kinogaki-shared

The crates Studio and its plugins share, built once as a Rust dylib.

Studio links its standard library dynamically (-C prefer-dynamic, .cargo/config.toml) and links this library, so the process holds one copy of the standard library, the SDK (kinogaki-studio-api), its standard geometry values (kinogaki-geometry), its edit contracts (kinogaki-edit) and its UI layer (kinogaki-studio-ui-api, which plugins' contexts draw through), the render interface (kinogaki-render-api), the viewport packet contract (kinogaki-viewport-api) and wgpu, and each plugin links the same copies: values cross as plain Rust types, statics are shared and TypeIds agree. Studio's crates name these crates directly as usual; the compiler takes them from here because this library holds them.

Plugins are built against exactly this build (the kit), and Studio refuses any built against another: BUILD names this build, each plugin records it when it is compiled (link!), and Studio's loader compares the plugin's record with the BUILD of the library it runs with before it calls anything in the plugin. Nothing at link time notices a plugin compiled against another build: it loads, then misbehaves (a changed layout read with the old one).