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GlowTrack/specs/001-glowtrack-a-mood/research/05-png-export-fidelity.md
Danilo Reyes 2f096d0265 feat: Add GlowTrack mood and habit wellbeing grid specifications
- Introduced export schema for JSON data structure.
- Created renderer contract detailing canvas/SVG rendering requirements.
- Defined IndexedDB storage schema and migration strategies.
- Documented data model including entities and relationships.
- Developed implementation plan outlining execution flow and project structure.
- Provided quickstart guide for development environment setup.
- Compiled research documentation on performance, accessibility, and theming.
- Established feature specification with user scenarios and functional requirements.
2025-09-18 00:36:13 -06:00

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# Research: PNG Export Fidelity & Limits
## Hypothesis
Canvas toBlob can reliably export year-scale grids at screen resolution with acceptable memory and time on mid devices.
## Questions
- toBlob vs toDataURL performance/memory
- Max safe export dimensions before OOM
- Glyph/text crispness at DPR > 1
## Method
- Extend viz harness to export PNG; measure time and size
## Acceptance
- Export < 2s for year grid at scale 1.0 on mid device
- Document caps and UX messaging for long exports
## Deliverables
- Export pipeline guidance; caps; progress/error UX recommendations