add PDD workflow: CLAUDE.md, PDD.md, sprint spec with active symlink

2026-07-09 23:57:04 +08:00
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+# Product Definition Document — T YouTube
+
+## Vision
+
+A text-first YouTube experience — read transcripts, get AI summaries, never watch a video.
+
+## Goals
+
+1. **No-video YouTube** — read subscriptions, watch content as text, never open the YouTube app
+2. **Daily digest** — AI-summarized subscription feed delivered to Telegram daily
+3. **GFW-proof** — works reliably from China despite YouTube blocks
+
+## Target Users
+
+Self (Jimmy Gan). Primary use: morning skim of YouTube subscriptions via text summaries.
+
+## Success Metrics
+
+- Daily sync completes without errors
+- Telegram digest delivered every morning
+- < 5s page load for dashboard