Redesign Nuggets upload portal: single episode submission form; v2.0.5

- Replace two-tab file picker with a combined form: episode name, passage,
  description, and audio file in one submit
- Server now generates an Episode Info text file (name, host, passage,
  description, timestamp) and uploads it to /Episode Info/ automatically,
  while the audio goes to /Episode Upload/
- Drop zone changes color when a valid file is selected (green border)
- Success shows submitted episode name and filename in the session log

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

server/routes/nuggets-host-upload.js

@@ -184,7 +184,7 @@ export function register(app) {
     res.json({ ok: true })
   })
 
-  // ── File upload ───────────────────────────────────────────────────────
+  // ── Episode upload (audio file + metadata) ───────────────────────────
 
   app.post('/api/nuggets-upload/upload', requireHostAuth, upload.single('file'), async (req, res) => {
     if (!req.file) {
@@ -192,10 +192,19 @@ export function register(app) {
       return
     }
 
-    const targetDir = req.body?.targetDir === 'info' ? SEAFILE_EPISODE_INFO_DIR : SEAFILE_EPISODE_UPLOAD_DIR
+    const session = getHostSession(req)
+    const episodeName = typeof req.body?.episodeName === 'string' ? req.body.episodeName.trim() : ''
+    const passage = typeof req.body?.passage === 'string' ? req.body.passage.trim() : ''
+    const description = typeof req.body?.description === 'string' ? req.body.description.trim() : ''
     const originalName = req.file.originalname || req.file.filename
     const tempPath = req.file.path
 
+    if (!episodeName || !passage) {
+      await unlink(tempPath).catch(() => {})
+      res.status(400).json({ message: 'Episode name and passage are required.' })
+      return
+    }
+
     if (!seafileConfigured()) {
       await unlink(tempPath).catch(() => {})
       res.status(503).json({ message: 'Seafile is not configured on this server. Contact the admin.' })
@@ -206,14 +215,33 @@ export function register(app) {
       const { readFile: rf } = await import('node:fs/promises')
       const fileBuffer = await rf(tempPath)
 
-      const uploadLink = await getSeafileUploadLink(targetDir)
-      await uploadToSeafile(uploadLink, fileBuffer, originalName, targetDir)
-
+      // Upload audio to /Episode Upload/
+      const audioLink = await getSeafileUploadLink(SEAFILE_EPISODE_UPLOAD_DIR)
+      await uploadToSeafile(audioLink, fileBuffer, originalName, SEAFILE_EPISODE_UPLOAD_DIR)
       await unlink(tempPath).catch(() => {})
 
-      const session = getHostSession(req)
-      console.log(`[nuggets-upload] ${session?.hostName ?? 'unknown'} uploaded "${originalName}" to ${targetDir}`)
-      res.json({ ok: true, filename: originalName, dir: targetDir })
+      // Build and upload info file to /Episode Info/
+      const now = new Date()
+      const dateStr = now.toISOString().slice(0, 10)
+      const infoContent = [
+        `Episode: ${episodeName}`,
+        `Host: ${session?.hostName ?? 'Unknown'}`,
+        `Passage: ${passage}`,
+        `Audio File: ${originalName}`,
+        `Submitted: ${now.toUTCString()}`,
+        '',
+        'Description:',
+        description || '(none)',
+      ].join('\n')
+
+      const safeEpName = episodeName.replace(/[^a-z0-9 _-]/gi, '').trim().replace(/\s+/g, '-').slice(0, 60)
+      const infoFilename = `${dateStr}-${safeEpName}-info.txt`
+      const infoBuffer = Buffer.from(infoContent, 'utf8')
+      const infoLink = await getSeafileUploadLink(SEAFILE_EPISODE_INFO_DIR)
+      await uploadToSeafile(infoLink, infoBuffer, infoFilename, SEAFILE_EPISODE_INFO_DIR)
+
+      console.log(`[nuggets-upload] ${session?.hostName ?? 'unknown'} uploaded "${episodeName}" (${originalName})`)
+      res.json({ ok: true, episodeName, filename: originalName, infoFile: infoFilename })
     } catch (err) {
       await unlink(tempPath).catch(() => {})
       console.error('[nuggets-upload] upload error:', err.message)