* chore: surface-area parity audit vs qibla-js, bump to v1.0.1
Full gap analysis: qibla-dart already matches @acamarata/qibla on all five
public functions (qiblaAngle, compassDir, compassName, qiblaGreatCircle,
distanceKm) and three constants (kaabaLat, kaabaLng, earthRadiusKm).
No runtime gaps found; 48/48 tests pass unchanged.
Patch bump documents the audit and closes T-E10-01 (Mega Phase 1).
* docs: add CHANGELOG.md for v1.0.1 release
* chore: polish pubspec, add wiki docs
