Make character development an unversioned TODO section

MEMORY.md

@@ -10,7 +10,7 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   prototyped with the existing builder (`npc_crowd_a` bun/slim/sunglasses, `npc_crowd_b`
   bald/broad/beard/shoulder bag, `npc_crowd_c` coat/umbrella, `npc_crowd_d` hood/cup); all audit
   clean at 4,550–5,258 tris / 4,356–5,086 verts. Prototype assets stay in
-  `tmp/npc-research/generator_proto/`; do not add them to the 0.10.0 release candidate.
+  `tmp/npc-research/generator_proto/`; do not add them to the current release candidate.
   **Quaternius is a reference, not a shipped base:** welding brings `Casual_Hoodie` from 12,518
   to 3,199 verts and a 0.75 decimate to 2,423 verts / 4,654 tris, and its Idle/Walk clips read
   well, but the T-pose 62-bone realistic rig/proportions do not match the arm-down 13-bone