# Implementation: Rewrite VRAM Detection as Python Script

## Summary
Replaced `scripts/vram_detect.sh` with `scripts/vram_detect.py`, a testable Python implementation that produces the same JSON output and fixes several bugs.

## Files Changed
- `scripts/vram_detect.py` (new)
- `scripts/vram_detect.sh` (deleted)
- `scripts/install.sh` — updated to run Python script and parse JSON with Python
- `README.md` — updated references
- `prompts/onboarding.md` — updated references and invocation
- `prompts/decompose.md` — updated references
- `prompts/orchestrate.md` — updated references

## Bugs Fixed
- Undefined `$headroom_pct` in manual mode.
- Hardcoded `"headroom": 0.25` in JSON output.
- Code-block values in `config.md` being parsed as live config.
- GPU-counting/output ordering bug.
- 10KB file-read limit now enforced for API config files.

## Verification
- `python scripts/vram_detect.py` runs and emits valid JSON.
- `python scripts/vram_detect.py gpt-4o` detects 128k context.
- `python scripts/vram_detect.py --model claude-3-5-sonnet` detects 200k context.
- `rg "vram_detect\.sh" README.md scripts/install.sh prompts/` returns no matches.