Home-screen web app; phone layout; reload on deploy

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app.py

@@ -4,6 +4,7 @@
 from __future__ import annotations
 
 import argparse
+import hashlib
 import json
 import logging
 import mimetypes
@@ -27,6 +28,19 @@ MAX_BODY = 16 * 1024
 NAME = re.compile(r"^[\w .'-]{2,20}$")
 TICK_SECONDS = 15
 
+
+def build_version() -> str:
+    """Changes whenever the code or client does; open tabs reload when it does."""
+    digest = hashlib.sha256()
+    for path in sorted([APP_DIR / "app.py", APP_DIR / "game.py", *STATIC_DIR.rglob("*")]):
+        if path.is_file():
+            digest.update(path.name.encode())
+            digest.update(path.read_bytes())
+    return digest.hexdigest()[:12]
+
+
+VERSION = build_version()
+
 mimetypes.add_type("application/manifest+json", ".webmanifest")
 
 
@@ -360,7 +374,7 @@ class Handler(BaseHTTPRequestHandler):
             for e in reversed(world["events"]) if e["status"] == "done"
         ][:10]
         return {
-            "now": now, "dev": self.dev, "uid": uid,
+            "now": now, "dev": self.dev, "uid": uid, "version": VERSION,
             "me": player_view(world, player, now) if player else None,
             "summary": summary,
             "city": city_view(world, now),