[CNSL-1935] Add automated release PR workflow

Added GitHub Actions workflow that automatically creates release PRs
when pending-deploy-* branches are merged to main. The workflow uses the
reusable workflow from cockroachdb/actions and updates all version
references across the SDK including CHANGELOG.md, go.mod, config files,
and documentation.

Co-Authored-By: roachdev-claude <roachdev-claude-bot@cockroachlabs.com>

Author: linhcrl

.github/workflows/create-release-pr.yml

@@ -0,0 +1,31 @@
+name: Create Release PR
+
+on:
+  pull_request:
+    types: [closed]
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  create-release-pr:
+    # Run on merged PRs with pending-deploy- prefix, or manual workflow_dispatch
+    if: github.event_name == 'workflow_dispatch' || (github.event.pull_request.merged && startsWith(github.event.pull_request.head.ref, 'pending-deploy-'))
+    uses: cockroachdb/actions/.github/workflows/create-release-pr.yml@v0
+    with:
+      fork_owner: FORK_OWNER #TODO(linhcrl): replace
+      fork_repo: cockroach-cloud-sdk-go
+      build_script: internal/update_version.sh
+      files_to_commit: |
+        go.mod
+        internal/spec/config.yaml
+        README.md
+        docs/README.md
+        pkg/client/configuration.go
+    secrets:
+      fork_push_token: ${{ secrets.FORK_PUSH_TOKEN }}
+      pr_create_token: ${{ secrets.GITHUB_TOKEN }}

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Automated release workflow that creates release PRs when `pending-deploy-*` branches are merged to main, updating `CHANGELOG.md`, `go.mod`, `internal/spec/config.yaml`, `README.md`, `docs/README.md`, and `pkg/client/configuration.go`
+
 ## [7.1.0] - 2026-04-14
 
 ### Added

internal/update_version.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -e
+
+# This script is called by the reusable workflow after CHANGELOG.md has been updated.
+# The VERSION environment variable is set by the reusable workflow.
+# This script should only update version numbers in files other than CHANGELOG.md.
+
+# Check if VERSION environment variable is set
+if [ -z "$VERSION" ]; then
+    echo "Error: VERSION environment variable must be set"
+    echo "This script is intended to be called by the create-release-pr workflow"
+    exit 1
+fi
+
+echo "Updating version to $VERSION in config and documentation files..."
+
+# Extract major version from VERSION (e.g., 7.0.0 -> 7)
+MAJOR_VERSION=$(echo "$VERSION" | cut -d. -f1)
+
+# Update go.mod module path to match major version
+echo "Updating go.mod..."
+sed -E "s|(github.com/cockroachdb/cockroach-cloud-sdk-go)/v[0-9]+|\1/v${MAJOR_VERSION}|" go.mod > go.mod.tmp && mv go.mod.tmp go.mod
+
+# Update internal/spec/config.yaml
+echo "Updating internal/spec/config.yaml..."
+sed "s/^packageVersion:.*/packageVersion: $VERSION/" internal/spec/config.yaml > internal/spec/config.yaml.tmp && mv internal/spec/config.yaml.tmp internal/spec/config.yaml
+
+# Update README.md
+echo "Updating README.md..."
+sed "s/^- Package version:.*/- Package version: $VERSION/" README.md > README.md.tmp && mv README.md.tmp README.md
+
+# Update docs/README.md
+echo "Updating docs/README.md..."
+sed "s/^- Package version:.*/- Package version: $VERSION/" docs/README.md > docs/README.md.tmp && mv docs/README.md.tmp docs/README.md
+
+# Update pkg/client/configuration.go UserAgent
+echo "Updating pkg/client/configuration.go..."
+sed "s/UserAgent:     \"ccloud-sdk-go\/[^\"]*\"/UserAgent:     \"ccloud-sdk-go\/$VERSION\"/" pkg/client/configuration.go > pkg/client/configuration.go.tmp && mv pkg/client/configuration.go.tmp pkg/client/configuration.go
+
+echo "Version updated to $VERSION"