feat: app: change workouts tab to library

[apedley]

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Description

This PR changes the Workout tab to the Library tab. The library tab is for reusable items such as foods, meals, and workout plans. I have only added foods for now and meals will come very soon. Users can see all the foods they can access, log them, edit and delete foods they own.

Also included a number of tiny fixes:

• Agent doc updates
• Fixed bottom sheet appearing under modals
• Fixed [Feature]: Allow logging food entries to future dates in mobile app (iOS) #1162 and we now allow selecting dates in the future

Linked Issue: #1162

How to Test

1. Visit library tab

PR Type

• Issue (bug fix)
• New Feature
• Refactor
• Documentation

Checklist

All PRs:

• [MANDATORY - ALL] Integrity & License: I certify this is my own work, free of malicious code, and I agree to the License terms.

New features only:

• [MANDATORY for new feature] Alignment: I have raised a GitHub issue and it was reviewed/approved by maintainers or it was approved on Discord.

Frontend changes (SparkyFitnessFrontend/ or src/):

• [MANDATORY for Frontend changes] Quality: I have run pnpm run validate and it passes.
• [MANDATORY for Frontend changes] Translations: I have only updated the English (en) translation file.

Backend changes (SparkyFitnessServer/):

• [MANDATORY for Backend changes] Code Quality: I have run typecheck, lint, and tests. New files use TypeScript, new endpoints have Zod schemas, and new endpoints include tests.
• [MANDATORY for Backend changes] Database Security: I have updated rls_policies.sql for any new user-specific tables.

UI changes (components, screens, pages):

• [MANDATORY for UI changes] Screenshots: I have attached Before/After screenshots below.

Screenshots

Click to expand

Before

After

Notes for Reviewers

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[gemini-code-assist]

Code Review

This pull request introduces a comprehensive Food Library feature to the mobile application, enabling users to browse, view details, edit, and delete saved foods. Key changes include the replacement of the Workouts tab with a new Library tab, the addition of paginated food searching, and the implementation of a detailed food nutrition summary component. Furthermore, the documentation for both the monorepo root and the server package has been updated to reflect the transition to a TypeScript-first environment using ESM and Vitest. I have no feedback to provide.