Add PyInstaller builds, AGPLv3 license, transport node selection, and rmap.world link

- Add pyinstaller.spec and GitHub/Forgejo CI workflows for cross-platform builds
- Add AGPLv3 license
- Move data storage to ~/.tinyweb/
- Add --version and --port CLI flags
- Add transport node selection in /style (smart regeneration preserves Reticulum config)
- Add discover more nodes link to rmap.world

.github/workflows/build.yml

@@ -0,0 +1,75 @@
+name: Build
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: windows-latest
+            artifact: TinyWeb-windows-x64.exe
+          - os: macos-latest
+            artifact: TinyWeb-macos-arm64
+          - os: ubuntu-latest
+            artifact: TinyWeb-linux-x64
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          pip install -r requirements.txt
+          pip install pyinstaller
+
+      - name: Build with PyInstaller
+        run: |
+          pyinstaller --onefile --console --name TinyWeb app.py
+
+      - name: Get artifact path
+        id: artifact
+        run: |
+          if [[ "${{ matrix.os }}" == "windows-latest" ]]; then
+            echo "path=dist/TinyWeb.exe" >> $GITHUB_OUTPUT
+          else
+            echo "path=dist/TinyWeb" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create ZIP
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.artifact }}
+          path: ${{ steps.artifact.outputs.path }}
+          if-no-files-found: error
+
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+
+    steps:
+      - name: Download all artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: artifacts/**
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}