chore: added gh workflows

Author: Khip01

.github/workflows/deploy.yml

@@ -0,0 +1,55 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+
+      - name: Install Jaspr CLI
+        run: dart pub global activate jaspr_cli
+
+      - name: Get dependencies
+        run: flutter pub get
+
+      - name: Build static site
+        run: dart run jaspr build
+
+      # Fix: copy index.html → 404.html so GitHub Pages serves the app
+      # for any direct URL (e.g. /whoami/creation refreshed in browser)
+      - name: Copy index.html to 404.html
+        run: cp build/jaspr/index.html build/jaspr/404.html
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: build/jaspr
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4