refactor: code quality cleanup — remove any types, add logger, rename Kine to Tabata

- Phase 0: Rename all Kine references to Tabata (types, files, imports, i18n, analytics events)
- Phase 1: Add test coverage for tabataProgramStore, workoutProgramStore, and color utils (47 tests)
- Phase 2: Remove all `any` types from production code with proper typed replacements
- Phase 3: Replace ~60 raw console.* calls with __DEV__-gated logger utility
- Phase 4: Verify .DS_Store housekeeping (already clean)

0 TypeScript errors, 583/583 tests passing.

app/privacy.tsx

@@ -13,6 +13,7 @@ import { useTranslation } from 'react-i18next'
 import { useHaptics } from '@/src/shared/hooks'
 import { darkColors, BRAND } from '@/src/shared/theme'
 import { SPACING } from '@/src/shared/constants/spacing'
+import { TYPOGRAPHY, FONT_FAMILY } from '@/src/shared/constants/typography'
 
 export default function PrivacyPolicyScreen() {
   const { t } = useTranslation('screens')
@@ -144,7 +145,7 @@ const styles = StyleSheet.create({
     paddingHorizontal: SPACING[4],
     paddingVertical: SPACING[3],
     borderBottomWidth: 1,
-    borderBottomColor: darkColors.border.glass,
+    borderBottomColor: darkColors.border.dim,
   },
   backButton: {
     width: 44,
@@ -153,8 +154,7 @@ const styles = StyleSheet.create({
     justifyContent: 'center',
   },
   headerTitle: {
-    fontSize: 17,
-    fontWeight: '600',
+    ...TYPOGRAPHY.HEADLINE,
     color: darkColors.text.primary,
   },
   scrollView: {
@@ -168,13 +168,13 @@ const styles = StyleSheet.create({
     marginBottom: SPACING[6],
   },
   sectionTitle: {
-    fontSize: 20,
-    fontWeight: '700',
+    ...TYPOGRAPHY.TITLE_3,
+    fontFamily: FONT_FAMILY.SANS_BOLD,
     color: darkColors.text.primary,
     marginBottom: SPACING[3],
   },
   paragraph: {
-    fontSize: 15,
+    ...TYPOGRAPHY.BODY,
     lineHeight: 22,
     color: darkColors.text.secondary,
   },
@@ -186,18 +186,18 @@ const styles = StyleSheet.create({
     marginBottom: SPACING[2],
   },
   bullet: {
-    fontSize: 15,
+    ...TYPOGRAPHY.BODY,
     color: BRAND.PRIMARY,
     marginRight: SPACING[2],
   },
   bulletText: {
     flex: 1,
-    fontSize: 15,
+    ...TYPOGRAPHY.BODY,
     lineHeight: 22,
     color: darkColors.text.secondary,
   },
   email: {
-    fontSize: 15,
+    ...TYPOGRAPHY.BODY,
     color: BRAND.PRIMARY,
     marginTop: SPACING[2],
   },