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+# AGENTS.md
+
+This document provides guidance for AI coding agents (GitHub Copilot, Claude, etc.) working in this repository.
+
+## Project Overview
+
+**harvester-ui-extension** is a [Rancher UI Extension](https://extensions.rancher.io/) that provides the user interface for [Harvester](https://harvesterhci.io) (a hyperconverged infrastructure platform) within [Rancher Dashboard](https://github.com/rancher/dashboard).
+
+- Requires Rancher **2.10.0** or later
+- Available as both a Rancher extension and a standalone UI bundle
+- Manages virtual machines, volumes, storage, networking, backups, and monitoring
+
+## Technology Stack
+
+| Layer | Technology |
+|---|---|
+| Language | TypeScript + JavaScript |
+| Framework | Vue 3 (via `@rancher/shell`) |
+| Build tool | Vue CLI Service (Webpack) |
+| Package manager | Yarn |
+| Node version | ≥ 20.0.0 (see `.nvmrc`) |
+| Linter | ESLint |
+| Commit linting | commitlint (conventional commits) |
+| Git hooks | Husky |
+
+Key dependencies: `@rancher/shell`, `@vue-flow/*` (graph visualisation), `vue-draggable-next`, `elkjs`, `yaml`.
+
+## Repository Structure
+
+```
+harvester-ui-extension/
+├── pkg/harvester/               # Main extension source
+│   ├── index.ts                 # Plugin entry point (registers routes, stores, components)
+│   ├── types.ts                 # TypeScript definitions for ~50 HCI resource types
+│   ├── routing/
+│   │   └── harvester-routing.ts # Route definitions for all pages and resources
+│   ├── config/
+│   │   ├── harvester.ts         # Core constants and configuration
+│   │   ├── harvester-cluster.js # Product/cluster configuration
+│   │   ├── settings.ts          # Settings definitions
+│   │   ├── table-headers.js     # Column definitions for list views
+│   │   └── feature-flags.js     # Feature flag definitions
+│   ├── models/                  # Kubernetes resource model classes (~40+ files)
+│   │   │                        # Naming: <group>.<domain>.<resource>.js
+│   │   └── harvesterhci.io.virtualmachine.js  # (example)
+│   ├── components/              # Reusable Vue components
+│   ├── pages/                   # Full-page list/overview components
+│   ├── detail/                  # Resource detail/view pages
+│   ├── edit/                    # Resource create/edit form pages
+│   ├── dialog/                  # Modal and dialog components
+│   ├── list/                    # List view templates
+│   ├── store/                   # Vuex store modules
+│   │   ├── harvester-common.js  # Common state
+│   │   └── harvester-store/     # Feature-specific store modules
+│   ├── utils/                   # Shared utility functions
+│   ├── validators/              # Form validation logic
+│   ├── formatters/              # UI value formatters
+│   ├── mixins/                  # Vue mixins
+│   ├── styles/                  # SCSS/CSS
+│   ├── l10n/
+│   │   └── en-us.yaml           # All UI strings (i18n)
+│   ├── package.json             # Package-level metadata
+│   ├── tsconfig.json            # TypeScript config (package level)
+│   └── vue.config.js            # Vue CLI config (package level)
+├── scripts/                     # Build and release helper scripts
+├── .github/
+│   ├── actions/
+│   │   ├── setup/               # Node/Yarn setup reusable action
+│   │   └── lint/                # Lint reusable action
+│   └── workflows/               # CI/CD pipelines
+├── .eslintrc.js                 # ESLint config (extends .eslintrc.default.js)
+├── .eslintrc.default.js         # Default ESLint rules
+├── .eslintignore                # ESLint ignore patterns
+├── commitlint.config.js         # Commit message validation rules
+├── tsconfig.json                # Root TypeScript config
+├── vue.config.js                # Root Vue CLI config
+├── babel.config.js              # Babel config
+└── package.json                 # Root package (Yarn workspaces / scripts)
+```
+
+## Development Commands
+
+### Install dependencies
+```bash
+yarn install
+```
+Husky git hooks are set up automatically during `yarn install` via the `prepare` script.
+
+### Run in development mode
+
+**Standalone mode** (recommended for UI development, hot reload at `https://localhost:8005`):
+```bash
+RANCHER_ENV=harvester API=https://<harvester-ip> yarn dev
+
+# Or define variables in a .env file, then:
+yarn dev
+```
+
+**.env file example:**
+```env
+RANCHER_ENV=harvester
+VUE_APP_SERVER_VERSION=v1.5.0
+API=https://192.168.1.123
+```
+
+**Rancher integration mode:**
+```bash
+API=https://<rancher-ip> yarn dev
+```
+
+### Build
+```bash
+yarn build          # Production build → dist/
+yarn clean          # Remove build artifacts
+yarn build-pkg      # Build as Helm package for Rancher extension
+yarn serve-pkgs     # Serve packages locally for Rancher extension development
+yarn publish-pkgs   # Publish packages
+```
+
+### Lint
+```bash
+yarn lint           # Report lint errors/warnings (0 warnings allowed — fails on any warning)
+yarn lint:fix       # Auto-fix lint issues
+```
+
+Always run `yarn lint` after making changes to `.js`, `.ts`, or `.vue` files.
+
+### Validate commit messages manually
+```bash
+yarn commitlint           # Validate the last commit
+npx commitlint --from <hash>            # From a specific commit
+npx commitlint --from <start> --to <end>  # Range
+```
+
+## Commit Message Format
+
+This project enforces [Conventional Commits](https://www.conventionalcommits.org/). Commit messages **must** follow this format:
+
+```
+<type>[optional scope]: <description>
+
+[optional body]
+
+[optional footer(s)]
+```
+
+**Rules:**
+- `type` must be one of: `feat`, `fix`, `docs`, `style`, `refactor`, `perf`, `test`, `build`, `ci`, `chore`, `revert`, `wip`, `deps`, `security`
+- `scope` (optional) must be kebab-case
+- `type` must be lower-case
+- `description` must not end with a period
+- Body and footer lines must not exceed 100 characters
+- A blank line is required between body and footer
+- Merge/revert commits are exempt
+
+**Examples:**
+```bash
+git commit -m "feat: add new virtual machine creation wizard"
+git commit -m "fix(vm): resolve memory leak in console component"
+git commit -m "docs: update installation instructions"
+git commit -m "feat!: change API endpoint structure
+
+BREAKING CHANGE: /api/v1/vms replaced with /api/v2/vms"
+```
+
+## Code Style
+
+ESLint with Vue 3 recommended rules and TypeScript support is enforced. Key rules:
+
+- **Indentation:** 2 spaces
+- **Quotes:** Single quotes (`'`), template literals allowed
+- **Semicolons:** Required
+- **Vue components:** Multi-word names required; no `v-html`
+- **Max warnings:** 0 — any ESLint warning fails the build
+
+The pre-commit Husky hook runs ESLint automatically before every commit.
+
+## Naming Conventions
+
+| Context | Convention |
+|---|---|
+| Variables / functions | camelCase |
+| Constants | UPPER_CASE |
+| Classes / Vue components | PascalCase |
+| Vue component files | `PascalCase.vue` (e.g. `HarvesterUpgrade.vue`) |
+| Model files | `<group>.<domain>.<resource>.js` (e.g. `harvesterhci.io.virtualmachine.js`) |
+| Route/URL slugs | kebab-case |
+| Commit scopes | kebab-case |
+
+## Adding / Modifying Resource Models
+
+Resource models live in `pkg/harvester/models/`. Each file exports a class that extends a Rancher shell base class and represents a Kubernetes CRD or resource type. The file name format is `<api-group>.<resource-kind>.js` (dots separate the group segments and the kind).
+
+Resource types (string constants) are defined in `pkg/harvester/types.ts` under the `HCI` object.
+
+## Localization
+
+All user-visible strings must be added to `pkg/harvester/l10n/en-us.yaml`. Use the i18n utilities from `@rancher/shell` to render them in components.
+
+## Branching Model
+
+| Branch | Purpose |
+|---|---|
+| `main` | Main development branch |
+| `release-harvester-vX.Y` | Stable release branch per version series |
+| `vX.Y-head` | Auto-generated testing branch (kept in sync with release branch) |
+
+## CI/CD
+
+Workflows are in `.github/workflows/`. Key pipelines:
+
+| Workflow | Trigger | Purpose |
+|---|---|---|
+| `run-lint.yaml` | Push/PR to `main`, `release-*` | ESLint + commitlint validation |
+| `build-extension-on-merge.yml` | Push to `main`/`release-harvester-v*` | Build and publish extension Helm charts |
+| `build-standalone-on-merge.yaml` | Push/PR merge | Build standalone UI bundle |
+| `build-extension-on-release.yml` | Release published | Create release extension artifacts |
+| `build-standalone-on-release.yaml` | Release published | Create release standalone artifacts |
+| `build-extension-catalog.yml` | Dispatch / release | Build Docker catalog image |
+| `backport-request.yaml` | PR labeled | Create backport PR |
+
+## Testing
+
+There is no automated unit/integration test suite. Validation is done by:
+
+1. Running `yarn lint` — ensures code quality.
+2. Manual testing via **standalone mode** (see Development Commands above).
+3. Manual testing via **Rancher extension** (register via Rancher UI Repositories).
+
+For testing a specific release series, use the corresponding `vX.Y-head` branch as the Rancher extension repository URL.
+
+## TypeScript Path Aliases
+
+| Alias | Resolves to |
+|---|---|
+| `~/` or `@/` | Project root |
+| `@shell/` | `@rancher/shell` modules |
+
+## License
+
+Apache License 2.0. Copyright (c) 2014–2026 SUSE, LLC.