chore: Enhance CI coverage reporting and add main branch workflow (#4873)

.github/workflows/main-check.yml

@@ -0,0 +1,24 @@
+name: Main CI (Verify & Build)
+
+on:
+  push:
+    branches: [ main ]
+    paths-ignore:
+      - '**/*.md'
+      - 'docs/**'
+
+concurrency:
+  group: main-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  validate-and-build:
+    if: github.repository == 'meshtastic/Meshtastic-Android'
+    uses: ./.github/workflows/reusable-check.yml
+    with:
+      run_lint: true
+      run_unit_tests: true
+      run_instrumented_tests: true
+      api_levels: '[35]' # One API level is enough for post-merge sanity check
+      upload_artifacts: true
+    secrets: inherit

.github/workflows/reusable-check.yml

@@ -89,7 +89,7 @@ jobs:
 
       - name: Shared Unit Tests & Coverage
         if: inputs.run_unit_tests == true
-        run: ./gradlew test koverXmlReport app:koverXmlReportFdroidDebug app:koverXmlReportGoogleDebug core:api:koverXmlReportDebug core:barcode:koverXmlReportFdroidDebug core:barcode:koverXmlReportGoogleDebug mesh_service_example:koverXmlReportDebug -Pci=true --continue --scan
+        run: ./gradlew test koverXmlReport app:koverXmlReportFdroidDebug app:koverXmlReportGoogleDebug core:api:koverXmlReportDebug core:barcode:koverXmlReportFdroidDebug core:barcode:koverXmlReportGoogleDebug mesh_service_example:koverXmlReportDebug desktop:koverXmlReport -Pci=true --continue --scan
 
       - name: KMP JVM Smoke Compile
         run: ./gradlew :core:proto:compileKotlinJvm :core:common:compileKotlinJvm :core:model:compileKotlinJvm :core:repository:compileKotlinJvm :core:di:compileKotlinJvm :core:navigation:compileKotlinJvm :core:resources:compileKotlinJvm :core:datastore:compileKotlinJvm :core:database:compileKotlinJvm :core:domain:compileKotlinJvm :core:prefs:compileKotlinJvm :core:network:compileKotlinJvm :core:data:compileKotlinJvm :core:ble:compileKotlinJvm :core:nfc:compileKotlinJvm :core:service:compileKotlinJvm :core:testing:compileKotlinJvm :core:ui:compileKotlinJvm :feature:intro:compileKotlinJvm :feature:messaging:compileKotlinJvm :feature:connections:compileKotlinJvm :feature:map:compileKotlinJvm :feature:node:compileKotlinJvm :feature:settings:compileKotlinJvm :feature:firmware:compileKotlinJvm -Pci=true --continue --scan