delete back and frontend

add schafkopf os add build firmware action
2025-12-11 09:59:33 +01:00 · 2025-10-10 21:51:17 +02:00
parent 0a376487df
commit 7493368043
51 changed files with 220 additions and 13993 deletions
--- a/.github/workflows/BuildAndPushContainer.yml
+++ b/.github/workflows/BuildAndPushContainer.yml
@@ -1,66 +0,0 @@
-name: Build and Push Docker Image
-
-on:
-  workflow_dispatch:
-  push:
-    branches:
-      - main
-
-env:
-  REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}/app
-
-jobs:
-  build-and-push:
-    runs-on: [self-hosted]
-    permissions:
-      contents: read
-      packages: write
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Set up Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Log in to GitHub Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Extract metadata (tags, labels)
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-          tags: |
-            type=raw,value=latest,enable={{is_default_branch}}
-            type=sha,format=short
-            type=ref,event=branch
-
-      - name: Build and push Docker image (multi-arch)
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          file: ./Dockerfile
-          push: true
-          platforms: linux/amd64,linux/arm64
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          build-args: |
-            NODE_VERSION=20-bookworm-slim
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-
-      - name: Notify updater (GET, bearer)
-        if: ${{ success() && github.ref == 'refs/heads/main' }}
-        env:
-          WEBHOOK_TOKEN: ${{ secrets.WEBHOOK_TOKEN }}
-        run: |
-          curl -fsS --retry 5 -H "Authorization: Bearer ${WEBHOOK_TOKEN}" http://10.0.3.185:8080/v1/update
--- a/.github/workflows/build-firmware.yml
+++ b/.github/workflows/build-firmware.yml
@@ -0,0 +1,100 @@
+name: Build Firmware
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+
+    env:
+      BRANCH_RAW: ${{ github.ref_name }}
+
+    defaults:
+      run:
+        working-directory: ./pico
+
+    steps:
+
+      - uses: actions/checkout@v5
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.platformio/.cache
+          key: ${{ runner.os }}-pio
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
+
+      - name: Build PlatformIO Project
+        run: pio run
+
+      - name: Compute branch slug & tag
+        id: meta
+        run: |
+          set -euo pipefail
+          slug="$BRANCH_RAW"
+          # Replace anything not [A-Za-z0-9._-] with '-'
+          slug="${slug//[^A-Za-z0-9._-]/-}"
+          # Trim to 60 chars (tags can be long, but keep it tidy)
+          slug="${slug:0:60}"
+          # Avoid trailing dots or dashes
+          slug="${slug%-}"
+          slug="${slug%.}"
+          echo "slug=$slug" >> "$GITHUB_OUTPUT"
+          echo "tag=nightly-$slug" >> "$GITHUB_OUTPUT"
+
+      - name: Ensure rolling prerelease exists (create if missing)
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -euo pipefail
+          TAG="${{ steps.meta.outputs.tag }}"
+          if gh release view "$TAG" >/dev/null 2>&1; then
+            echo "Release $TAG exists — make sure tag points to this commit"
+            git config user.email "actions@github.com"
+            git config user.name "GitHub Actions"
+            git fetch --tags --force
+            git tag -f "$TAG" "$GITHUB_SHA"
+            git push --force origin "refs/tags/$TAG"
+            # Make sure it remains a prerelease
+            gh release edit "$TAG" --prerelease --title "Nightly ($BRANCH_RAW)"
+          else
+            gh release create "$TAG" \
+              --title "Nightly ($BRANCH_RAW)" \
+              --notes "Latest successful build of branch: $BRANCH_RAW" \
+              --prerelease
+          fi
+
+      - name: Attach/overwrite assets
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -euo pipefail
+          TAG="${{ steps.meta.outputs.tag }}"
+
+          # Optional: write a tiny manifest for fast comparisons on the device
+          mkdir -p .nightly
+          cat > .nightly/manifest.json <<EOF
+          {
+            "branch": "${BRANCH_RAW}",
+            "tag": "${TAG}",
+            "commit": "${GITHUB_SHA}",
+            "built_at": "$(date -u +%Y-%m-%dT%H:%M:%SZ)"
+          }
+          EOF
+
+          # Upload and overwrite ( --clobber ) to keep filenames stable
+          gh release upload "$TAG" \
+            .pio/build/pico/firmware.uf2 \
+            .nightly/manifest.json \
+            --clobber
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -1,56 +0,0 @@
-# compiled output
-/dist
-/node_modules
-/build
-
-# Logs
-logs
-*.log
-npm-debug.log*
-pnpm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-lerna-debug.log*
-
-# OS
-.DS_Store
-
-# Tests
-/coverage
-/.nyc_output
-
-# IDEs and editors
-/.idea
-.project
-.classpath
-.c9/
-*.launch
-.settings/
-*.sublime-workspace
-
-# IDE - VSCode
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-
-# dotenv environment variable files
-.env
-.env.development.local
-.env.test.local
-.env.production.local
-.env.local
-
-# temp directory
-.temp
-.tmp
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Diagnostic reports (https://nodejs.org/api/report.html)
-report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
--- a/backend/.prettierrc
+++ b/backend/.prettierrc
@@ -1,4 +0,0 @@
-{
-  "singleQuote": true,
-  "trailingComma": "all"
-}
--- a/backend/README.md
+++ b/backend/README.md
@@ -1,98 +0,0 @@
-<p align="center">
-  <a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo-small.svg" width="120" alt="Nest Logo" /></a>
-</p>
-
-[circleci-image]: https://img.shields.io/circleci/build/github/nestjs/nest/master?token=abc123def456
-[circleci-url]: https://circleci.com/gh/nestjs/nest
-
-  <p align="center">A progressive <a href="http://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
-    <p align="center">
-<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
-<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/l/@nestjs/core.svg" alt="Package License" /></a>
-<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/dm/@nestjs/common.svg" alt="NPM Downloads" /></a>
-<a href="https://circleci.com/gh/nestjs/nest" target="_blank"><img src="https://img.shields.io/circleci/build/github/nestjs/nest/master" alt="CircleCI" /></a>
-<a href="https://discord.gg/G7Qnnhy" target="_blank"><img src="https://img.shields.io/badge/discord-online-brightgreen.svg" alt="Discord"/></a>
-<a href="https://opencollective.com/nest#backer" target="_blank"><img src="https://opencollective.com/nest/backers/badge.svg" alt="Backers on Open Collective" /></a>
-<a href="https://opencollective.com/nest#sponsor" target="_blank"><img src="https://opencollective.com/nest/sponsors/badge.svg" alt="Sponsors on Open Collective" /></a>
-  <a href="https://paypal.me/kamilmysliwiec" target="_blank"><img src="https://img.shields.io/badge/Donate-PayPal-ff3f59.svg" alt="Donate us"/></a>
-    <a href="https://opencollective.com/nest#sponsor"  target="_blank"><img src="https://img.shields.io/badge/Support%20us-Open%20Collective-41B883.svg" alt="Support us"></a>
-  <a href="https://twitter.com/nestframework" target="_blank"><img src="https://img.shields.io/twitter/follow/nestframework.svg?style=social&label=Follow" alt="Follow us on Twitter"></a>
-</p>
-  <!--[![Backers on Open Collective](https://opencollective.com/nest/backers/badge.svg)](https://opencollective.com/nest#backer)
-  [![Sponsors on Open Collective](https://opencollective.com/nest/sponsors/badge.svg)](https://opencollective.com/nest#sponsor)-->
-
-## Description
-
-[Nest](https://github.com/nestjs/nest) framework TypeScript starter repository.
-
-## Project setup
-
-```bash
-$ npm install
-```
-
-## Compile and run the project
-
-```bash
-# development
-$ npm run start
-
-# watch mode
-$ npm run start:dev
-
-# production mode
-$ npm run start:prod
-```
-
-## Run tests
-
-```bash
-# unit tests
-$ npm run test
-
-# e2e tests
-$ npm run test:e2e
-
-# test coverage
-$ npm run test:cov
-```
-
-## Deployment
-
-When you're ready to deploy your NestJS application to production, there are some key steps you can take to ensure it runs as efficiently as possible. Check out the [deployment documentation](https://docs.nestjs.com/deployment) for more information.
-
-If you are looking for a cloud-based platform to deploy your NestJS application, check out [Mau](https://mau.nestjs.com), our official platform for deploying NestJS applications on AWS. Mau makes deployment straightforward and fast, requiring just a few simple steps:
-
-```bash
-$ npm install -g @nestjs/mau
-$ mau deploy
-```
-
-With Mau, you can deploy your application in just a few clicks, allowing you to focus on building features rather than managing infrastructure.
-
-## Resources
-
-Check out a few resources that may come in handy when working with NestJS:
-
- Visit the [NestJS Documentation](https://docs.nestjs.com) to learn more about the framework.
- For questions and support, please visit our [Discord channel](https://discord.gg/G7Qnnhy).
- To dive deeper and get more hands-on experience, check out our official video [courses](https://courses.nestjs.com/).
- Deploy your application to AWS with the help of [NestJS Mau](https://mau.nestjs.com) in just a few clicks.
- Visualize your application graph and interact with the NestJS application in real-time using [NestJS Devtools](https://devtools.nestjs.com).
- Need help with your project (part-time to full-time)? Check out our official [enterprise support](https://enterprise.nestjs.com).
- To stay in the loop and get updates, follow us on [X](https://x.com/nestframework) and [LinkedIn](https://linkedin.com/company/nestjs).
- Looking for a job, or have a job to offer? Check out our official [Jobs board](https://jobs.nestjs.com).
-
-## Support
-
-Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
-
-## Stay in touch
-
- Author - [Kamil Myśliwiec](https://twitter.com/kammysliwiec)
- Website - [https://nestjs.com](https://nestjs.com/)
- Twitter - [@nestframework](https://twitter.com/nestframework)
-
-## License
-
-Nest is [MIT licensed](https://github.com/nestjs/nest/blob/master/LICENSE).
--- a/backend/eslint.config.mjs
+++ b/backend/eslint.config.mjs
@@ -1,34 +0,0 @@
-// @ts-check
-import eslint from '@eslint/js';
-import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
-import globals from 'globals';
-import tseslint from 'typescript-eslint';
-
-export default tseslint.config(
-  {
-    ignores: ['eslint.config.mjs'],
-  },
-  eslint.configs.recommended,
-  ...tseslint.configs.recommendedTypeChecked,
-  eslintPluginPrettierRecommended,
-  {
-    languageOptions: {
-      globals: {
-        ...globals.node,
-        ...globals.jest,
-      },
-      sourceType: 'commonjs',
-      parserOptions: {
-        projectService: true,
-        tsconfigRootDir: import.meta.dirname,
-      },
-    },
-  },
-  {
-    rules: {
-      '@typescript-eslint/no-explicit-any': 'off',
-      '@typescript-eslint/no-floating-promises': 'warn',
-      '@typescript-eslint/no-unsafe-argument': 'warn'
-    },
-  },
-);
--- a/backend/nest-cli.json
+++ b/backend/nest-cli.json
@@ -1,8 +0,0 @@
-{
-  "$schema": "https://json.schemastore.org/nest-cli",
-  "collection": "@nestjs/schematics",
-  "sourceRoot": "src",
-  "compilerOptions": {
-    "deleteOutDir": true
-  }
-}
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,73 +0,0 @@
-{
-  "name": "backend",
-  "version": "0.0.1",
-  "description": "",
-  "author": "",
-  "private": true,
-  "license": "UNLICENSED",
-  "scripts": {
-    "build": "nest build",
-    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
-    "start": "nest start",
-    "start:dev": "nest start --watch",
-    "start:debug": "nest start --debug --watch",
-    "start:prod": "node dist/main",
-    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
-    "test": "jest",
-    "test:watch": "jest --watch",
-    "test:cov": "jest --coverage",
-    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json"
-  },
-  "dependencies": {
-    "@nestjs/common": "^11.0.1",
-    "@nestjs/core": "^11.0.1",
-    "@nestjs/platform-express": "^11.0.1",
-  "reflect-metadata": "^0.2.2",
-  "serialport": "^10.5.0",
-  "@serialport/parser-readline": "^2.0.0",
-    "rxjs": "^7.8.1"
-  },
-  "devDependencies": {
-    "@eslint/eslintrc": "^3.2.0",
-    "@eslint/js": "^9.18.0",
-    "@nestjs/cli": "^11.0.0",
-    "@nestjs/schematics": "^11.0.0",
-    "@nestjs/testing": "^11.0.1",
-    "@types/express": "^5.0.0",
-    "@types/jest": "^30.0.0",
-    "@types/node": "^22.10.7",
-    "@types/supertest": "^6.0.2",
-    "eslint": "^9.18.0",
-    "eslint-config-prettier": "^10.0.1",
-    "eslint-plugin-prettier": "^5.2.2",
-    "globals": "^16.0.0",
-    "jest": "^30.0.0",
-    "prettier": "^3.4.2",
-    "source-map-support": "^0.5.21",
-    "supertest": "^7.0.0",
-    "ts-jest": "^29.2.5",
-    "ts-loader": "^9.5.2",
-    "ts-node": "^10.9.2",
-    "tsconfig-paths": "^4.2.0",
-    "typescript": "^5.7.3",
-    "typescript-eslint": "^8.20.0"
-  },
-  "jest": {
-    "moduleFileExtensions": [
-      "js",
-      "json",
-      "ts"
-    ],
-    "rootDir": "src",
-    "testRegex": ".*\\.spec\\.ts$",
-    "transform": {
-      "^.+\\.(t|j)s$": "ts-jest"
-    },
-    "collectCoverageFrom": [
-      "**/*.(t|j)s"
-    ],
-    "coverageDirectory": "../coverage",
-    "testEnvironment": "node"
-  }
-}
--- a/backend/src/app.controller.spec.ts
+++ b/backend/src/app.controller.spec.ts
@@ -1,22 +0,0 @@
-import { Test, TestingModule } from '@nestjs/testing';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
-
-describe('AppController', () => {
-  let appController: AppController;
-
-  beforeEach(async () => {
-    const app: TestingModule = await Test.createTestingModule({
-      controllers: [AppController],
-      providers: [AppService],
-    }).compile();
-
-    appController = app.get<AppController>(AppController);
-  });
-
-  describe('root', () => {
-    it('should return "Hello World!"', () => {
-      expect(appController.getHello()).toBe('Hello World!');
-    });
-  });
-});
--- a/backend/src/app.controller.ts
+++ b/backend/src/app.controller.ts
@@ -1,12 +0,0 @@
-import { Controller, Get } from '@nestjs/common';
-import { AppService } from './app.service';
-
-@Controller()
-export class AppController {
-  constructor(private readonly appService: AppService) {}
-
-  @Get()
-  getHello(): string {
-    return this.appService.getHello();
-  }
-}
--- a/backend/src/app.module.ts
+++ b/backend/src/app.module.ts
@@ -1,11 +0,0 @@
-import { Module } from '@nestjs/common';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
-import { SerialModule } from './serial/serial.module';
-
-@Module({
-  imports: [SerialModule],
-  controllers: [AppController],
-  providers: [AppService],
-})
-export class AppModule {}
--- a/backend/src/app.service.ts
+++ b/backend/src/app.service.ts
@@ -1,8 +0,0 @@
-import { Injectable } from '@nestjs/common';
-
-@Injectable()
-export class AppService {
-  getHello(): string {
-    return 'Hello World!';
-  }
-}
--- a/backend/src/main.ts
+++ b/backend/src/main.ts
@@ -1,29 +0,0 @@
-import { NestFactory } from '@nestjs/core';
-import { AppModule } from './app.module';
-import { NestExpressApplication } from '@nestjs/platform-express';
-import { join } from 'path';
-
-async function bootstrap() {
-  const app = await NestFactory.create<NestExpressApplication>(AppModule, {
-    bufferLogs: true,
-  });
-
-  // Serve static frontend (built assets copied to /app/public in container)
-  const publicDir = join(process.cwd(), 'public');
-  app.useStaticAssets(publicDir);
-
-  // Basic health endpoint
-  app.getHttpAdapter().get('/healthz', (_req: any, res: any) => {
-    res.json({ ok: true, ts: Date.now() });
-  });
-
-  const port = Number(process.env.PORT || 3000);
-  await app.listen(port);
-  // eslint-disable-next-line no-console
-  console.log(`[bootstrap] Listening on :${port}`);
-}
-bootstrap().catch((e) => {
-  // eslint-disable-next-line no-console
-  console.error('Fatal bootstrap error', e);
-  process.exit(1);
-});
--- a/backend/src/serial/serial.controller.ts
+++ b/backend/src/serial/serial.controller.ts
@@ -1,89 +0,0 @@
-import { Controller, Get, Post, Body, Res, Req } from '@nestjs/common';
-import type { Response, Request } from 'express';
-import { SerialService } from './serial.service';
-
-@Controller('serial')
-export class SerialController {
-  constructor(private readonly serial: SerialService) {}
-
-  @Get('ports')
-  async ports() {
-  console.log('[SerialController] GET /serial/ports');
-  const p = await this.serial.listPorts();
-  console.log('[SerialController] ports ->', p);
-  return p;
-  }
-
-  @Post('open')
-  async open(@Body() body: { path: string; baud?: number }) {
-    console.log('[SerialController] POST /serial/open', body);
-    try {
-      this.serial.open(body.path, body.baud ?? 115200);
-      return { ok: true };
-    } catch (e: any) {
-      console.error('[SerialController] open error', e);
-      return { ok: false, error: String(e) };
-    }
-  }
-
-  @Post('close')
-  async close() {
-  console.log('[SerialController] POST /serial/close');
-  this.serial.close();
-  return { ok: true };
-  }
-
-  @Post('send')
-  async send(@Body() body: { payload: string }) {
-    console.log('[SerialController] POST /serial/send', body.payload);
-    try {
-      this.serial.send(body.payload);
-      return { ok: true };
-    } catch (e: any) {
-      console.error('[SerialController] send error', e);
-      return { ok: false, error: String(e) };
-    }
-  }
-
-  @Get('status')
-  status() {
-    return this.serial.status();
-  }
-
-  @Get('stream')
-  stream(@Req() req: Request, @Res() res: Response) {
-    // SSE stream
-    res.set({
-      'Content-Type': 'text/event-stream',
-      'Cache-Control': 'no-cache',
-      Connection: 'keep-alive',
-    });
-    res.flushHeaders?.();
-
-    const sendEvent = (event: string, data: any) => {
-      res.write(`event: ${event}\n`);
-      res.write(`data: ${JSON.stringify(data)}\n\n`);
-    };
-
-  const offData = this.serial.on('data', (line) => sendEvent('data', line));
-  const offOpen = this.serial.on('open', () => sendEvent('open', ''));
-  const offClose = this.serial.on('close', () => sendEvent('close', ''));
-  const offErr = this.serial.on('error', (err) => sendEvent('error', String(err)));
-
-  console.log('[SerialController] SSE client connected');
-
-    // send a ping every 20s to keep connection alive
-    const ping = setInterval(() => res.write(': ping\n\n'), 20000);
-
-    req.on('close', () => {
-  console.log('[SerialController] SSE client disconnected');
-      clearInterval(ping);
-      offData();
-      offOpen();
-      offClose();
-      offErr();
-    });
-
-    return res;
-  }
-}
--- a/backend/src/serial/serial.module.ts
+++ b/backend/src/serial/serial.module.ts
@@ -1,10 +0,0 @@
-import { Module } from '@nestjs/common';
-import { SerialService } from './serial.service';
-import { SerialController } from './serial.controller';
-
-@Module({
-  providers: [SerialService],
-  controllers: [SerialController],
-  exports: [SerialService],
-})
-export class SerialModule {}
--- a/backend/src/serial/serial.service.ts
+++ b/backend/src/serial/serial.service.ts
@@ -1,206 +0,0 @@
-import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
-import { EventEmitter } from 'events';
-// serialport has ESM/CJS shape differences and limited typings; require at runtime and keep as any
-const SP: any = require('serialport');
-const ReadlineParserModule: any = require('@serialport/parser-readline');
-// normalize constructor and parser
-const SerialCtor: any = SP?.SerialPort ?? SP;
-const ParserCtor: any = ReadlineParserModule?.ReadlineParser ?? ReadlineParserModule;
-
-type PortInfo = {
-  path: string;
-  manufacturer?: string;
-  serialNumber?: string;
-  pnpId?: string;
-  locationId?: string;
-  productId?: string;
-  vendorId?: string;
-};
-
-@Injectable()
-export class SerialService implements OnModuleDestroy, OnModuleInit {
-  private emitter = new EventEmitter();
-  private port: any = null;
-  private parser: any = null;
-  private verbose = true; // internal debug; does not change emitted payload format
-
-  constructor() {
-    // Wrap emitter.emit to log every emitted event centrally
-    const origEmit = this.emitter.emit.bind(this.emitter);
-    this.emitter.emit = (event: string, ...args: any[]) => {
-      if (this.verbose) {
-        try {
-          const printable = args.map(a => typeof a === 'object' ? JSON.stringify(a) : String(a));
-          console.log('[SerialService][EVENT]', event, printable.join(' '));
-        } catch {
-          console.log('[SerialService][EVENT]', event, args.length, 'arg(s)');
-        }
-      }
-      return origEmit(event, ...args);
-    };
-  }
-
-  async listPorts(): Promise<PortInfo[]> {
-  console.log('[SerialService] listPorts()');
-  let ports: any[] = [];
-    try {
-      if (typeof SP.list === 'function') {
-        ports = await SP.list();
-      } else {
-        // try the separate list package
-        try {
-          const listMod: any = require('@serialport/list');
-          if (typeof listMod.list === 'function') ports = await listMod.list();
-          else if (typeof listMod === 'function') ports = await listMod();
-        } catch (e) {
-          // fallback: empty list
-          ports = [];
-        }
-      }
-    } catch (e) {
-      console.error('[SerialService] listPorts error', e);
-      ports = [];
-    }
-    console.log('[SerialService] listPorts ->', ports);
-    return ports.map((p: any) => ({
-      path: p.path || p.comName,
-      manufacturer: p.manufacturer,
-      serialNumber: p.serialNumber,
-      pnpId: p.pnpId,
-      locationId: p.locationId,
-      productId: p.productId,
-      vendorId: p.vendorId,
-    }));
-  }
-
-  open(path: string, baudRate = 115200) {
-    this.close();
-    console.log('[SerialService] opening port', path, 'baud', baudRate);
-    this.port = new SerialCtor({ path, baudRate, autoOpen: false } as any);
-    this.parser = this.port.pipe(new ParserCtor({ delimiter: '\n' }));
-
-    this.port.on('open', () => {
-      console.log('[SerialService] port open', path);
-      this.emitter.emit('open');
-    });
-    this.port.on('error', (err: any) => {
-      console.error('[SerialService] port error', err);
-      this.emitter.emit('error', err?.message ?? String(err));
-    });
-  this.port.on('close', () => { this.emitter.emit('close'); });
-    this.parser.on('data', (line: string) => {
-      const clean = line.replace(/[\r\n]+$/, '');
-      if (this.verbose) console.log('[SerialService] RX:', clean);
-      this.emitter.emit('data', clean);
-    });
-
-    // open the port
-    try {
-      this.port.open((err: any) => {
-        if (err) {
-          console.error('[SerialService] open callback error', err);
-          this.emitter.emit('error', err?.message ?? String(err));
-        } else {
-          console.log('[SerialService] open callback success');
-        }
-      });
-    } catch (e: any) {
-      console.error('[SerialService] open exception', e);
-      this.emitter.emit('error', e?.message ?? String(e));
-    }
-  }
-
-  close() {
-    if (this.parser) {
-      this.parser.removeAllListeners();
-      this.parser = null;
-    }
-    if (this.port) {
-      try {
-  console.log('[SerialService] closing port', this.port?.path ?? '(unknown)');
-  this.port.close();
-      } catch (e) {
-  console.error('[SerialService] close error', e);
-      }
-      this.port = null;
-    }
-    this.emitter.emit('close');
-  }
-
-  send(line: string) {
-    if (!this.port || !(this.port.writable || this.port.isOpen)) {
-      console.warn('[SerialService] send called but port not open');
-      throw new Error('Port not open');
-    }
-    // write and flush
-    console.log('[SerialService] TX:', line);
-    this.port.write(line + '\n', (err: any) => {
-      if (err) console.error('[SerialService] write error', err);
-      else console.log('[SerialService] write success');
-    });
-  }
-
-  status() {
-    const s = {
-      open: !!(this.port && (this.port.isOpen || this.port.writable)),
-      path: this.port?.path ?? null,
-    };
-    console.log('[SerialService] status ->', s);
-    return s;
-  }
-
-  on(event: 'data' | 'open' | 'close' | 'error', cb: (...args: any[]) => void) {
-    this.emitter.on(event, cb);
-    return () => this.emitter.off(event, cb);
-  }
-  // Allow subscription to extended events (disconnect, drain, etc.)
-  onAny(event: string, cb: (...args: any[]) => void) {
-    this.emitter.on(event, cb);
-    return () => this.emitter.off(event, cb);
-  }
-
-  onModuleDestroy() {
-    this.close();
-  }
-
-  async onModuleInit() {
-    // Priority: explicit env vars > auto-detect
-    const explicit = process.env.SERIAL_PORT || process.env.PICO_SERIAL_PORT;
-    const baud = Number(process.env.SERIAL_BAUD || process.env.PICO_BAUD || 115200);
-    if (explicit) {
-      try {
-        console.log('[SerialService] AUTO opening explicit port', explicit, 'baud=', baud);
-        this.open(explicit, baud);
-        return;
-      } catch (e: any) {
-        console.warn('[SerialService] explicit open failed', e?.message ?? e);
-      }
-    }
-
-    // Attempt auto-detect of Pico (USB first, then common UART paths)
-    try {
-      const ports = await this.listPorts();
-      // Prefer vendorId 2e8a (Pico)
-      let candidate = ports.find(p => (p.vendorId || '').toLowerCase() === '2e8a');
-      if (!candidate) {
-        const common = ['/dev/serial0', '/dev/ttyACM0', '/dev/ttyAMA0'];
-        candidate = ports.find(p => p.path && common.includes(p.path));
-      }
-      // Windows fallback: highest numbered COM port
-      if (!candidate) {
-        const winCom = ports
-          .filter(p => /^COM\d+$/i.test(p.path))
-          .sort((a, b) => Number(b.path.replace(/\D/g, '')) - Number(a.path.replace(/\D/g, '')))[0];
-        if (winCom) candidate = winCom;
-      }
-      if (candidate && candidate.path) {
-        console.log('[SerialService] AUTO opening detected port', candidate.path);
-        this.open(candidate.path, baud);
-      } else {
-        console.log('[SerialService] No serial port auto-detected (will remain idle)');
-      }
-    } catch (e: any) {
-      console.warn('[SerialService] auto-detect failed', e?.message ?? e);
-    }
-  }
-}
--- a/backend/test/app.e2e-spec.ts
+++ b/backend/test/app.e2e-spec.ts
@@ -1,25 +0,0 @@
-import { Test, TestingModule } from '@nestjs/testing';
-import { INestApplication } from '@nestjs/common';
-import * as request from 'supertest';
-import { App } from 'supertest/types';
-import { AppModule } from './../src/app.module';
-
-describe('AppController (e2e)', () => {
-  let app: INestApplication<App>;
-
-  beforeEach(async () => {
-    const moduleFixture: TestingModule = await Test.createTestingModule({
-      imports: [AppModule],
-    }).compile();
-
-    app = moduleFixture.createNestApplication();
-    await app.init();
-  });
-
-  it('/ (GET)', () => {
-    return request(app.getHttpServer())
-      .get('/')
-      .expect(200)
-      .expect('Hello World!');
-  });
-});
--- a/backend/test/jest-e2e.json
+++ b/backend/test/jest-e2e.json
@@ -1,9 +0,0 @@
-{
-  "moduleFileExtensions": ["js", "json", "ts"],
-  "rootDir": ".",
-  "testEnvironment": "node",
-  "testRegex": ".e2e-spec.ts$",
-  "transform": {
-    "^.+\\.(t|j)s$": "ts-jest"
-  }
-}
--- a/backend/tsconfig.build.json
+++ b/backend/tsconfig.build.json
@@ -1,4 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
-}
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@@ -1,25 +0,0 @@
-{
-  "compilerOptions": {
-    "module": "nodenext",
-    "moduleResolution": "nodenext",
-    "resolvePackageJsonExports": true,
-    "esModuleInterop": true,
-    "isolatedModules": true,
-    "declaration": true,
-    "removeComments": true,
-    "emitDecoratorMetadata": true,
-    "experimentalDecorators": true,
-    "allowSyntheticDefaultImports": true,
-    "target": "ES2023",
-    "sourceMap": true,
-    "outDir": "./dist",
-    "baseUrl": "./",
-    "incremental": true,
-    "skipLibCheck": true,
-    "strictNullChecks": true,
-    "forceConsistentCasingInFileNames": true,
-    "noImplicitAny": true,
-    "strictBindCallApply": true,
-    "noFallthroughCasesInSwitch": true
-  }
-}
--- a/frontend/.dockerignore
+++ b/frontend/.dockerignore
@@ -1,10 +0,0 @@
-node_modules
-.svelte-kit
-dist
-build
-coverage
-npm-debug.log
-.DS_Store
-.git
-/.gitignore
-*.log
--- a/frontend/.gitignore
+++ b/frontend/.gitignore
@@ -1,24 +0,0 @@
-# Logs
-logs
-*.log
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-pnpm-debug.log*
-lerna-debug.log*
-
-node_modules
-dist
-dist-ssr
-*.local
-
-# Editor directories and files
-.vscode/*
-!.vscode/extensions.json
-.idea
-.DS_Store
-*.suo
-*.ntvs*
-*.njsproj
-*.sln
-*.sw?
--- a/frontend/.vscode/extensions.json
+++ b/frontend/.vscode/extensions.json
@@ -1,3 +0,0 @@
-{
-  "recommendations": ["svelte.svelte-vscode"]
-}
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -1,48 +0,0 @@
-######## Combined Frontend + Backend build (single Node runtime) ########
-# This Dockerfile now builds BOTH the Svelte frontend and the NestJS backend
-# and serves the compiled frontend through the backend (Express static).
-
-########################
-# 1) Frontend build     #
-########################
-FROM node:20-bookworm-slim AS frontend-build
-WORKDIR /frontend
-COPY frontend/package*.json ./
-RUN npm install --no-audit --no-fund
-COPY frontend/ .
-RUN npm run build
-
-########################
-# 2) Backend build      #
-########################
-FROM node:20-bookworm-slim AS backend-build
-WORKDIR /app
-COPY backend/package*.json ./
-RUN npm install --no-audit --no-fund
-COPY backend/ .
-# Copy compiled frontend into backend/public (served statically by Nest)
-COPY --from=frontend-build /frontend/dist ./public
-RUN npm run build
-
-########################
-# 3) Production image   #
-########################
-FROM node:20-bookworm-slim AS runner
-ENV NODE_ENV=production
-WORKDIR /app
-
-# Install only production deps (reuse original package.json)
-COPY backend/package*.json ./
-RUN npm install --omit=dev --no-audit --no-fund
-
-# Copy backend dist + public assets
-COPY --from=backend-build /app/dist ./dist
-COPY --from=backend-build /app/public ./public
-
-# Environment (override at runtime as needed)
-ENV PORT=3000 \
-	SERIAL_BAUD=115200
-
-EXPOSE 3000
-
-CMD ["node", "dist/main.js"]
--- a/frontend/README.md
+++ b/frontend/README.md
@@ -1,47 +0,0 @@
-# Svelte + TS + Vite
-
-This template should help get you started developing with Svelte and TypeScript in Vite.
-
-## Recommended IDE Setup
-
-[VS Code](https://code.visualstudio.com/) + [Svelte](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode).
-
-## Need an official Svelte framework?
-
-Check out [SvelteKit](https://github.com/sveltejs/kit#readme), which is also powered by Vite. Deploy anywhere with its serverless-first approach and adapt to various platforms, with out of the box support for TypeScript, SCSS, and Less, and easily-added support for mdsvex, GraphQL, PostCSS, Tailwind CSS, and more.
-
-## Technical considerations
-
-**Why use this over SvelteKit?**
-
- It brings its own routing solution which might not be preferable for some users.
- It is first and foremost a framework that just happens to use Vite under the hood, not a Vite app.
-
-This template contains as little as possible to get started with Vite + TypeScript + Svelte, while taking into account the developer experience with regards to HMR and intellisense. It demonstrates capabilities on par with the other `create-vite` templates and is a good starting point for beginners dipping their toes into a Vite + Svelte project.
-
-Should you later need the extended capabilities and extensibility provided by SvelteKit, the template has been structured similarly to SvelteKit so that it is easy to migrate.
-
-**Why `global.d.ts` instead of `compilerOptions.types` inside `jsconfig.json` or `tsconfig.json`?**
-
-Setting `compilerOptions.types` shuts out all other types not explicitly listed in the configuration. Using triple-slash references keeps the default TypeScript setting of accepting type information from the entire workspace, while also adding `svelte` and `vite/client` type information.
-
-**Why include `.vscode/extensions.json`?**
-
-Other templates indirectly recommend extensions via the README, but this file allows VS Code to prompt the user to install the recommended extension upon opening the project.
-
-**Why enable `allowJs` in the TS template?**
-
-While `allowJs: false` would indeed prevent the use of `.js` files in the project, it does not prevent the use of JavaScript syntax in `.svelte` files. In addition, it would force `checkJs: false`, bringing the worst of both worlds: not being able to guarantee the entire codebase is TypeScript, and also having worse typechecking for the existing JavaScript. In addition, there are valid use cases in which a mixed codebase may be relevant.
-
-**Why is HMR not preserving my local component state?**
-
-HMR state preservation comes with a number of gotchas! It has been disabled by default in both `svelte-hmr` and `@sveltejs/vite-plugin-svelte` due to its often surprising behavior. You can read the details [here](https://github.com/rixo/svelte-hmr#svelte-hmr).
-
-If you have state that's important to retain within a component, consider creating an external store which would not be replaced by HMR.
-
-```ts
-// store.ts
-// An extremely simple external store
-import { writable } from 'svelte/store'
-export default writable(0)
-```
--- a/frontend/docker-compose.yml
+++ b/frontend/docker-compose.yml
@@ -1,19 +0,0 @@
-services:
-  app:
-    build:
-      context: ..
-      dockerfile: Dockerfile
-    container_name: schafkop-app
-    restart: unless-stopped
-    environment:
-      - NODE_ENV=production
-      - PORT=3000
-      # Optionally set SERIAL_PORT or PICO_SERIAL_PORT for auto-open
-      # - SERIAL_PORT=/dev/serial0
-      # - SERIAL_BAUD=115200
-    ports:
-      - "80:3000"
-    # Uncomment and adjust one of the following for hardware access on a Pi:
-    # devices:
-    #   - /dev/serial0:/dev/serial0
-    #   - /dev/ttyACM0:/dev/ttyACM0
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -1,13 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-  <link rel="icon" href="/favicon.ico" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>Schafkopf Bot — Play & Train</title>
-  </head>
-  <body>
-    <div id="app"></div>
-    <script type="module" src="/src/main.ts"></script>
-  </body>
-</html>
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,24 +0,0 @@
-{
-  "name": "frontend",
-  "private": true,
-  "version": "0.0.0",
-  "type": "module",
-  "scripts": {
-    "dev": "vite",
-    "build": "vite build",
-    "preview": "vite preview",
-    "check": "svelte-check --tsconfig ./tsconfig.app.json && tsc -p tsconfig.node.json"
-  },
-  "devDependencies": {
-    "@sveltejs/vite-plugin-svelte": "^6.1.1",
-    "@tsconfig/svelte": "^5.0.4",
-    "svelte": "^5.38.1",
-    "svelte-check": "^4.3.1",
-    "tailwindcss": "^4.1.12",
-    "typescript": "~5.8.3",
-    "vite": "^7.1.2"
-  },
-  "dependencies": {
-    "@tailwindcss/vite": "^4.1.12"
-  }
-}
--- a/frontend/public/vite.svg
+++ b/frontend/public/vite.svg
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
--- a/frontend/src/App.svelte
+++ b/frontend/src/App.svelte
@@ -1,229 +0,0 @@
-<script lang="ts">
-  import { onMount, onDestroy } from 'svelte';
-  import { writable } from 'svelte/store';
-  import SendBox from './SendBox.svelte';
-
-  const ports = writable<Array<any>>([]);
-  const log = writable<string[]>([]);
-  const connected = writable(false);
-  const portOpen = writable(false);
-  let es: EventSource | null = null;
-
-  function addLog(line: string) {
-  // keep a fairly large history and prefix with an ISO timestamp
-  log.update((l) => [new Date().toISOString() + '  ' + line, ...l].slice(0, 2000));
-  }
-
-  async function list() {
-  console.log('[serial] list() called');
-    const res = await fetch('/serial/ports');
-    const data = await res.json();
-  console.log('[serial] list() ->', data);
-    ports.set(data);
-  }
-
-  async function openPort(path: string) {
-  console.log('[serial] openPort()', path);
-  const res = await fetch('/serial/open', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ path }) });
-  const j = await res.json().catch(() => null);
-  console.log('[serial] openPort result', j);
-  // log result and refresh status
-  if (j?.ok) addLog('PORT: open requested ' + path);
-  else addLog('PORT: open request failed - ' + (j?.error ?? 'unknown'));
-  setTimeout(getStatus, 300);
-  }
-
-  async function closePort() {
-  console.log('[serial] closePort()');
-  const res = await fetch('/serial/close', { method: 'POST' });
-  const j = await res.json().catch(() => null);
-  console.log('[serial] closePort result', j);
-  addLog('PORT: close requested');
-  }
-
-  async function sendLine(txt: string) {
-  console.log('[serial] sendLine()', txt);
-  const res = await fetch('/serial/send', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ payload: txt }) });
-  const j = await res.json().catch(() => null);
-  console.log('[serial] sendLine result', j);
-  if (!j?.ok) addLog('TX error: ' + (j?.error ?? 'unknown'));
-  }
-
-  async function getStatus() {
-    console.log('[serial] getStatus()');
-    try {
-      const res = await fetch('/serial/status');
-      const j = await res.json();
-      console.log('[serial] getStatus ->', j);
-      portOpen.set(!!j.open);
-    } catch (e) {
-      console.warn('[serial] getStatus failed', e);
-      portOpen.set(false);
-    }
-  }
-
-  function startStream() {
-    if (es) return;
-    console.log('[serial] startStream()');
-    es = new EventSource('/serial/stream');
-    // connection lifecycle events - also log them so the serial box shows open/close/errors
-    es.addEventListener('open', () => { console.log('[serial][SSE] open'); connected.set(true); addLog('[SSE] connected'); });
-    es.addEventListener('close', () => { console.log('[serial][SSE] close'); connected.set(false); addLog('[SSE] disconnected'); });
-    es.addEventListener('error', (e: any) => { console.warn('[serial][SSE] error', e); addLog('[SSE] error: ' + (e?.message ?? JSON.stringify(e))); });
-
-    // data events contain the actual lines emitted by the Pico; parse JSON payloads but fall back to raw
-    es.addEventListener('data', (ev: any) => {
-      console.log('[serial][SSE] data event', ev.data);
-      const raw = ev.data as string;
-      let line: string | undefined;
-      try {
-        const parsed = JSON.parse(raw);
-        if (parsed && typeof parsed === 'object' && 'line' in parsed) {
-          line = (parsed as any).line;
-        } else if (typeof parsed === 'string') {
-          line = parsed; // backend sent a plain JSON string
-        }
-      } catch {
-        // not JSON -> treat as plain text
-      }
-      if (!line) line = raw;
-      addLog('RX: ' + line);
-    });
-  }
-
-  function stopStream() {
-  console.log('[serial] stopStream()');
-  es?.close();
-  es = null;
-  connected.set(false);
-  }
-
-  let statusInterval: any;
-  // quick test command defaults
-  let stepVal: string = '4096';
-  let dirVal: string = '1';
-  let speedVal: string = '3000';
-  onMount(() => {
-    list();
-    startStream();
-    statusInterval = setInterval(getStatus, 1000);
-    getStatus();
-  });
-  onDestroy(() => {
-    stopStream();
-    clearInterval(statusInterval);
-  });
-
-  function sendStepCmd() {
-    const steps = Number(stepVal);
-    const dir = Number(dirVal) === 1 ? 1 : 0;
-    if (!Number.isFinite(steps) || steps <= 0) {
-      addLog('TX error: invalid STEP value: ' + stepVal);
-      return;
-    }
-    const line = `STEP ${steps} ${dir}`;
-    sendLine(line);
-    addLog('TX: ' + line);
-  }
-
-  function sendSpeedCmd() {
-    const d = Number(speedVal);
-    if (!Number.isFinite(d) || d <= 0) {
-      addLog('TX error: invalid SPEED value: ' + speedVal);
-      return;
-    }
-    const line = `SPEED ${d}`;
-    sendLine(line);
-    addLog('TX: ' + line);
-  }
-</script>
-
-<main class="min-h-screen bg-gradient-to-b from-bg to-surface text-gray-100 p-8">
-    <h1 class="text-3xl font-bold underline">
-    Hello world!
-  </h1>
-  <div class="container mx-auto">
-    <header class="flex items-center justify-between mb-6">
-      <div>
-        <h1 class="text-2xl font-semibold">Raspberry Pico</h1>
-        <p class="text-sm text-gray-400">Serial monitor & command tester</p>
-      </div>
-      <div class="flex items-center gap-3">
-        <span class="text-sm text-gray-300">SSE: {$connected ? 'connected' : 'disconnected'}</span>
-        <button class="px-3 py-1 bg-primary text-white rounded-md text-sm" on:click={startStream}>Start</button>
-        <button class="px-3 py-1 bg-gray-700 text-white rounded-md text-sm" on:click={stopStream}>Stop</button>
-      </div>
-    </header>
-
-    <div class="grid grid-cols-12 gap-6">
-      <aside class="col-span-4 bg-gray-900/60 p-4 rounded-lg border border-gray-800">
-        <section class="mb-4">
-          <h3 class="text-sm text-gray-300 font-medium">Available ports</h3>
-          <div class="flex items-center gap-2 mt-2">
-            <button class="px-2 py-1 text-sm bg-gray-700 rounded" on:click={list}>Refresh</button>
-            <button class="px-2 py-1 text-sm bg-red-600 rounded" on:click={closePort}>Close port</button>
-          </div>
-          <ul class="mt-3 space-y-2">
-            {#each $ports as p}
-              <li class="flex items-center justify-between bg-gray-800/40 p-2 rounded">
-                <code class="text-xs text-gray-200">{p.path}</code>
-                <button class="px-2 py-1 text-sm bg-primary rounded" on:click={() => openPort(p.path)}>Open</button>
-              </li>
-            {/each}
-          </ul>
-        </section>
-
-        <section class="mb-4">
-          <h3 class="text-sm text-gray-300 font-medium">Send</h3>
-          <div class="mt-2 flex items-center gap-2">
-            <div class="text-xs text-gray-300">Port: <span class="font-medium">{$portOpen ? 'open' : 'closed'}</span></div>
-          </div>
-          <div class="mt-2">
-            <SendBox disabled={!$portOpen} on:send={(e) => { sendLine(e.detail); addLog('TX: ' + e.detail); }} />
-          </div>
-        </section>
-
-        <section>
-          <h3 class="text-sm text-gray-300 font-medium">Quick commands</h3>
-          <div class="mt-2 space-y-2">
-            <div class="flex gap-2 items-center">
-              <input class="w-28 p-2 rounded bg-gray-800 text-sm" type="number" bind:value={stepVal} min="1" />
-              <select class="p-2 rounded bg-gray-800 text-sm" bind:value={dirVal}>
-                <option value="1">1 (forward)</option>
-                <option value="0">0 (reverse)</option>
-              </select>
-              <button class="px-3 py-1 bg-primary text-white rounded" on:click={sendStepCmd} disabled={!$portOpen}>Send STEP</button>
-            </div>
-
-            <div class="flex gap-2 items-center">
-              <input class="w-28 p-2 rounded bg-gray-800 text-sm" type="number" bind:value={speedVal} min="1" />
-              <button class="px-3 py-1 bg-primary text-white rounded" on:click={sendSpeedCmd} disabled={!$portOpen}>Send SPEED</button>
-            </div>
-          </div>
-        </section>
-      </aside>
-
-      <section class="col-span-8 bg-gray-900/60 p-4 rounded-lg border border-gray-800 flex flex-col">
-        <div class="flex items-center justify-between mb-3">
-          <h3 class="text-sm text-gray-300 font-medium">Live log</h3>
-          <div class="text-xs text-gray-400">Showing last {2000} lines</div>
-        </div>
-        <div class="flex-1 overflow-auto bg-[#0b0b0b] p-3 rounded text-sm font-mono text-gray-100">
-          {#each $log as l}
-            <div class="py-0.5"><code class="text-xs">{l}</code></div>
-          {/each}
-        </div>
-      </section>
-    </div>
-  </div>
-</main>
-
-<style>
-  main { padding: 1rem; font-family: system-ui, -apple-system, 'Segoe UI', Roboto; color:#111 }
-  h1 { margin-bottom:0.5rem }
-  section { margin-top:1rem; }
-  button { margin-left:0.5rem }
-</style>
-
-
-
--- a/frontend/src/SendBox.svelte
+++ b/frontend/src/SendBox.svelte
@@ -1,18 +0,0 @@
-<script lang="ts">
-  import { createEventDispatcher } from 'svelte';
-  export let placeholder = 'Type a line to send';
-  export let disabled: boolean = false;
-  const dispatch = createEventDispatcher();
-  let txt = '';
-  function doSend() {
-    if (!txt) return;
-  console.log('[SendBox] dispatch send', txt);
-  dispatch('send', txt);
-    txt = '';
-  }
-</script>
-
-  <div class="mt-2 flex gap-2 items-center">
-    <input class="flex-1 p-2 rounded bg-gray-800 text-sm text-gray-100" bind:value={txt} placeholder={placeholder} on:keydown={(e) => e.key === 'Enter' && doSend()} disabled={disabled} />
-    <button class="px-3 py-1 bg-primary text-white rounded text-sm" on:click={doSend} disabled={disabled}>Send</button>
-  </div>
--- a/frontend/src/app.css
+++ b/frontend/src/app.css
@@ -1,44 +0,0 @@
-:root {
-  --font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
-  --bg: #0b0b0b;
-  --surface: #121212;
-  --text: #eaeaea;
-  --muted: #9aa3b2;
-  --accent: #7c6cff;
-}
-
-* { box-sizing: border-box; }
-html, body { height: 100%; }
-body {
-  margin: 0;
-  font-family: var(--font-family);
-  color: var(--text);
-  background: linear-gradient(180deg, var(--bg), var(--surface));
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-a { color: var(--accent); text-decoration: none; }
-a:hover { opacity: 0.9; }
-
-/* utility container used by App.svelte */
-.container { max-width: 1100px; margin: 0 auto; padding: 1.25rem; }
-
-/* accessible focus styles */
-:focus { outline: 3px solid rgba(124,108,255,0.18); outline-offset: 2px; }
-
-@media (prefers-color-scheme: light) {
-  :root { --bg: #fafafa; --surface:#fff; --text:#111827; --muted:#556; }
-}
-
-
-/* small helpers that complement tailwind tokens */
-.container { max-width: 1100px; margin: 0 auto; padding: 1.25rem; }
-
-:focus { outline: 3px solid rgba(124,108,255,0.18); outline-offset: 2px; }
-
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
-@import "tailwindcss";
--- a/frontend/src/assets/svelte.svg
+++ b/frontend/src/assets/svelte.svg
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="26.6" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 308"><path fill="#FF3E00" d="M239.682 40.707C211.113-.182 154.69-12.301 113.895 13.69L42.247 59.356a82.198 82.198 0 0 0-37.135 55.056a86.566 86.566 0 0 0 8.536 55.576a82.425 82.425 0 0 0-12.296 30.719a87.596 87.596 0 0 0 14.964 66.244c28.574 40.893 84.997 53.007 125.787 27.016l71.648-45.664a82.182 82.182 0 0 0 37.135-55.057a86.601 86.601 0 0 0-8.53-55.577a82.409 82.409 0 0 0 12.29-30.718a87.573 87.573 0 0 0-14.963-66.244"></path><path fill="#FFF" d="M106.889 270.841c-23.102 6.007-47.497-3.036-61.103-22.648a52.685 52.685 0 0 1-9.003-39.85a49.978 49.978 0 0 1 1.713-6.693l1.35-4.115l3.671 2.697a92.447 92.447 0 0 0 28.036 14.007l2.663.808l-.245 2.659a16.067 16.067 0 0 0 2.89 10.656a17.143 17.143 0 0 0 18.397 6.828a15.786 15.786 0 0 0 4.403-1.935l71.67-45.672a14.922 14.922 0 0 0 6.734-9.977a15.923 15.923 0 0 0-2.713-12.011a17.156 17.156 0 0 0-18.404-6.832a15.78 15.78 0 0 0-4.396 1.933l-27.35 17.434a52.298 52.298 0 0 1-14.553 6.391c-23.101 6.007-47.497-3.036-61.101-22.649a52.681 52.681 0 0 1-9.004-39.849a49.428 49.428 0 0 1 22.34-33.114l71.664-45.677a52.218 52.218 0 0 1 14.563-6.398c23.101-6.007 47.497 3.036 61.101 22.648a52.685 52.685 0 0 1 9.004 39.85a50.559 50.559 0 0 1-1.713 6.692l-1.35 4.116l-3.67-2.693a92.373 92.373 0 0 0-28.037-14.013l-2.664-.809l.246-2.658a16.099 16.099 0 0 0-2.89-10.656a17.143 17.143 0 0 0-18.398-6.828a15.786 15.786 0 0 0-4.402 1.935l-71.67 45.674a14.898 14.898 0 0 0-6.73 9.975a15.9 15.9 0 0 0 2.709 12.012a17.156 17.156 0 0 0 18.404 6.832a15.841 15.841 0 0 0 4.402-1.935l27.345-17.427a52.147 52.147 0 0 1 14.552-6.397c23.101-6.006 47.497 3.037 61.102 22.65a52.681 52.681 0 0 1 9.003 39.848a49.453 49.453 0 0 1-22.34 33.12l-71.664 45.673a52.218 52.218 0 0 1-14.563 6.398"></path></svg>
--- a/frontend/src/lib/Game.svelte
+++ b/frontend/src/lib/Game.svelte
@@ -1,96 +0,0 @@
-<script lang="ts">
-  // Simple game starter UI that posts a start command to the backend.
-  import { writable } from 'svelte/store';
-
-  type Seat = 'North' | 'East' | 'South' | 'West';
-
-  let robotSeat: Seat = 'South';
-  let difficulty: 'easy' | 'medium' | 'hard' = 'medium';
-  let includeRobot = true;
-  let isStarting = false;
-  const logs = writable<string[]>([]);
-
-  function appendLog(line: string) {
-    logs.update((ls) => {
-      ls.push(line);
-      return ls.slice(-50);
-    });
-  }
-
-  async function startGame() {
-    isStarting = true;
-    appendLog(`Requesting new game (robotSeat=${robotSeat}, difficulty=${difficulty}, includeRobot=${includeRobot})`);
-
-    try {
-      const resp = await fetch('/api/game/start', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ robotSeat, difficulty, includeRobot }),
-      });
-
-      if (!resp.ok) {
-        const text = await resp.text();
-        throw new Error(text || resp.statusText);
-      }
-
-      const data = await resp.json();
-      appendLog('Game started: ' + JSON.stringify(data));
-    } catch (err) {
-      appendLog('Error starting game: ' + String(err));
-    } finally {
-      isStarting = false;
-    }
-  }
-</script>
-
-<section class="game-starter card">
-  <h4>Start a new physical game</h4>
-  <p class="muted">The robot will join as one of the four players and physically plays cards on the table.</p>
-
-  <div class="form-row">
-    <label>Robot seat</label>
-    <select bind:value={robotSeat} aria-label="Robot seat">
-      <option value="North">North</option>
-      <option value="East">East</option>
-      <option value="South">South</option>
-      <option value="West">West</option>
-    </select>
-  </div>
-
-  <div class="form-row">
-    <label>Difficulty</label>
-    <select bind:value={difficulty} aria-label="Difficulty">
-      <option value="easy">Easy</option>
-      <option value="medium">Medium</option>
-      <option value="hard">Hard</option>
-    </select>
-  </div>
-
-  <div class="form-row-inline">
-    <label><input type="checkbox" bind:checked={includeRobot} /> Include robot in this game</label>
-  </div>
-
-  <div class="actions">
-    <button class="btn primary" on:click={startGame} disabled={isStarting}> {isStarting ? 'Starting…' : 'Start game'} </button>
-  </div>
-
-  <div class="log">
-    <h5>Activity</h5>
-    <ul>
-      {#each $logs.slice().reverse() as line}
-        <li>{line}</li>
-      {/each}
-    </ul>
-  </div>
-</section>
-
-<style>
-  .game-starter { padding: 1rem; border-radius: 10px; }
-  .muted { color: var(--muted); margin-top: 0.25rem; }
-  .form-row { display:flex; flex-direction:column; gap:0.35rem; margin-top:0.8rem; }
-  .form-row-inline { margin-top:0.8rem; }
-  select { padding:0.5rem; border-radius:8px; background:transparent; color:inherit; border:1px solid rgba(255,255,255,0.04); }
-  .actions { margin-top:1rem; }
-  .log { margin-top:1rem; max-height:160px; overflow:auto; font-size:0.9rem; color:var(--muted); }
-  .log ul { list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:0.25rem; }
-</style>
--- a/frontend/src/main.ts
+++ b/frontend/src/main.ts
@@ -1,9 +0,0 @@
-import { mount } from 'svelte'
-import './app.css'
-import App from './App.svelte'
-
-const app = mount(App, {
-  target: document.getElementById('app')!,
-})
-
-export default app
--- a/frontend/src/vite-env.d.ts
+++ b/frontend/src/vite-env.d.ts
@@ -1,2 +0,0 @@
-/// <reference types="svelte" />
-/// <reference types="vite/client" />
--- a/frontend/svelte.config.js
+++ b/frontend/svelte.config.js
@@ -1,8 +0,0 @@
-import { vitePreprocess } from '@sveltejs/vite-plugin-svelte'
-
-/** @type {import("@sveltejs/vite-plugin-svelte").SvelteConfig} */
-export default {
-  // Consult https://svelte.dev/docs#compile-time-svelte-preprocess
-  // for more information about preprocessors
-  preprocess: vitePreprocess(),
-}
--- a/frontend/tsconfig.app.json
+++ b/frontend/tsconfig.app.json
@@ -1,20 +0,0 @@
-{
-  "extends": "@tsconfig/svelte/tsconfig.json",
-  "compilerOptions": {
-    "target": "ES2022",
-    "useDefineForClassFields": true,
-    "module": "ESNext",
-    "resolveJsonModule": true,
-    /**
-     * Typecheck JS in `.svelte` and `.js` files by default.
-     * Disable checkJs if you'd like to use dynamic types in JS.
-     * Note that setting allowJs false does not prevent the use
-     * of JS in `.svelte` files.
-     */
-    "allowJs": true,
-    "checkJs": true,
-    "isolatedModules": true,
-    "moduleDetection": "force"
-  },
-  "include": ["src/**/*.ts", "src/**/*.js", "src/**/*.svelte"]
-}
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -1,7 +0,0 @@
-{
-  "files": [],
-  "references": [
-    { "path": "./tsconfig.app.json" },
-    { "path": "./tsconfig.node.json" }
-  ]
-}
--- a/frontend/tsconfig.node.json
+++ b/frontend/tsconfig.node.json
@@ -1,25 +0,0 @@
-{
-  "compilerOptions": {
-    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
-    "target": "ES2023",
-    "lib": ["ES2023"],
-    "module": "ESNext",
-    "skipLibCheck": true,
-
-    /* Bundler mode */
-    "moduleResolution": "bundler",
-    "allowImportingTsExtensions": true,
-    "verbatimModuleSyntax": true,
-    "moduleDetection": "force",
-    "noEmit": true,
-
-    /* Linting */
-    "strict": true,
-    "noUnusedLocals": true,
-    "noUnusedParameters": true,
-    "erasableSyntaxOnly": true,
-    "noFallthroughCasesInSwitch": true,
-    "noUncheckedSideEffectImports": true
-  },
-  "include": ["vite.config.ts"]
-}
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -1,21 +0,0 @@
-import { defineConfig } from 'vite'
-import { svelte } from '@sveltejs/vite-plugin-svelte'
-import tailwindcss from '@tailwindcss/vite'
-
-// https://vite.dev/config/
-export default defineConfig({
-  plugins: [
-    svelte(),
-    tailwindcss(),
-  ],
-  server: {
-    proxy: {
-      // forward serial API calls (including SSE) to backend running on :3000
-      '/serial': {
-        target: 'http://localhost:3000',
-        changeOrigin: true,
-        ws: false,
-      },
-    },
-  },
-})
--- a/schafkopf-os/.gitignore
+++ b/schafkopf-os/.gitignore
@@ -0,0 +1 @@
+target/
--- a/schafkopf-os/Cargo.lock
+++ b/schafkopf-os/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "schafkopf-os"
+version = "0.1.0"
--- a/schafkopf-os/Cargo.toml
+++ b/schafkopf-os/Cargo.toml
@@ -0,0 +1,4 @@
+[package]
+name = "schafkopf-os"
+version = "0.1.0"
+edition = "2024"
--- a/schafkopf-os/README.md
+++ b/schafkopf-os/README.md
@@ -0,0 +1,27 @@
+# schafkopf-os — Test Frontend (Axum + Askama)
+
+This crate serves a tiny test frontend using Axum + Askama and static assets.
+
+## Run
+
+```bash
+cargo run --manifest-path schafkopf-os/Cargo.toml
+```
+
+Then open:
+
+- http://127.0.0.1:3000 — server renders an Askama template
+- Click "Ping API" to call `GET /api/ping`
+
+Or test the API directly:
+
+```bash
+curl -s http://127.0.0.1:3000/api/ping | jq
+```
+
+## Structure
+
+- `src/main.rs` — Axum server with routes `/` and `/api/ping`, and static files at `/static`
+- `templates/index.html` — Askama template for the homepage
+- `static/styles.css` — Minimal styling
+- `static/app.js` — Browser script to call the ping API
--- a/schafkopf-os/src/main.rs
+++ b/schafkopf-os/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
--- a/schafkopf-os/static/app.js
+++ b/schafkopf-os/static/app.js
@@ -0,0 +1,25 @@
+const btn = document.getElementById('pingBtn');
+const versionBtn = document.getElementById('versionBtn');
+const out = document.getElementById('result');
+
+btn?.addEventListener('click', async () => {
+  out.textContent = 'Requesting /api/ping…';
+  try {
+    const res = await fetch('/api/ping');
+    const json = await res.json();
+    out.textContent = JSON.stringify(json, null, 2);
+  } catch (err) {
+    out.textContent = 'Error: ' + (err?.message || String(err));
+  }
+});
+
+versionBtn?.addEventListener('click', async () => {
+  out.textContent = 'Requesting /api/version…';
+  try {
+    const res = await fetch('/api/version');
+    const json = await res.json();
+    out.textContent = JSON.stringify(json, null, 2);
+  } catch (err) {
+    out.textContent = 'Error: ' + (err?.message || String(err));
+  }
+});
--- a/schafkopf-os/static/styles.css
+++ b/schafkopf-os/static/styles.css
@@ -0,0 +1,28 @@
+/* Minimal styles for the test frontend */
+:root {
+  color-scheme: light dark;
+  --bg: #0e1217;
+  --fg: #e9eef5;
+  --muted: #94a3b8;
+  --accent: #4f46e5;
+  --card: #111827;
+  --border: #1f2937;
+}
+
+* { box-sizing: border-box; }
+html, body { margin: 0; padding: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; }
+
+body { background: var(--bg); color: var(--fg); }
+
+.container { max-width: 800px; margin: 3rem auto; padding: 0 1rem; }
+
+h1 { font-size: 1.8rem; margin: 0 0 1rem; }
+.lead { color: var(--muted); margin: 0 0 1rem; }
+.version { color: var(--muted); font-size: 0.9rem; margin: 0 0 1.5rem; }
+
+.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1rem; }
+
+button { background: var(--accent); color: white; border: none; padding: 0.6rem 1rem; border-radius: 8px; cursor: pointer; margin-right: 0.5rem; }
+button:hover { filter: brightness(1.1); }
+
+pre { background: #0b0f14; border: 1px solid var(--border); padding: 0.75rem; border-radius: 8px; overflow: auto; }
--- a/schafkopf-os/templates/index.html
+++ b/schafkopf-os/templates/index.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>{{ title }}</title>
+  <link rel="stylesheet" href="/static/styles.css" />
+</head>
+<body>
+  <main class="container">
+    <h1>{{ title }}</h1>
+    <p class="lead">{{ message }}</p>
+    <p class="version">Version: {{ version }}</p>
+
+    <section class="card">
+      <h2>API Test</h2>
+      <button id="pingBtn">Ping API</button>
+      <button id="versionBtn">Get Version</button>
+      <pre id="result">Waiting…</pre>
+    </section>
+  </main>
+
+  <script src="/static/app.js" type="module"></script>
+</body>
+</html>
				`@@ -1 +0,0 @@`
				<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>