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.

packages/storage/poc/README.md

@@ -0,0 +1,12 @@
+# Storage Import & Migration Benchmark
+
+Benchmarks JSON import and basic IndexedDB migrations for GlowTrack.
+
+## Use
+- Open `import-benchmark.html` in a browser.
+- Click "Generate 3-year JSON" then "Import".
+- Observe timings for days vs entries transactions.
+
+## Goals
+- Determine chunking and transaction strategies.
+- Inform UX for progress and error handling.