Auto-build conjure.exe via CI instead of committing a static binary

.github/workflows/build-windows-exe.yml

@@ -0,0 +1,48 @@
+name: Build Windows exe
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+      - name: Run self-tests
+        run: python -m unittest tests.test_conjure tests.test_wizard -v
+
+  build-windows:
+    # Only build+publish on an actual push to main (or a manual trigger) —
+    # never on a PR branch, so pull requests don't spam the release.
+    if: github.event_name != 'pull_request'
+    needs: test
+    runs-on: windows-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+      - name: Install PyInstaller
+        run: pip install pyinstaller
+      - name: Build conjure.exe
+        run: pyinstaller --onefile --noconsole conjure.py
+      - name: Publish latest build
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: latest-build
+          name: Latest build
+          make_latest: true
+          files: dist/conjure.exe
+          body: |
+            Automatically built from the latest `main` (commit ${{ github.sha }}).
+            This is not a versioned release — it always reflects whatever is
+            currently on `main`. Download `conjure.exe` below and run it directly;
+            no Python install needed.

README.md

@@ -8,7 +8,14 @@ creature models. It automates binary edits to `.m2` model files and `.dbc` datab
 you'd otherwise do by hand in a hex editor. It's pure, deterministic file manipulation — no
 machine learning, no network access, nothing leaves your machine.
 
-## Requirements
+## Windows: just want a double-clickable app?
+
+Grab the always-up-to-date prebuilt `conjure.exe` from the
+**[latest release](../../releases/latest)** — no Python install needed. It's rebuilt
+automatically by GitHub Actions every time `main` changes, so it never goes stale the way a
+manually-committed `.exe` would. Download `conjure.exe` from that page and double-click it.
+
+## Requirements (running from source)
 
 - Python 3.7+ (Windows/macOS/Linux). Conjure's GUI uses `tkinter`, which ships with the standard
   Python installer on Windows and macOS.
@@ -143,14 +150,19 @@ shows the re-parsed, resolved values.
 
 Output files land in a `conjure_output/` folder next to your input files.
 
-## Building a Windows .exe
+## Building a Windows .exe yourself
+
+Most people should just grab the [latest release](../../releases/latest) instead (see above) —
+this is only for building your own copy, e.g. to test local changes:
 
 ```
 pip install pyinstaller
 pyinstaller --onefile --noconsole conjure.py
 ```
 
-The resulting `conjure.exe` will be in `dist/`.
+The resulting `conjure.exe` will be in `dist/`. Don't commit it to the repo — it goes stale the
+moment `conjure.py` changes, which is exactly what the automated release build (see above) exists
+to avoid.
 
 ## Running the self-tests