audit F4 [docs]: `just check` doc-comment claims it runs browser tests but it does not

[intendednull]

File: justfile:3
Severity: docs
Obvious? yes

The header comment is # Run ALL checks (fmt, clippy, test, wasm, browser). Use before committing. but the recipe body on line 4 is check: fmt clippy test check-wasm — no test-browser. Misleading comment will cause contributors to skip running test-browser thinking check covered it.

Fix: since just check-all is the explicit "everything" gate per CLAUDE.md, drop "browser" from the check comment so the contract matches.

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Filed by /general-audit @ 88498a5 (2026-05-04). master: #600.