolve, reject) => {
+    const reader = new FileReader();
+    reader.onload = () => resolve(reader.result.split(',')[1]);
+    reader.onerror = reject;
+    reader.readAsDataURL(file);
+  });
+  await api('/api/admin/upload-logo', { method: 'POST', body: { base64: b64, mime: file.type } });
+  e.target.value = '';
+  setLogoPreview(true);
+  msg('Logo saved.');
+});
+
+$('#logo-remove-btn').addEventListener('click', async () => {
+  await api('/api/admin/logo', { method: 'DELETE' });
+  setLogoPreview(false);
+  msg('Logo removed.');
+});
+
 $('#app-settings-form').addEventListener('submit', async (e) => {
   e.preventDefault();
   const school_name = $('#setting-school-name').value.trim();
@@ -2561,6 +2607,7 @@ $('#app-settings-form').addEventListener('submit', async (e) => {
   const show_home_emoji = $('#setting-show-emoji').checked;
   await api('/api/admin/app-settings', { method: 'POST', body: { school_name, passing_pct, week_start_day, show_home_emoji } });
   appSettings.schoolName = school_name;
+  updateAdminHeader();
   appSettings.passingPct = passing_pct;
   if (appSettings.weekStartDay !== week_start_day) {
     appSettings.weekStartDay = week_start_day;

public/app.js

@@ -247,6 +247,21 @@ async function loadHome() {
   document.querySelector('.page-confetti').style.display =
     pubSettings.show_home_emoji === false ? 'none' : '';
 
+  const nameTitle = document.getElementById('school-name-title');
+  if (pubSettings.school_name) {
+    nameTitle.textContent = pubSettings.school_name;
+    document.title = pubSettings.school_name;
+  }
+  const logoEl = document.getElementById('school-logo');
+  if (pubSettings.has_logo) {
+    logoEl.src = `/api/logo?v=${Date.now()}`;
+    logoEl.hidden = false;
+    nameTitle.hidden = true;
+  } else {
+    logoEl.hidden = true;
+    nameTitle.hidden = false;
+  }
+
   const students = await api('/api/students');
   $('#no-kids').hidden = students.length > 0;
   $('#kid-cards').innerHTML = students

public/index.html

@@ -34,11 +34,12 @@
 
   <!-- Kid picker -->
   <section id="view-home" class="view">
-    <h1 class="app-title">🎓 Homeschool</h1>
+    <h1 class="app-title" id="school-name-title">🎓 Homeschool</h1>
     <p class="subtitle">Who's learning today?</p>
     <div id="kid-cards" class="kid-cards"></div>
     <p id="no-kids" class="hint" hidden>No kids yet — a parent needs to add them.</p>
     <a class="parent-dash-card" href="admin.html">🔐 Parent dashboard</a>
+    <img id="school-logo" src="" alt="School logo" hidden>
   </section>
 
   <!-- Kid home: Today's work + nav -->

public/styles.css

@@ -53,6 +53,8 @@ body {
 }
 
 .app-title { font-size: 2.4rem; margin-bottom: 0.5rem; }
+
+#school-logo { display: block; margin: 2.5rem auto 0; max-width: min(520px, 92vw); height: auto; }
 .subtitle { font-size: 1.25rem; color: var(--muted); margin-bottom: 2rem; }
 .hint { color: var(--muted); margin: 1rem 0; }
 .error { color: var(--bad); margin: 0.5rem 0; }

server.js

@@ -3,7 +3,7 @@ import { join, dirname, extname } from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { spawnSync } from 'node:child_process';
 import { existsSync, mkdirSync, readFileSync, readdirSync, statSync } from 'node:fs';
-import { readFile, writeFile } from 'node:fs/promises';
+import { readFile, writeFile, unlink } from 'node:fs/promises';
 import { createHash, randomUUID } from 'node:crypto';
 import mammoth from 'mammoth';
 import multer from 'multer';
@@ -711,7 +711,56 @@ app.post('/api/admin/app-settings', requirePin, (req, res) => {
 });
 
 app.get('/api/public-settings', (req, res) => {
-  res.json({ show_home_emoji: getSetting('show_home_emoji') !== 'false' });
+  const logoExt = getSetting('logo_ext');
+  res.json({
+    show_home_emoji: getSetting('show_home_emoji') !== 'false',
+    school_name: getSetting('school_name') || '',
+    has_logo: !!(logoExt && existsSync(join(DATA_DIR, `logo${logoExt}`))),
+  });
+});
+
+app.get('/api/logo', (req, res) => {
+  const ext = getSetting('logo_ext');
+  if (!ext) return res.status(404).end();
+  const filePath = join(DATA_DIR, `logo${ext}`);
+  if (!existsSync(filePath)) return res.status(404).end();
+  const mimeMap = { '.png': 'image/png', '.jpg': 'image/jpeg', '.jpeg': 'image/jpeg', '.gif': 'image/gif', '.webp': 'image/webp', '.svg': 'image/svg+xml' };
+  res.setHeader('Content-Type', mimeMap[ext] || 'application/octet-stream');
+  res.setHeader('Cache-Control', 'no-cache');
+  res.sendFile(filePath);
+});
+
+app.post('/api/admin/upload-logo', requirePin, async (req, res) => {
+  const { base64: b64, mime } = req.body;
+  if (!b64 || !mime) return res.status(400).json({ error: 'base64 and mime required' });
+  const mimeToExt = { 'image/png': '.png', 'image/jpeg': '.jpg', 'image/gif': '.gif', 'image/webp': '.webp', 'image/svg+xml': '.svg' };
+  const ext = mimeToExt[mime];
+  if (!ext) return res.status(400).json({ error: 'Unsupported image type' });
+
+  let buffer;
+  try { buffer = Buffer.from(b64, 'base64'); }
+  catch (_) { return res.status(400).json({ error: 'Invalid base64' }); }
+
+  if (buffer.byteLength > 2 * 1024 * 1024) return res.status(400).json({ error: 'Logo must be under 2 MB' });
+
+  const oldExt = getSetting('logo_ext');
+  if (oldExt && oldExt !== ext) {
+    await unlink(join(DATA_DIR, `logo${oldExt}`)).catch(() => {});
+  }
+
+  await writeFile(join(DATA_DIR, `logo${ext}`), buffer);
+  const upsert = (k, v) => db.prepare(`INSERT INTO settings (key,value) VALUES (?,?) ON CONFLICT(key) DO UPDATE SET value=excluded.value`).run(k, String(v));
+  upsert('logo_ext', ext);
+  res.json({ ok: true });
+});
+
+app.delete('/api/admin/logo', requirePin, async (req, res) => {
+  const ext = getSetting('logo_ext');
+  if (ext) {
+    await unlink(join(DATA_DIR, `logo${ext}`)).catch(() => {});
+    db.prepare(`DELETE FROM settings WHERE key = 'logo_ext'`).run();
+  }
+  res.json({ ok: true });
 });
 
 // Validate MM-DD format (no year stored — birthday repeats annually)