Character portrait

Crop-and-zoom picture editor on the Concept page, stored (re-encoded to a
256 px WebP data URL) inside the character; shown on the sheet header, in
the lobby player bar and as token icon on the map.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HJhXuLD2Z6hv3Wqeq9UL9K

backend/app/maps.py

@@ -16,6 +16,7 @@ from fastapi.responses import Response
 from PIL import Image, ImageOps
 
 from . import vision
+from .portrait import tag as portrait_tag
 
 MAX_UPLOAD = 12_000_000     # bytes of the uploaded file
 MAX_SIDE = 4096             # larger images are scaled down
@@ -350,7 +351,13 @@ def install(api, db, current_user, lobby_for, dm_only, hub, event, store_dir: Pa
                     name = (json.loads(r["data"]).get("name") if r["data"] else "") or r["username"]
                 except ValueError:
                     name = r["username"]
-            out.append({"id": r["id"], "kind": "player" if player else "npc", "username": r["username"], "name": name,
+            pt = ""
+            if player and r["data"]:
+                try:
+                    pt = portrait_tag(json.loads(r["data"]).get("portrait"))
+                except ValueError:
+                    pass
+            out.append({"id": r["id"], "kind": "player" if player else "npc", "username": r["username"], "name": name, "portrait": pt,
                         "x": r["x"], "y": r["y"], "size": r["size"], "hidden": bool(r["hidden"]),
                         "color": (r["mcolor"] or "#999999") if player else r["color"],
                         "can_move": ctx["is_dm"] or (r["user_id"] == user["id"] and not (ctx["los"] and r["x"] is None))})