workbench-jupyter-with-llm app with MCP features

.github/workflows/test-pr.yaml

@@ -75,6 +75,15 @@ jobs:
                 - 'features/src/postgres-client/**'
                 - 'src/aou-common/**'
                 - 'src/nemo_jupyter/**'
+            workbench-jupyter-with-llm:
+              maximize_build_space: true
+              filters:
+                - 'features/src/workbench-tools/**'
+                - 'features/src/postgres-client/**'
+                - 'features/src/llm-context/**'
+                - 'features/src/wb-mcp-server/**'
+                - 'features/src/gemini-cli/**'
+                - 'src/jupyter-common/**'
             workbench-jupyter-parabricks:
               maximize_build_space: true
               filters:

features/src/llm-context/README.md

@@ -0,0 +1,131 @@
+# LLM Context Generator (llm-context)
+
+Generates `~/CLAUDE.md` context file for LLMs (Claude Code, Gemini CLI, etc.) with Workbench workspace information. Claude Code auto-discovers this file on startup.
+
+## Example Usage
+
+```json
+"features": {
+    "ghcr.io/verily-src/workbench-app-devcontainers/llm-context:1": {
+        "username": "jupyter",
+        "userHomeDir": "/home/jupyter"
+    }
+}
+```
+
+Or for local development:
+
+```json
+"features": {
+    "./.devcontainer/features/llm-context": {
+        "username": "jupyter",
+        "userHomeDir": "/home/jupyter"
+    }
+}
+```
+
+## Options
+
+| Options Id | Description | Type | Default Value |
+|-----|-----|-----|-----|
+| username | Username of the container user | string | root |
+| userHomeDir | Home directory of the container user | string | /root |
+
+## What It Does
+
+When installed, this feature:
+
+1. **Generates `~/CLAUDE.md`** - Claude Code auto-discovers this file on startup
+2. **Provides workspace context** - Name, ID, role, resources, cloud paths
+3. **Includes skill files** - Detailed guides (e.g., custom app creation) in `~/.claude/skills/`
+4. **Sets up aliases** - `generate-llm-context`, `refresh-context`
+
+## What's in `~/CLAUDE.md`
+
+- **Quick Rules** - When to use this file vs. MCP/CLI
+- **Current Workspace** - Name, ID, description, role, cloud platform
+- **Resource Paths** - JSON lookup for all resources (GCS, BigQuery, etc.)
+- **Data Persistence** - Warning + save commands
+- **Data Exploration** - Common BigQuery/GCS commands
+- **MCP Tools** - Available tools and CLI equivalents
+- **Skills** - Links to detailed guides
+
+## When Context Gets Generated
+
+1. **Automatically on app start** - Via `postStartCommand` (after bucket mounting completes)
+2. **Manually** - Run `generate-llm-context` or `refresh-context`
+
+**Important**: Add the context generation to your `postStartCommand` in `.devcontainer.json`:
+
+```json
+"postStartCommand": [
+  "bash",
+  "-c",
+  "./startupscript/remount-on-restart.sh jupyter /home/jupyter \"${templateOption:cloud}\" \"${templateOption:login}\" && /opt/llm-context/generate-context.sh /home/jupyter"
+]
+```
+
+**Note**: Pass the user home directory (e.g., `/home/jupyter`) as an argument because `postStartCommand` runs as root, not as the container user.
+
+This ensures context is generated AFTER authentication and workspace setup complete.
+
+## MCP Integration
+
+This feature works well alongside the `wb-mcp-server` feature:
+- **`llm-context`** provides static context (workspace info, resource paths)
+- **`wb-mcp-server`** provides dynamic tools (search, create, modify)
+
+For optimal LLM experience, use both:
+
+```json
+"features": {
+    "./.devcontainer/features/llm-context": {},
+    "./.devcontainer/features/wb-mcp-server": {}
+}
+```
+
+## Troubleshooting
+
+### Context not generating?
+
+```bash
+# Check if workspace is set
+wb workspace describe
+
+# If not authenticated:
+wb auth login --mode=APP_DEFAULT_CREDENTIALS
+wb workspace set <workspace-id>
+
+# Then generate manually:
+generate-llm-context
+```
+
+### Claude Code not seeing context?
+
+```bash
+# Check file exists
+ls -la ~/CLAUDE.md
+
+# Check it's not empty
+head ~/CLAUDE.md
+```
+
+## File Locations
+
+| File | Purpose |
+|------|---------|
+| `/opt/llm-context/generate-context.sh` | Main generation script |
+| `/opt/llm-context/run-context-generator.sh` | Auto-run wrapper |
+| `~/.claude/CLAUDE.md` | Generated context (primary) |
+| `~/CLAUDE.md` | Symlink for auto-discovery |
+| `~/.claude/skills/` | Skill files (e.g., CUSTOM_APP.md) |
+
+## Notes
+
+- This feature requires the Workbench CLI (`wb`) to be installed
+- `jq` is automatically installed if not present
+- Context is only generated if a workspace is set (`wb workspace describe` succeeds)
+
+---
+
+_Note: This feature is automatically configured to work with the `wb-mcp-server` feature if both are installed._

features/src/llm-context/devcontainer-feature.json

@@ -0,0 +1,22 @@
+{
+  "id": "llm-context",
+  "version": "1.2.0",
+  "name": "LLM Context Generator",
+  "description": "Generates ~/CLAUDE.md context file for LLMs (Claude Code, Gemini, etc.) with Workbench workspace information. Claude Code auto-discovers this file on startup.",
+  "options": {
+    "username": {
+      "type": "string",
+      "default": "root",
+      "description": "Username of the container user."
+    },
+    "userHomeDir": {
+      "type": "string",
+      "default": "/root",
+      "description": "Home directory of the container user."
+    }
+  },
+  "installsAfter": [
+    "ghcr.io/devcontainers/features/common-utils",
+    "./.devcontainer/features/workbench-tools"
+  ]
+}