ci: add CI workflow, rule files, and community health files

- Add agent-ruleset.json and generate AGENTS.md (unreal domain rules)
- Add .github/workflows/ci.yml: self-hosted runner, builds and tests via
  RuntimeAssetImportSample host project with NTFS junction linking
- Add .clang-format (UE5 coding standard, based on XroidVerse)
- Add SECURITY.md, CONTRIBUTING.md
- Add .github/FUNDING.yml for GitHub Sponsors

Author: metyatech

.clang-format

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+---
+BasedOnStyle: LLVM
+UseTab: Never
+BreakBeforeBraces: Allman
+ColumnLimit: 120
+IndentWidth: 4
+SortIncludes: "false"
+AccessModifierOffset: -4
+NamespaceIndentation: All

.github/FUNDING.yml

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+github: metyatech

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  verify:
+    runs-on: [self-hosted, windows]
+    timeout-minutes: 60
+
+    steps:
+      - name: Checkout plugin
+        uses: actions/checkout@v4
+        with:
+          path: RuntimeAssetImportPlugin
+          fetch-depth: 0
+          submodules: recursive
+
+      - name: Checkout test host project
+        uses: actions/checkout@v4
+        with:
+          repository: metyatech/RuntimeAssetImportSample
+          path: RuntimeAssetImportSample
+          fetch-depth: 0
+          submodules: recursive
+
+      - name: Link plugin into test project
+        shell: powershell
+        run: |
+          $pluginPath = Join-Path $env:GITHUB_WORKSPACE "RuntimeAssetImportPlugin"
+          $linkPath   = Join-Path $env:GITHUB_WORKSPACE "RuntimeAssetImportSample\Plugins\RuntimeAssetImport"
+          if (Test-Path $linkPath) {
+            Remove-Item -Recurse -Force $linkPath
+          }
+          New-Item -ItemType Junction -Path $linkPath -Target $pluginPath
+          Write-Host "Linked: $linkPath -> $pluginPath"
+
+      - name: Verify (build + test)
+        shell: powershell
+        working-directory: RuntimeAssetImportSample
+        run: powershell -NoProfile -ExecutionPolicy Bypass -File .\Verify.ps1 -TestFilter "RuntimeAssetImport"

AGENTS.md

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+@AGENTS.md

CLAUDE.md

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+# Contributing to RuntimeAssetImportPlugin
+
+Thank you for your interest in contributing!
+
+## How to contribute
+
+1. Fork the repository
+2. Create a feature branch from `master`
+3. Make your changes following the [UE Coding Standard](https://dev.epicgames.com/documentation/en-us/unreal-engine/epic-cplusplus-coding-standard-for-unreal-engine)
+4. Run `Verify.ps1` locally (requires UE5.4 and the RuntimeAssetImportSample project)
+5. Open a pull request
+
+## Code style
+
+This project follows the Epic C++ Coding Standard. A `.clang-format` file is provided for automatic formatting.
+
+## Running tests
+
+See [README.md](README.md) for test instructions.
+
+## Issues
+
+Please use [GitHub Issues](https://github.com/metyatech/RuntimeAssetImportPlugin/issues) for bug reports and feature requests.

CONTRIBUTING.md

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+# Security Policy
+
+## Supported Versions
+
+| Version | Supported |
+| ------- | --------- |
+| 1.0.x   | ✅        |
+
+## Reporting a Vulnerability
+
+To report a security vulnerability, please open an issue at:
+https://github.com/metyatech/RuntimeAssetImportPlugin/issues
+
+Or contact the maintainer directly via GitHub.
+
+We aim to respond within 7 days.

SECURITY.md

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+{
+  "source": "github:metyatech/agent-rules",
+  "domains": [
+    "unreal"
+  ],
+  "output": "AGENTS.md"
+}