refactor: split shared into packages

[tomast1337]

This pull request introduces several structural and configuration changes to the whole project, primarily focused on spiting the project server, web and shared packages into separate @nbw/backend, @nbw/frontend, @nbw/database, @nbw/song, @nbw/thumbnail, @nbw/sounds and @nbw/config.

The following diagram shows the new structure of the project:

graph TD
    subgraph "Applications"
        Backend["@nbw/backend<br/>(Backend App)"]
        Frontend["@nbw/frontend<br/>(Frontend App)"]
    end
    
    subgraph "Workspace Packages"
        Config["@nbw/config<br/>(Configuration)"]
        Database["@nbw/database<br/>(Database Entities & DTOs)"]
        Song["@nbw/song<br/>(Song Processing)"]
        Sounds["@nbw/sounds<br/>(Sound Management)"]
        Thumbnail["@nbw/thumbnail<br/>(Thumbnail Generation)"]
    end
    
    %% Workspace package dependencies
    Database --> Config
    Song --> Database
    Thumbnail --> Song
    
    %% Backend dependencies
    Backend --> Database
    Backend --> Song
    Backend --> Thumbnail
    Backend --> Sounds
    
    %% Frontend dependencies (through workspace)
    Frontend -.-> Config
    Frontend -.-> Database
    Frontend -.-> Song
    Frontend -.-> Thumbnail
    
    %% Styling
    classDef appStyle fill:#e1f5fe,stroke:#0277bd,stroke-width:2px
    classDef pkgStyle fill:#f3e5f5,stroke:#7b1fa2,stroke-width:2px
    classDef leafStyle fill:#e8f5e8,stroke:#388e3c,stroke-width:2px
    
    class Backend,Frontend appStyle
    class Database,Song,Thumbnail pkgStyle
    class Config,Sounds leafStyle

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Bun and Testing Improvements

• Refined test scripts in package.json to run tests specifically on src/**/*.spec.ts and e2e/**/*.spec.ts, improving test targeting and coverage.

• Added .cursor/rules/use-bun-instead-of-node-vite-npm-pnpm.mdc to document and enforce the use of Bun over Node.js, npm, pnpm, or vite, including recommendations for APIs, testing, and frontend workflows.

[Bentroen]

Looks great! Thank you for working on these changes =)

Some extra things (besides the review comments) we gotta make sure are working before merging:

• Update VSCode workspace file, test running etc. to reflect the new project structure
• Update GitHub Actions to reflect the new project structure

[Bentroen]

We had originally decided to leave build.ts in the root of the project, as it was depended upon by both the frontend and the backend. With the new project structure, doesn't it belong in one of the different packages we created?
(Adding @nbw/sounds as the one single global workspace dependency looks a bit weird to me, haha :) )

[Bentroen]

For consistency, could we rename the build commands to use frontend and backend too, like the package names?

[Bentroen]

As a result of introducing separate packages, first-party package imports have been grouped with third-party ones (see this file as an example). The @nbw/ group should be added as a local package group in ESLint - I'll look up how we can do this again :)

[Bentroen]

Following the rest of the project's structure, this file could be moved to the source file's path, and renamed to stats.spec.ts (as we'll likely add test files for the other modules in there)

[Bentroen]

To avoid all the repetition, would it be possible to use a shared tsconfig.json using extends with these common package configurations?

[Bentroen]

The separate .gitignore files may not be necessary, in case the root's package.json already takes care of them

[Copilot]

Pull Request Overview

This PR restructures the monorepo by splitting the original server, web, and shared packages into focused workspace packages and applications. It creates a more modular architecture with separate packages for configuration, database entities, song processing, thumbnail generation, and sound management, while establishing clear dependency relationships between components.

• Splits the monolithic structure into focused packages (@nbw/config, @nbw/database, @nbw/song, @nbw/thumbnail, @nbw/sounds)
• Creates dedicated application packages (@nbw/backend, @nbw/frontend)
• Updates all import paths throughout the codebase to use the new package structure

Reviewed Changes

Copilot reviewed 124 out of 398 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
packages/configs/	New configuration package with shared constants and types
packages/database/	New database package setup with gitignore and eslint config
apps/frontend/	Updated frontend with new import paths and package structure
apps/backend/	Updated backend with new import paths and dependency references
package.json	Root package updated with new workspace structure and exports
build.ts	Updated build script to use new package imports

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