feat(augment): create augment workspace and CODEOWNERS (#2590)

* feat(augment): create augment workspace and CODEOWNERS

Creates the augment workspace skeleton with minimal configuration
and adds CODEOWNERS entry for @pkliczewski and @rrbanda to enable
self-managed code review for the augment AI assistant plugins.

The full plugin implementation will follow in a separate PR.

* fix(augment): add yarn.lock for workspace CI compatibility

The workspace needs its own yarn.lock for yarn install --immutable
and dedupe --check to work in CI.

Author: rrbanda

.github/CODEOWNERS

@@ -17,6 +17,7 @@
 
 /workspaces/adoption-insights                       @redhat-developer/rhdh-ui @rohitkrai03 @karthikjeeyar @eswaraiahsapram
 /workspaces/ai-integrations                         @redhat-developer/rhdh-ui @redhat-developer/rhdh-ai @rohitkrai03 @karthikjeeyar @lucifergene   @johnmcollier @gabemontero
+/workspaces/augment                                 @pkliczewski @rrbanda
 /workspaces/app-defaults                            @redhat-developer/rhdh-ui @rohitkrai03 @christoph-jerolimov
 /workspaces/bulk-import                             @redhat-developer/rhdh-plugins @rm3l   @redhat-developer/rhdh-ui @debsmita1 @its-mitesh-kumar
 /workspaces/extensions                              @redhat-developer/rhdh-ui @christoph-jerolimov @karthikjeeyar

workspaces/augment/.changeset/.gitkeep

@@ -0,0 +1,8 @@
+# Yarn files
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions

workspaces/augment/.gitignore

@@ -0,0 +1,12 @@
+# Augment AI Assistant Workspace
+
+This workspace contains the Augment AI assistant plugins for Backstage:
+
+- **@red-hat-developer-hub/backstage-plugin-augment** — Frontend chat interface with streaming responses, conversation history, and admin settings
+- **@red-hat-developer-hub/backstage-plugin-augment-backend** — Backend plugin providing Responses API integration with Llama Stack, MCP server proxy, RAG, and multi-agent orchestration
+- **@red-hat-developer-hub/backstage-plugin-augment-common** — Shared types, API refs, and permission definitions
+
+## Maintainers
+
+- @rrbanda
+- @pkliczewski

workspaces/augment/README.md

@@ -0,0 +1,17 @@
+{
+  "name": "@internal/augment",
+  "private": true,
+  "engines": {
+    "node": "22 || 24"
+  },
+  "scripts": {
+    "backstage-cli": "exit 0",
+    "build:api-reports:only": "exit 0",
+    "build:knip-reports": "exit 0",
+    "fix": "exit 0",
+    "postinstall": "cd ../../ && yarn install",
+    "prettier:check": "exit 0",
+    "tsc:full": "exit 0",
+    "test:all": "exit 0"
+  }
+}

workspaces/augment/package.json

@@ -0,0 +1,12 @@
+# This file is generated by running "yarn install" inside your project.
+# Manual changes might be lost - proceed with caution!
+
+__metadata:
+  version: 8
+  cacheKey: 10c0
+
+"@internal/augment@workspace:.":
+  version: 0.0.0-use.local
+  resolution: "@internal/augment@workspace:."
+  languageName: unknown
+  linkType: soft