feat(w1): maven skeleton + CI scaffold

- Parent POM: de.platesoft:plate-auth-parent with ${revision} CI-friendly versioning
- plate-auth-starter module: Spring Boot 4.1.0 starter deps (web, jpa, security, validation, jwt, flyway, envers)
- @platesoft/auth npm package skeleton: tsup bundler, conditional exports, TypeScript strict
- Gitea Actions: ci.yml (on push/PR) + release.yml (on v* tag)
- distributionManagement pointing to Gitea Package Registry (Maven + npm)
- Apache-2.0 LICENSE, README with quickstart, CHANGELOG, .editorconfig, .gitignore
- pnpm workspace with packages/auth
- Maven BUILD SUCCESS verified locally

packages/auth/package.json

@@ -0,0 +1,70 @@
+{
+  "name": "@platesoft/auth",
+  "version": "0.1.0",
+  "type": "module",
+  "description": "NextAuth v5 config factory, HMAC exchange, proxy helpers, and React hooks for plate-auth",
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "import": "./dist/index.js",
+      "require": "./dist/index.cjs",
+      "types": "./dist/index.d.ts"
+    },
+    "./config": {
+      "import": "./dist/config/index.js",
+      "types": "./dist/config/index.d.ts"
+    },
+    "./exchange": {
+      "import": "./dist/exchange/index.js",
+      "types": "./dist/exchange/index.d.ts"
+    },
+    "./proxy": {
+      "import": "./dist/proxy/index.js",
+      "types": "./dist/proxy/index.d.ts"
+    },
+    "./middleware": {
+      "import": "./dist/middleware/index.js",
+      "types": "./dist/middleware/index.d.ts"
+    },
+    "./client": {
+      "import": "./dist/client/index.js",
+      "types": "./dist/client/index.d.ts"
+    }
+  },
+  "files": [
+    "dist",
+    "README.md",
+    "LICENSE"
+  ],
+  "scripts": {
+    "build": "tsup",
+    "test": "vitest run",
+    "lint": "tsc --noEmit"
+  },
+  "peerDependencies": {
+    "next": ">=15.0.0",
+    "next-auth": ">=5.0.0-beta",
+    "react": ">=19.0.0"
+  },
+  "devDependencies": {
+    "next": "^15.3.0",
+    "next-auth": "^5.0.0-beta.30",
+    "react": "^19.0.0",
+    "tsup": "^8.4.0",
+    "typescript": "^5.7.0",
+    "vitest": "^3.1.0",
+    "@types/node": "^22.0.0",
+    "@types/react": "^19.0.0"
+  },
+  "publishConfig": {
+    "registry": "https://git.plate-software.de/api/packages/pplate/npm/"
+  },
+  "license": "Apache-2.0",
+  "repository": {
+    "type": "git",
+    "url": "https://git.plate-software.de/pplate/plate-auth.git",
+    "directory": "packages/auth"
+  }
+}