What we built, and why

Author of every topic text at three CEFR levels — 36 pieces in total. Long-context reasoning lets one prompt set the style guide, pacing, and level rules for a whole topic family.

所有 36 段腳本的作者；靠長上下文一次設定一個題目家族的風格、節奏與程度規則。

The single operator. Wrote the Bicep, the Next.js app, the Prisma schema, the TTS pipeline, and every deploy script. Drove the session from empty repo to live HTTPS URL in one day.

唯一的工程師。寫了 Bicep、Next.js App、Prisma Schema、TTS 批次、部署腳本，一天內把空 repo 做到 HTTPS 上線。

Hosts the Next.js runtime with managed TLS, system-assigned managed identity, and scale-to-zero.

Next.js 運行層；自動 TLS、系統指派 MSI、零流量時自動縮到零。

Stores topics, level-tagged speech texts, voice metadata, and blob URLs. Auto-pauses after an hour of idle.

儲存題目、分程度腳本、語音標籤、音檔連結；閒置一小時自動暫停。

Holds the 36 MP3 files. Served publicly with a cache-buster query string so regenerations don't hit stale browser caches.

存放 36 個 MP3；公開讀取，URL 帶 cache-buster 避免瀏覽器吃到舊版音檔。

Turns the texts into natural-sounding audio using six distinct voices across US / UK / AU English and Traditional Chinese, with SSML rate control per level.

把腳本轉成人聲，美／英／澳六種英語口音搭配繁中男女聲，並用 SSML 依程度調整語速。

All secrets (DB connection, Speech key, LINE tokens) live in Key Vault. The Container App reads them through its system-assigned identity — no credentials in code, no .env files in production.

所有機密（資料庫連線、Speech key、LINE token）放 Key Vault，Container App 走 MSI 取用；程式碼沒有憑證、production 也沒有 .env。

App-Router, server-rendered topic list and detail pages. Force-dynamic rendering means every page reflects the current DB state — generation progress shows live.

App Router 架構，伺服端渲染；force-dynamic 讓每次請求都讀最新資料庫，音檔生成進度即時可見。