`lib/test_app.dart` printed [testmode] / [testmode:json] lines via
the bare `print` builtin, which tripped the `avoid_print` analyze
rule 38 times — by far the loudest source of analyze noise in the
tree.
Routes everything through a `Logger()` instance held on
`_ClideTestAppState`, with a small `_say(msg)` helper for
human-readable lines and a separate `'testmode:json'` source for
the structured summary the harness greps. The default Logger sink
is stderr; `make run-testmode` already pipes `2>&1`, so the
existing `grep -q '"failed":0'` check is unaffected.
Also drops the now-redundant kernel sub-imports (events/bus,
events/types, log, toolchain) — `kernel/kernel.dart` re-exports
them, and the analyzer flagged the doubles as unnecessary.
Project analyze: 107 → 65 issues. test_app.dart is now clean
(0 issues, was 42).
Co-Authored-By: Claude <noreply@anthropic.com>