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/_layout.tsx

@@ -135,6 +135,18 @@ function RootLayoutInner() {
                 animation: 'slide_from_right',
               }}
             />
+            <Stack.Screen
+              name="workout/body-zone/[id]"
+              options={{
+                headerShown: true,
+                headerStyle: { backgroundColor: colors.bg.base },
+                headerShadowVisible: false,
+                headerTitle: '',
+                headerBackButtonDisplayMode: 'minimal',
+                headerTintColor: colors.text.primary,
+                animation: 'slide_from_right',
+              }}
+            />
             <Stack.Screen
               name="program/[id]"
               options={{