Update README: add achievement/track/sponsor tags, expand story section

Fix broken relative links in README and FIELD_NOTES

Final hackathon submission: README, Field Notes, UI overhaul, fine-tuned model

Add panel parental, fix app.py docstring, model card, and open trace

Pivot LLM runtime: llama.cpp (CPU) -> transformers + ZeroGPU

Pin Space to Python 3.12 (matches the env we validated locally)

Match Space's provisioned gradio/python versions in frontmatter

Rename persona Lumi -> Sofía, prep for HF Space deploy

Initial commit: Lumi pipeline migrated to llama.cpp, local-first TTS