refactor: pecah lib/api.ts dan constants/Styles.ts per domain

- lib/api.ts (879 baris) → 13 file di lib/api/ per domain
- constants/Styles.ts (1.275 baris) → 10 file di constants/styles/ per domain
- tambah docs/FILE-HEALTH.md dan referensinya ke CLAUDE.md
- kedua file lama tetap sebagai re-export — zero breaking changes

constants/styles/spacing.styles.ts

@@ -0,0 +1,60 @@
+import { StyleSheet } from "react-native";
+
+const SpacingStyles = StyleSheet.create({
+   mb05: { marginBottom: 5 },
+   mb08: { marginBottom: 8 },
+   mb10: { marginBottom: 10 },
+   mb12: { marginBottom: 12 },
+   mb13: { marginBottom: 13 },
+   mb15: { marginBottom: 15 },
+   mb20: { marginBottom: 20 },
+   mb30: { marginBottom: 30 },
+   mb50: { marginBottom: 50 },
+   mb100: { marginBottom: 100 },
+   mt02: { marginTop: 2 },
+   mt05: { marginTop: 5 },
+   mt10: { marginTop: 10 },
+   mt15: { marginTop: 15 },
+   mt30: { marginTop: 30 },
+   mr05: { marginRight: 5 },
+   mr10: { marginRight: 10 },
+   ml05: { marginLeft: 5 },
+   ml10: { marginLeft: 10 },
+   ml15: { marginLeft: 15 },
+   ml20: { marginLeft: 20 },
+   ml25: { marginLeft: 25 },
+   mv05: { marginVertical: 5 },
+   mv10: { marginVertical: 10 },
+   mv15: { marginVertical: 15 },
+   mv50: { marginVertical: 50 },
+   mh03: { marginHorizontal: 3 },
+   mh05: { marginHorizontal: 5 },
+   mh10: { marginHorizontal: 10 },
+   mh15: { marginHorizontal: 15 },
+   p0: { padding: 0 },
+   p05: { padding: 5 },
+   p10: { padding: 10 },
+   p15: { padding: 15 },
+   p20: { padding: 20 },
+   pb05: { paddingBottom: 5 },
+   pb07: { paddingBottom: 7 },
+   pb10: { paddingBottom: 10 },
+   pb13: { paddingBottom: 13 },
+   pb15: { paddingBottom: 15 },
+   pb20: { paddingBottom: 20 },
+   pb50: { paddingBottom: 50 },
+   pb100: { paddingBottom: 100 },
+   ph05: { paddingHorizontal: 5 },
+   ph10: { paddingHorizontal: 10 },
+   ph15: { paddingHorizontal: 15 },
+   ph16: { paddingHorizontal: 16 },
+   ph20: { paddingHorizontal: 20 },
+   pv03: { paddingVertical: 3 },
+   pv05: { paddingVertical: 5 },
+   pv10: { paddingVertical: 10 },
+   pv14: { paddingVertical: 14 },
+   pv15: { paddingVertical: 15 },
+   pv20: { paddingVertical: 20 },
+});
+
+export default SpacingStyles;