Disable Worker proxy on HF Spaces - .workers.dev DNS unresolvable

Add WORKER_URL debug logging to diagnose HF Spaces secret injection

Strip whitespace from env vars to prevent DNS resolution failures

Fix Railway deployment: encoding bug, healthcheck, deps pinning, Dockerfile optimization

Fix YouTube IP block: preserve original headers in Worker proxy + route cookie fallback through Worker

Increase backend URL limit from 20 to 100

Optimize Instagram extraction to ~4s (was ~8s)

Optimize Instagram extraction: 8s -> 5s with persistent browser

Add cookie-free Instagram extraction via embed page

Speed up Instagram extraction + auto-copy checked by default

Fix Chromium crash in Docker: add --no-sandbox and --disable-dev-shm-usage

Trigger rebuild with Dockerfile builder v2.0.0

Add Instagram transcript extraction with Playwright + Groq Whisper

Force Railway rebuild with version update

Add i18n, SRT/VTT export, playlist support, and feedback system

Improve transcript fetch reliability with 3-stage fallback

Improve language option and split download buttons

Improve retry reliability and add retry-failed button

Add concurrency limit and retry for YouTube rate limiting

Fix WorkerProxySession to inherit from requests.Session

Add Cloudflare Worker proxy for YouTube IP bypass

Add dual API fallback and proxy support

Improve error handling and optimize retry logic

Fix cookie loading for Railway container environment

Add YouTube cookie support for reliable transcript fetching

UI polish: i18n toggle, Apple-style design, token count

Add new features: title display, dark mode, history, URL cleanup

Add retry logic for YouTube transcript fetching

Initial commit: YouTube transcript extraction web service