fix(e2e): shorten Helm e2e cluster names to fit k3d 32-char limit

CI run ids combined with the openshell-helm-e2e- prefix exceeded k3d's
32-character cluster-name limit (e.g. openshell-helm-e2e-25403379605-python
is 37 chars). Shorten the workflow prefix to helm-e2e- and tighten the
local-dev suffix truncation so both paths stay under the limit.

Author: TaylorMutch

.github/workflows/branch-helm-e2e.yml

@@ -47,7 +47,7 @@ jobs:
         - /var/run/docker.sock:/var/run/docker.sock
     env:
       MISE_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      HELM_E2E_CLUSTER_NAME: openshell-helm-e2e-${{ github.run_id }}-rust
+      HELM_E2E_CLUSTER_NAME: helm-e2e-${{ github.run_id }}-rust
     steps:
       - uses: actions/checkout@v6
 
@@ -79,7 +79,7 @@ jobs:
         - /var/run/docker.sock:/var/run/docker.sock
     env:
       MISE_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      HELM_E2E_CLUSTER_NAME: openshell-helm-e2e-${{ github.run_id }}-python
+      HELM_E2E_CLUSTER_NAME: helm-e2e-${{ github.run_id }}-python
     steps:
       - uses: actions/checkout@v6
 

tasks/scripts/helm-e2e.sh

@@ -35,7 +35,7 @@ _branch_cluster_name() {
   local branch
   branch="$(git -C "${ROOT}" rev-parse --abbrev-ref HEAD 2>/dev/null || echo "unknown")"
   local suffix="${branch##*/}"
-  suffix="${suffix:0:24}"
+  suffix="${suffix:0:18}"
   echo "openshell-dev-${suffix}"
 }