Improve story, narration, and illustration prompts

Three-step output order: audio → PDF download → book pages

Yield audio before PDF: narration ready first, then downloads

Remove char name field + page slider; illustrated PDF cover

Fix voice freeze, cover design, output order, story continuity

Single Storybook tab: remove Bedtime/Kannada, add Custom Voice + page count + 4 new themes

Fix Kannada narration: 3-tier TTS + error surfacing + longer English audio

Improve story quality: richer 2-3 sentence pages, better narration

Fix ZeroGPU model re-download loop causing browser freeze

Fix Bedtime Voice tab hanging when voice clip submitted

Fix Kannada narration: swap gated ai4bharat models for open alternatives

Fix gated-model startup crash and bedtime UI contrast

Add Bedtime Voice tab: Kannada narration, voice cloning, richer story engine

Crayon art style, parallel/early narration, reveal PDF download buttons, coloring = img2img from color pages

Upgrade Space to gradio 6 so voxcpm==2.0.3 (VoxCPM2) installs; move theme/css/js/head to launch(); fix removed show_copy_button

Fix ZeroGPU build: real FLUX+VoxCPM, 3-model cleanup, remove Tiny Mode (#1)

Restore Codex zerogpu-space-copy: model caching, theme templates, parallel TTS, heartbeat

Use Codex zerogpu-space-copy app.py with model caching, theme templates, parallel TTS

DoodleBook: ZeroGPU app with parallel TTS, heartbeat, queue