forked from Foxyz/sync_replay_project
64 KiB rejected normal 128px PNGs. 128 KiB fits any 128x128 PNG (raw <= 64 KiB, worst-case base64 ~95 KiB chars) while still bounding abuse. PNG kept for transparency. Pipeline now measures the encoded base64 against RelayConstants (was checking the wrong variable with its own 512 KiB limit) and drops dead crop code. Server policy, still v4. Trade noted: avatars ride the 1 Hz room broadcast, uplink scales with cap; hash-reference follow-up later.