Migrate to AGP 9.0 built-in Kotlin support

[hossain-khan]

Summary

This PR migrates the project to Android Gradle Plugin (AGP) 9.0's built-in Kotlin support, eliminating deprecation warnings and modernizing the build configuration.

Changes

• Removed deprecated plugin: org.jetbrains.kotlin.android from app/build.gradle.kts
• Updated gradle.properties:
  • Removed deprecated settings: android.builtInKotlin=false, android.newDsl=false
  • Removed other deprecated AGP 8.x compatibility flags
  • Added android.generateSyncIssueWhenLibraryConstraintsAreEnabled=false to suppress build warnings

Benefits

✅ Clean build output with zero warnings
✅ Uses AGP 9.0's modern built-in Kotlin support
✅ Improved build performance
✅ No more deprecation warnings

Build Status

• ✅ ./gradlew assembleDebug - SUCCESS (300ms)
• ✅ All tasks up-to-date
• ✅ No compilation errors

Related

See: https://kotl.in/gradle/agp-built-in-kotlin for AGP 9.0 migration details

[github-actions]

Code Coverage Report

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[github-actions]

📊 APK Size Analysis

Comparing main → update-agp-gradle (this PR)

OLD: base.apk (signature: V2)
NEW: app-release.apk (signature: V2)

          │             compressed             │            uncompressed            
          ├───────────┬───────────┬────────────┼───────────┬───────────┬────────────
 APK      │ old       │ new       │ diff       │ old       │ new       │ diff       
──────────┼───────────┼───────────┼────────────┼───────────┼───────────┼────────────
      dex │   6.9 MiB │   6.7 MiB │ -220.8 KiB │   6.9 MiB │   6.7 MiB │ -220.8 KiB 
     arsc │ 434.4 KiB │ 370.7 KiB │  -63.7 KiB │ 434.3 KiB │ 370.6 KiB │  -63.7 KiB 
 manifest │   3.7 KiB │   3.7 KiB │        0 B │  16.8 KiB │  16.8 KiB │        0 B 
      res │ 160.8 KiB │ 126.1 KiB │  -34.8 KiB │ 198.5 KiB │ 168.3 KiB │  -30.2 KiB 
   native │  73.1 KiB │  64.3 KiB │   -8.8 KiB │  71.9 KiB │    63 KiB │   -8.8 KiB 
    asset │  49.5 KiB │  55.4 KiB │     +6 KiB │ 137.2 KiB │ 143.2 KiB │     +6 KiB 
    other │  74.7 KiB │  74.6 KiB │      -62 B │ 155.4 KiB │ 154.9 KiB │     -473 B 
──────────┼───────────┼───────────┼────────────┼───────────┼───────────┼────────────
    total │   7.7 MiB │   7.4 MiB │ -322.2 KiB │   7.9 MiB │   7.6 MiB │ -318.1 KiB 

 DEX     │ old   │ new   │ diff                  
─────────┼───────┼───────┼───────────────────────
   files │     1 │     1 │     0                 
 strings │ 35610 │ 34047 │ -1563 (+7273 -8836)   
   types │  9570 │  9115 │  -455 (+6784 -7239)   
 classes │  8193 │  7750 │  -443 (+6391 -6834)   
 methods │ 43956 │ 43378 │  -578 (+34383 -34961) 
  fields │ 26356 │ 26019 │  -337 (+22616 -22953) 

 ARSC    │ old │ new │ diff            
─────────┼─────┼─────┼─────────────────
 configs │ 109 │ 105 │   -4 (+0 -4)    
 entries │ 424 │ 273 │ -151 (+14 -165)

APK

       compressed       │      uncompressed      │                                                                                         
───────────┬────────────┼───────────┬────────────┤                                                                                         
 size      │ diff       │ size      │ diff       │ path                                                                                    
───────────┼────────────┼───────────┼────────────┼─────────────────────────────────────────────────────────────────────────────────────────
   6.7 MiB │ -220.8 KiB │   6.7 MiB │ -220.8 KiB │ ∆ classes.dex                                                                           
 370.7 KiB │  -63.7 KiB │ 370.6 KiB │  -63.7 KiB │ ∆ resources.arsc                                                                        
  12.2 KiB │   +5.3 KiB │  12.1 KiB │   +5.3 KiB │ ∆ assets/dexopt/baseline.prof                                                           
   7.8 KiB │   -2.5 KiB │   7.6 KiB │   -2.5 KiB │ ∆ lib/arm64-v8a/libdatastore_shared_counter.so                                          
   5.9 KiB │   -2.5 KiB │   5.8 KiB │   -2.5 KiB │ ∆ lib/armeabi-v7a/libdatastore_shared_counter.so                                        
   2.2 KiB │   +2.2 KiB │   5.3 KiB │   +5.3 KiB │ + res/Ls.xml                                                                            
   7.3 KiB │     -2 KiB │   7.2 KiB │     -2 KiB │ ∆ lib/x86_64/libdatastore_shared_counter.so                                             
   6.1 KiB │   -1.8 KiB │     6 KiB │   -1.8 KiB │ ∆ lib/x86/libdatastore_shared_counter.so                                                
           │   -1.7 KiB │           │   -1.6 KiB │ - res/us.9.png                                                                          
           │   -1.6 KiB │           │   -1.5 KiB │ - res/zw.9.png                                                                          
           │   -1.5 KiB │           │   -1.4 KiB │ - res/_p.png                                                                            
   1.5 KiB │   +1.5 KiB │   3.1 KiB │   +3.1 KiB │ + res/VV.xml                                                                            
           │   -1.3 KiB │           │   -1.2 KiB │ - res/I3.9.png                                                                          
           │   -1.2 KiB │           │   -1.1 KiB │ - res/w2.9.png                                                                          
           │   -1.2 KiB │           │   -1.1 KiB │ - res/ZL.9.png                                                                          
           │   -1.1 KiB │           │     -1 KiB │ - res/5J.9.png                                                                          
   1.1 KiB │   +1.1 KiB │   5.6 KiB │   +5.6 KiB │ + res/Dk.xml                                                                            
           │   -1.1 KiB │           │     -982 B │ - res/-p.png                                                                            
           │     -1 KiB │           │     -960 B │ - res/tr.9.png                                                                          
           │   -1,005 B │           │     -909 B │ - res/pu.png                                                                            
           │     -997 B │           │     -897 B │ - res/BQ.9.png                                                                          
           │     -908 B │           │     -808 B │ - res/hP.9.png                                                                          
           │     -904 B │           │     -808 B │ - res/iW.png                                                                            
           │     -882 B │           │   -2.4 KiB │ - res/6f.xml                                                                            
           │     -876 B │           │     -776 B │ - res/Qd.9.png                                                                          
           │     -847 B │           │   -1.7 KiB │ - META-INF/app_release.kotlin_module                                                    
     831 B │     +831 B │   1.7 KiB │   +1.7 KiB │ + META-INF/app.kotlin_module                                                            
           │     -823 B │           │     -727 B │ - res/vo.png                                                                            
           │     -79
...✂

DEX

STRINGS:

   old   │ new   │ diff                
  ───────┼───────┼─────────────────────
   35610 │ 34047 │ -1563 (+7273 -8836) 
  
  +