feat: web UI chat render, panels, presence + analytics

backend/src/utils/read/custom_emoji.py

@@ -0,0 +1,15 @@
+import asyncpg
+
+from utils.read.models import CustomEmojiRef
+
+_GET = """
+SELECT storage_key, downloaded, mime, kind FROM custom_emoji
+WHERE custom_emoji_id = $1
+"""
+
+
+async def current_custom_emoji(
+    pool: asyncpg.Pool, custom_emoji_id: int
+) -> CustomEmojiRef | None:
+    row = await pool.fetchrow(_GET, custom_emoji_id)
+    return CustomEmojiRef(**dict(row)) if row else None