* fix(compression): log warnings for unreadable settings rows
getCompressionSettings() silently skipped non-string (BLOB) and
invalid-JSON settings rows, making it impossible to diagnose config
drift between the panel and the runtime.
Now logs a warn-level message for each unreadable row, including the
key name and a remediation hint (re-save from the Storage panel).
Also warns when the 'engines' row exists but yields no valid toggles,
so operators know their panel-configured engines map is being silently
replaced by the legacy fallback.
Fixes#13456
* test(compression): cover getCompressionSettings warnings for unreadable rows
The test for #13456 only asserted a stubbed console.warn recorded a
message and never called getCompressionSettings(), so it never
exercised the production change. Seed a BLOB row, an invalid-JSON row,
and an 'engines' row that isn't a usable object, and assert the
resulting warnings; also assert a legitimately empty (but valid)
'engines' map does not warn.
Also stop warning on a valid-but-empty 'engines' row: parseStoredEnginesMap
returns null both for an unreadable row and for a well-formed {} (an
operator who deliberately disabled every engine), so only warn when the
stored value isn't a usable object at all.
Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>
---------
Co-authored-by: Koosha Pari <koosha@phenotype.ai>
Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>
