Function analyse_in_memory 

pub fn analyse_in_memory(
    source: &str,
    target: BuildTarget,
    platform: Platform,
) -> Vec<AttributedError>

Analyse a single in-memory Bynk source and return all diagnostics — non-bailing, no emission (in-browser track, slice 5d). The editor calls this on every (debounced) keystroke for live diagnostics: unlike compile_in_memory (build mode, which bails at the first failing phase), this runs in Analyse mode, so parse / resolve / check diagnostics are recovered and reported together — and it works for a context (the playground’s typical program), not only a commons. Same fs-free seam as compile_in_memory.