diff --git a/.claude/skills/cleanup-tags/API.md b/.claude/skills/cleanup-tags/API.md
new file mode 100644
index 0000000..db37120
--- /dev/null
+++ b/.claude/skills/cleanup-tags/API.md
@@ -0,0 +1,31 @@
+# Docker Hub API Reference
+
+## Repository
+
+- **Owner:** stellars
+- **Repository:** stellars-jupyterlab-ds
+- **Base URL:** `https://hub.docker.com/v2/repositories/stellars/stellars-jupyterlab-ds`
+
+## List Tags
+
+```bash
+curl -s "https://hub.docker.com/v2/repositories/stellars/stellars-jupyterlab-ds/tags?page_size=100" \
+  | jq -r '.results[].name'
+```
+
+## Delete Tag
+
+```bash
+curl -s -o /dev/null -w "%{http_code}" -X DELETE \
+  -H "Authorization: Bearer $TOKEN" \
+  "https://hub.docker.com/v2/repositories/stellars/stellars-jupyterlab-ds/tags/{TAG}/"
+```
+
+## Response Codes
+
+| Code | Meaning |
+|------|---------|
+| 204 | Success - tag deleted |
+| 401 | Unauthorized - token invalid |
+| 404 | Tag not found |
+| 403 | Forbidden - insufficient permissions |
diff --git a/.claude/skills/cleanup-tags/AUTH.md b/.claude/skills/cleanup-tags/AUTH.md
new file mode 100644
index 0000000..d2ef1e9
--- /dev/null
+++ b/.claude/skills/cleanup-tags/AUTH.md
@@ -0,0 +1,23 @@
+# Authentication
+
+## Docker Desktop Credential Helper
+
+Get username and PAT from Docker Desktop:
+
+```bash
+CREDS=$(echo "https://index.docker.io/v1/" | docker-credential-desktop.exe get)
+USERNAME=$(echo "$CREDS" | jq -r '.Username')
+PASSWORD=$(echo "$CREDS" | jq -r '.Secret')
+```
+
+## JWT Token
+
+Exchange credentials for Docker Hub JWT token:
+
+```bash
+TOKEN=$(curl -s -H "Content-Type: application/json" -X POST \
+  -d "{\"username\": \"$USERNAME\", \"password\": \"$PASSWORD\"}" \
+  https://hub.docker.com/v2/users/login/ | jq -r .token)
+```
+
+The token is used in the Authorization header for subsequent API calls.
diff --git a/.claude/skills/cleanup-tags/SKILL.md b/.claude/skills/cleanup-tags/SKILL.md
new file mode 100644
index 0000000..3e3c1c3
--- /dev/null
+++ b/.claude/skills/cleanup-tags/SKILL.md
@@ -0,0 +1,24 @@
+---
+description: Clean up Docker Hub tags for stellars-jupyterlab-ds
+allowed-tools: Bash, AskUserQuestion
+---
+
+# Clean Up Docker Hub Tags
+
+Manage and remove old or unwanted tags from Docker Hub for the `stellars/stellars-jupyterlab-ds` repository.
+
+## Current Tags
+
+!`curl -s "https://hub.docker.com/v2/repositories/stellars/stellars-jupyterlab-ds/tags?page_size=100" | jq -r '.results[].name' | sort -V`
+
+## Workflow
+
+1. Show the user the current tags listed above
+2. Ask which tags to delete using AskUserQuestion with options:
+   - Delete all tags below version X.Y (e.g., "Delete all 3.4.x and lower")
+   - Delete specific version range (e.g., "Delete 3.3.x only")
+   - Delete tags matching a pattern
+   - Custom selection
+3. Authenticate using Docker credential helper (see AUTH.md)
+4. Delete selected tags via Docker Hub API (see API.md)
+5. Report results showing which tags were deleted successfully
diff --git a/project.env b/project.env
index a4c4fd6..ef831d5 100644
--- a/project.env
+++ b/project.env
@@ -3,7 +3,7 @@ PROJECT_NAME="stellars-jupyterhub-ds"
 PROJECT_DESCRIPTION="Multi-user JupyterHub 4 deployment platform with data science stack, GPU auto-detection, NativeAuthenticator, and isolated per-user environments spawned via DockerSpawner"
 
 # Version
-VERSION="3.7.17_cuda-13.0.2_jh-5.4.2"
+VERSION="3.7.10_cuda-13.0.2_jh-5.4.2"
 VERSION_COMMENT="Activity Monitor: admin page with 3-state status, activity scoring, reset functionality"
 RELEASE_TAG="RELEASE_3.2.11"
 RELEASE_DATE="2025-11-09"