version footer

app.py

@@ -147,6 +147,25 @@ WEBP_SAVE_PARAMS = {
     "quality": 95,  # tylko jeśli lossless=False
 }
 
+
+def build_fingerprint(paths):
+    h = hashlib.sha256()
+    for base in paths:
+        if not os.path.exists(base):
+            continue
+        for root, _, files in os.walk(base):
+            for f in sorted(files):
+                p = os.path.join(root, f)
+                try:
+                    with open(p, "rb") as fh:
+                        h.update(fh.read())
+                except Exception:
+                    pass
+    return h.hexdigest()[:8]
+
+APP_VERSION = f"{datetime.now():%Y.%m.%d}+{build_fingerprint(['templates','static','app.py'])}"
+app.config['APP_VERSION'] = APP_VERSION
+
 db = SQLAlchemy(app)
 socketio = SocketIO(app, async_mode="eventlet")
 login_manager = LoginManager(app)
@@ -1320,6 +1339,11 @@ def load_user(user_id):
     return db.session.get(User, int(user_id))
 
 
+@app.context_processor
+def inject_version():
+    return {'APP_VERSION': app.config['APP_VERSION']}
+
+
 @app.context_processor
 def inject_time():
     return dict(time=time)