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.

specs/001-glowtrack-a-mood/research/01-viz-performance.md

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+# Research: Canvas/SVG Performance on Mobile
+
+## Hypothesis
+We can sustain 60 fps for 150–365 tiles with glow/overlay on mid-range devices by batching draws and minimizing per-frame allocations.
+
+## Questions
+- FPS across tile counts (30, 90, 180, 365) and DPR (1.0, 2.0, 3.0)
+- Cost of static overlay and glyph rendering
+- Breakpoints for reduced motion or static rendering
+
+## Method
+- Use `/packages/viz/poc/index.html` harness
+- Test devices: low-end Android, mid Android, iPhone
+- Record FPS and memory; profile with devtools
+
+## Test Matrix (fill during runs)
+| DPR | Animate | Tiles | FPS | Notes |
+|-----|---------|-------|-----|-------|
+| 1   | false   | 30    |     |       |
+| 1   | false   | 90    |     |       |
+| 1   | false   | 180   |     |       |
+| 1   | false   | 365   |     |       |
+| 1   | true    | 30    |     |       |
+| 1   | true    | 90    |     |       |
+| 1   | true    | 180   |     |       |
+| 1   | true    | 365   |     |       |
+| 2   | false   | 30    |     |       |
+| 2   | false   | 90    |     |       |
+| 2   | false   | 180   |     |       |
+| 2   | false   | 365   |     |       |
+| 2   | true    | 30    |     |       |
+| 2   | true    | 90    |     |       |
+| 2   | true    | 180   |     |       |
+| 2   | true    | 365   |     |       |
+
+## Acceptance
+- 55–60 fps at 180 tiles on mid devices
+- Document fallback thresholds and settings
+
+## Deliverables
+- Metrics table; recommendations for renderer design