Fix elevation, POIs, and alerts by bundling pre-compiled track cache and adding Gradio allowed_paths

Fix voice ASR fallback to transformers on Hugging Face and stop simulation timer at trek completion

fix: use relative PRELOADED_ROUTE_PATH, pin gradio==5.15.0 and pydantic<2.11 to stop bool schema crash

Update huggingface_hub pin range to >=0.25.1,<1.0.0

Pin huggingface_hub to <0.25.0 to resolve HfFolder import issue

Add pywhispercpp and miniaudio to requirements.txt

Initial commit: Set up Trailhead structure, Docker, README, and .gitignore