Use git version of transformers for gemma4 architecture support

Fix tokenizer extra_special_tokens crash and stabilize transformers

chore: add protobuf and sentencepiece to requirements for gemma-4 tokenizer

fix: Use correct unsloth gemma-4 model identifiers

feat: Add percentage progress to downloading status in UI and extension

feat: Add download status polling to UI and Firefox extension

feat: Switch models to use Gemma 4 from unsloth collection

feat: Add support for switching models and the 27b-4a backend

feat: Add Global Saliency Calculation Mode

fix: remove preprompt text from final API response and exclude preprompt from score normalization

feat: Auto-recompute text in extension when saving settings

feat: add FlowRead Entire Page functionality to Firefox extension

docs: Add local and HF deployment options and Firefox extension instructions

docs: update study intro text to reflect 3 conditions

feat: add gradient condition to user study and preference questionnaire

Save study.db to writable /tmp or /data directory

Fix sqlite readonly permission issue

Redirect root to index.html for HF Space

Add Hugging Face Space configuration to README

fix: ensure tokens without whitespace group correctly and update hardcoded html

fix: syntax error in static/index.html preventing user study from starting

feat: finalized FlowRead AI with hardcoded user study and polished UI

Highlight 40 percent of words for maximum saliency in study

Lower threshold for user study to highlight more salient words

Hardcode study HTML to reduce API load

Emphasize benefits for general readers and those with attention deficits

Update README: remove emojis and refine Gemma argument

UI styling updates and README

Initial commit: text saliency pro with Gemma 2B