table improvements + additional project collection tracking

[bretth18]

Description

This PR introduces a new concept of "collections" (e.g., albums, EPs, singles) to group Ableton projects, and makes several database and UI improvements to support this feature. It also refines project deletion, improves JSON decode cache performance, and enhances sample file parsing for missing-sample detection.

Collections (Music Project Grouping):

• Added a new collections table and associated CollectionRecord model, with migration to schema version 5. Projects can now be assigned to a collection, and collections have metadata such as kind (album, EP, etc.) and status (planning, in progress, released, etc.). (abledex/Database/CollectionRecord.swift, abledex/Database/AppDatabase.swift, abledex.xcodeproj/project.pbxproj, abledex/Database/ProjectRecord.swift) [1] [2] [3] [4] [5] [6]

• Implemented CRUD operations for collections in the database layer, including assigning/removing projects to/from collections. (abledex/Database/AppDatabase.swift)

UI Enhancements:

• Updated the main content view to display a collection header when a collection is selected, and to show the correct navigation title. Added a developer-only toggle for switching between SwiftUI and NSTableView implementations. (abledex/ContentView.swift) [1] [2]

Database and Performance Improvements:

• Refactored project and location deletion to use GRDB's query interface for safer and more reliable UUID handling. (abledex/Database/AppDatabase.swift) [1] [2]
• Rewrote the JSON decode cache for project records to use a generation-based LRU eviction strategy, improving cache hit performance and reducing locking overhead. (abledex/Database/ProjectRecord.swift) [1] [2] [3]

Ableton Project Parsing:

• Enhanced the ALS parser to extract both absolute and relative sample file references for improved missing-sample detection, and to parse the minor version from the project header. (abledex/Scanner/ALSParser.swift) [1] [2] [3] [4] [5] [6]

These changes lay the groundwork for organizing projects into higher-level music releases, improve reliability and performance, and add new capabilities for sample management.

How to test

• Ensure all checks pass

Author checklist

This PR:

• Satisfies a goal that is specific & clearly motivated
• Adds value in isolation (whether user-facing or sustainability-related)
• Contains a concise & easy-to-understand title + description
• Adheres to SRP by default
• Presents the best possible implementation to meet its goal, given constraints at hand