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).

.github/docs/CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## 1.0.1 - 2026-05-25
+
+### Verified
+
+- Full surface-area parity audit against `@acamarata/qibla` (JS reference package).
+- All five public functions (`qiblaAngle`, `compassDir`, `compassName`,
+  `qiblaGreatCircle`, `distanceKm`) and three exported constants (`kaabaLat`,
+  `kaabaLng`, `earthRadiusKm`) confirmed present with idiomatic Dart typed
+  signatures and matching semantics. No gaps found.
+- 48 tests pass; no changes to runtime code required.
+
 ## 1.0.0 - 2026-03-08
 
 ### Added

pubspec.yaml

@@ -3,7 +3,7 @@ description: >
   Qibla direction, great-circle path, and haversine distance for Dart and
   Flutter. Pure math, zero dependencies. Computes bearing to the Ka'bah
   from any point on Earth.
-version: 1.0.0
+version: 1.0.1
 repository: https://github.com/acamarata/qibla-dart
 issue_tracker: https://github.com/acamarata/qibla-dart/issues
 topics: