Add Helm chart publishing via chart-releaser.

Publish kloud-csi to GitHub Pages and GitHub Releases when Chart.yaml version changes on main.

Co-authored-by: Cursor <cursoragent@cursor.com>

.cr.yaml

@@ -0,0 +1,4 @@
+owner: KubelanCloud
+git-repo: kks-csi-plugin
+pages-branch: gh-pages
+pages-index-path: index.yaml

.github/workflows/release-chart.yaml

@@ -0,0 +1,35 @@
+name: Release Chart
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - charts/**
+      - .cr.yaml
+      - .github/workflows/release-chart.yaml
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.7.0
+        with:
+          charts_dir: charts
+          config: .cr.yaml
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

README.md

@@ -56,7 +56,22 @@ Driver name: `storage.csi.kloud.team`
 
 ## Install with Helm
 
-Install the chart into each user cluster (typically `kube-system`):
+### From the published chart repository
+
+Charts are published to GitHub Pages on each release:
+
+```bash
+helm repo add kloud-csi https://kubelancloud.github.io/kks-csi-plugin
+helm repo update
+
+helm install kloud-csi kloud-csi/kloud-csi \
+  --namespace kube-system \
+  --create-namespace \
+  --set serverURL=https://csi.example.kloud.team \
+  --set accessToken="YOUR_CLUSTER_CSI_ACCESS_TOKEN"
+```
+
+### From a local checkout
 
 ```bash
 helm install kloud-csi ./charts/kloud-csi \
@@ -93,6 +108,8 @@ kubectl get storageclass kloud-csi
 
 Chart path: [`charts/kloud-csi`](charts/kloud-csi)
 
+Published releases are available at [GitHub Releases](https://github.com/KubelanCloud/kks-csi-plugin/releases) and via the Helm repository at `https://kubelancloud.github.io/kks-csi-plugin`. Bump `version` in [`Chart.yaml`](charts/kloud-csi/Chart.yaml) to publish a new chart release.
+
 ### Required values
 
 | Value | Description |