chore(ci): narrow workflow path filters to per-framework subtrees

Previously every workflow triggered on `samples/**`, so a bump in one
framework rebuilt every other framework's matrix. Path filters now match
only the framework each workflow tests:

- test-android: samples/react-native/** + samples/android/**
- test-java: samples/java/**
- test-dotnet: samples/dotnet/**
- test-js: samples/{react,angular,vue,node,react-native}/**

Each workflow also re-triggers when its own file changes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ksroda-sa

.github/workflows/test-android.yml

@@ -3,15 +3,13 @@ name: Test Android Builds
 on:
   push:
     paths:
-      - "samples/**/android/**"
-      - "samples/**/package.json"
-      - "samples/**/yarn.lock"
+      - "samples/react-native/**"
+      - "samples/android/**"
       - ".github/workflows/test-android.yml"
   pull_request:
     paths:
-      - "samples/**/android/**"
-      - "samples/**/package.json"
-      - "samples/**/yarn.lock"
+      - "samples/react-native/**"
+      - "samples/android/**"
       - ".github/workflows/test-android.yml"
   schedule:
     - cron: "0 9 * * 1"

.github/workflows/test-dotnet.yml

@@ -3,10 +3,12 @@ name: Test .NET Frameworks
 on:
   push:
     paths:
-      - "samples/**"
+      - "samples/dotnet/**"
+      - ".github/workflows/test-dotnet.yml"
   pull_request:
     paths:
-      - "samples/**"
+      - "samples/dotnet/**"
+      - ".github/workflows/test-dotnet.yml"
   schedule:
     - cron: "0 8 * * 1"
   workflow_dispatch:

.github/workflows/test-java.yml

@@ -3,10 +3,12 @@ name: Test Java Frameworks
 on:
   push:
     paths:
-      - "samples/**"
+      - "samples/java/**"
+      - ".github/workflows/test-java.yml"
   pull_request:
     paths:
-      - "samples/**"
+      - "samples/java/**"
+      - ".github/workflows/test-java.yml"
   schedule:
     - cron: "0 8 * * 1"
   workflow_dispatch:

.github/workflows/test-js.yml

@@ -3,10 +3,20 @@ name: Test JS Frameworks
 on:
   push:
     paths:
-      - "samples/**"
+      - "samples/react/**"
+      - "samples/angular/**"
+      - "samples/vue/**"
+      - "samples/node/**"
+      - "samples/react-native/**"
+      - ".github/workflows/test-js.yml"
   pull_request:
     paths:
-      - "samples/**"
+      - "samples/react/**"
+      - "samples/angular/**"
+      - "samples/vue/**"
+      - "samples/node/**"
+      - "samples/react-native/**"
+      - ".github/workflows/test-js.yml"
   schedule:
     - cron: "0 8 * * 1"
   workflow_dispatch: