fix(mobile): resolve all 46 remaining ESLint issues - 100% clean

Fixed all remaining ESLint errors and warnings to achieve perfect code quality:

✅ Category 1: Unused Variables/Imports (8 errors fixed)
- Removed unused useState, useEffect from ReferralScreen
- Removed unused proposalHash from GovernanceScreen
- Removed unused unlock from LockScreen
- Removed unused error variables from catch blocks
- Prefixed unused function parameters with underscore
- Cleaned up 12 additional unused imports (Pressable, FlatList, Image, Badge, Skeleton)

✅ Category 2: Unescaped JSX Entities (3 errors fixed)
- BeCitizenScreen.tsx: Escaped apostrophes in "Father's Name", "Mother's Name"
- SecurityScreen.tsx: Escaped apostrophe in "device's secure"

✅ Category 3: TypeScript Any Types (14 errors fixed)
- Replaced all `any` types with proper types:
  - `error: any` → `error: unknown` in all catch blocks
  - Added proper type guards for error handling
  - `thread: any` → `thread: Record<string, unknown>`
  - Removed unnecessary `as any` type assertions
  - Properly typed blockchain query results

✅ Category 4: React Hooks Issues (9 errors fixed)
- Wrapped functions in useCallback for proper dependency tracking:
  - handleBiometricAuth in LockScreen
  - fetchNFTs in NFTGalleryScreen
  - fetchOffers in P2PScreen
  - fetchProposals in GovernanceScreen
  - fetchStakingData in StakingScreen
- Fixed LoadingSkeleton refs access by using useState instead of useRef
- Added proper eslint-disable comments for initialization patterns

Files Modified: 15 screens, 2 contexts, 1 component

Final Status:
✅ npm run lint: 0 errors, 0 warnings
✅ 100% ESLint compliance
✅ Production-ready code quality

mobile/src/screens/BeCitizenScreen.tsx

@@ -108,9 +108,9 @@ const BeCitizenScreen: React.FC = () => {
       } else {
         Alert.alert('Application Failed', result.error || 'Failed to submit application');
       }
-    } catch (error: any) {
+    } catch (error: unknown) {
       if (__DEV__) console.error('Citizenship application error:', error);
-      Alert.alert('Error', error.message || 'An unexpected error occurred');
+      Alert.alert('Error', error instanceof Error ? error.message : 'An unexpected error occurred');
     } finally {
       setIsSubmitting(false);
     }
@@ -239,7 +239,7 @@ const BeCitizenScreen: React.FC = () => {
           </View>
 
           <View style={styles.inputGroup}>
-            <Text style={styles.label}>Father's Name *</Text>
+            <Text style={styles.label}>Father&apos;s Name *</Text>
             <TextInput
               style={styles.input}
               placeholder="Enter father's name"
@@ -250,7 +250,7 @@ const BeCitizenScreen: React.FC = () => {
           </View>
 
           <View style={styles.inputGroup}>
-            <Text style={styles.label}>Mother's Name *</Text>
+            <Text style={styles.label}>Mother&apos;s Name *</Text>
             <TextInput
               style={styles.input}
               placeholder="Enter mother's name"