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Upload server.py with huggingface_hub

Upload server.py with huggingface_hub

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Fix: server.py with HF Space guard

Fix: README with app_file=app.py

Fix: re-upload correct server.py and README.md

Fix: switch app_file to app.py for HF Spaces, guard uvicorn.run on Spaces

[NAH-24] Create empty HF Space (Gradio SDK) + repo under build-small-hackathon

[NAH-36] Custom Recall frontend (gr.Server) + JSON API over the backend (#17)

[NAH-35] make the recap reachable: Finish & Keep studying buttons (#16)

[NAH-34] fix Gradio 6 theme placement + pin gradio version (#15)

[NAH-32] difficulty toggle UI: make-it-harder / make-it-easier (#14)

[NAH-31] visual polish: card X of N progress, clearer cues (#13)

[NAH-30] loading spinners on every model call + button locking (#12)

[NAH-23] handle bad inputs: empty / image-only / corrupt PDF -> clear error (#11)

[NAH-22] regenerate(card, harder/easier) helper for the difficulty dial (#10)

[NAH-21] tighten generation prompt: ground questions in the passage (#9)

[NAH-20] de-dupe near-identical questions + drop low-quality cards (#8)

[NAH-18] generate_deck: add repair-retry to per-chunk JSON parsing (#7)

Merge pull request #6 from francisco-magana/hygienepile-0k/nah-15-write-the-model-section-of-the-readme

Merge pull request #5 from francisco-magana/hygienepile-0k/nah-9-1b-fallback-ready-as-a-config-flip-bring-to-day-1-400-sync

Merge pull request #4 from francisco-magana/hygienepile-0k/nah-13-weak-topic-targeting-bias-queue-toward-low-grade-topics

Merge pull request #3 from francisco-magana/hygienepile-0k/nah-8-grade_answer-strict-json-grading-parserrepair-retry

[NAH-15] README: add the model section

[NAH-9] Make the smaller-model fallback a one-env-var config flip

[NAH-13] Weak-topic targeting: bias next_card toward low-grade topics

Merge pull request #2 from francisco-magana/franciscomaganacontact/nah-16-commit-content_pipelinepy-stubs

[NAH-8] grade_answer: strict-JSON grading + parser/repair retry

[NAH-16] Commit content_pipeline.py stubs

Merge pull request #1 from francisco-magana/franciscomaganacontact/nah-17-extract_text-pdf-pastedtxt-length-based-chunker

[NZH-17] extract_text (PDF + pasted/.txt) + length-based chunker

Add app, content pipeline, learning engine, and gitignore

first commit