Added readme safeguard (#515)

Author: Mr3zee

.github/workflows/readme.yml

@@ -0,0 +1,34 @@
+name: Verify Readme
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  verify-readme:
+    name: Run Verification
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Sources
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Check Platforms Table
+        run: ./gradlew updateDocsChangelog --info --stacktrace
+
+      - name: Check if readme is changed in a propper branch
+        run: |
+          if [[ -n "$(git status --porcelain | grep README.md)" ]]; then
+            target_branch=${{ github.base_ref }}
+            pr_branch=${{ github.head_ref }}
+            if [[ "$target_branch" == "main" && ! "$pr_branch" =~ ^release-.* ]]; then
+              echo "README.md change targeting main can only be done in release-* branches"
+              exit 1
+            fi
+          fi

CHANGELOG.md

@@ -1,5 +1,5 @@
 # 0.10.0
-> Published 1 October 2025
+> Published 7 October 2025
 
 ## Overview
 This release brings a lot of changes, work:

docs/pages/kotlinx-rpc/topics/changelog.md

@@ -3,7 +3,7 @@
 This page contains all changes throughout releases of the library.
 
 ## 0.10.0
-> Published 1 October 2025
+> Published 7 October 2025
 
 **Full Changelog**: [0.9.1...0.10.0](https://github.com/Kotlin/kotlinx-rpc/compare/0.9.1...0.10.0)