fix(claude): recognize percentage-only usage confidence (#526)

Preserve the official percentOnly confidence marker and show limited-detail text and a distinct panel badge without changing incomplete-quota guards.

Add regressions, translations, synthetic smoke scenarios and maintained behavior documentation. Track the independent Claude Platform icon gap found on the base commit with CLI 0.76.0 in TODO.md.
e215bd14b4Simone committed on 10/15/2026, 8:12:41 PM· committed by GitHubparentee93a5e
19 files changedLine totals unavailable