feat: add Drupal issue picker and issue fork support

CLAUDE.md

@@ -15,10 +15,17 @@ This project provides a Coder v2+ template for DDEV-based development environmen
 
 **Note:** User-facing documentation has moved to `/docs/`. This file focuses on developer/contributor guidance.
 
+## Tool Preferences
+
+- Use `jq` (not `python3 -m json.tool`) for JSON pretty-printing and querying
+
 ## Essential Commands
 
 ### Template Management
 ```bash
+# Deploy or update the drupal-core template (no image build needed)
+make push-template-drupal-core
+
 # Deploy or update template (example: user-defined-web)
 coder templates push --directory user-defined-web user-defined-web --yes
 

README.md

@@ -118,15 +118,17 @@ coder create --template user-defined-web my-workspace
 ```
 
 ### drupal-core (Drupal Core Development)
-Fully automated Drupal core development environment.
+Fully automated Drupal core development environment, including issue fork support.
 
-- **Setup**: Automatic (Drupal core cloned and installed)
-- **Use Case**: Drupal core development, contribution, testing
+- **Setup**: Automatic (Drupal core cloned and installed, ~30s with seed cache)
+- **Use Case**: Drupal core development, contribution, patch testing
 - **Template Directory**: `drupal-core/`
+- **Issue Picker**: [start.coder.ddev.com/drupal-issue](https://start.coder.ddev.com/drupal-issue) — paste any drupal.org issue URL to launch a workspace with the issue branch pre-checked-out
 - **Includes**:
-  - Pre-cloned Drupal core main branch (shallow clone, 50 commits depth)
-  - Configured DDEV (PHP 8.5, Drupal HEAD/main config, port 80)
-  - Installed demo_umami site
+  - Pre-cloned Drupal core (main branch by default)
+  - Issue fork checkout with automatic Composer dependency resolution (Drupal 10, 11, and 12/main)
+  - Configured DDEV with automatic PHP version selection
+  - Installed demo_umami site (or standard/minimal via parameter)
   - Admin account (admin/admin)
 
 **Create workspace:**

docs/README.md

@@ -26,10 +26,12 @@ System administrators and DevOps teams managing Coder infrastructure and the DDE
 
 Developers and users creating and working with DDEV workspaces.
 
+- **[Drupal Core Quickstart](./user/quickstart.md)** - Get a Drupal core workspace running in minutes; issue fork support
 - **[Getting Started Guide](./user/getting-started.md)** - First-time setup, creating your first workspace, basic verification
 - **[Using Workspaces](./user/using-workspaces.md)** - Daily workflows, VS Code for Web, DDEV projects, Git, port forwarding
 
-**Start here:** [Getting Started Guide](./user/getting-started.md)
+**Drupal core contributors:** [Quickstart](./user/quickstart.md)
+**New to Coder:** [Getting Started Guide](./user/getting-started.md)
 
 ### For DDEV Experts