Create callbacks.py

bot/ui/callbacks.py

@@ -0,0 +1,11 @@
+# PATH: bot/ui/callbacks.py
+# small + safe callback format
+# example: "setdef:<profile_id>"
+def set_default_cb(profile_id: str) -> str:
+    return f"setdef:{profile_id}"
+
+def parse_cb(data: str) -> tuple[str, str]:
+    if ":" not in data:
+        return data, ""
+    a, b = data.split(":", 1)
+    return a, b