Add bean for test data injection in dev environment

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.beans/nuzlocke-tracker-ycfs--inject-test-data-into-dev-environment.md

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+---
+# nuzlocke-tracker-ycfs
+title: Inject test data into dev environment
+status: todo
+type: task
+created_at: 2026-02-06T09:48:38Z
+updated_at: 2026-02-06T09:48:38Z
+---
+
+Create a mechanism to populate the development database with realistic test data for manual testing and development.
+
+## Goals
+- Enable developers to quickly set up a populated dev environment
+- Provide realistic data scenarios for testing UI components
+- Support resetting/refreshing test data easily
+
+## Potential Checklist
+- [ ] Define test data requirements (users, playthroughs, encounters, etc.)
+- [ ] Create test data fixtures or factory functions
+- [ ] Add CLI command or script to inject test data
+- [ ] Document how to use the test data injection
+- [ ] Ensure test data can be reset/cleared if needed