Phase 3: reconcile data/battle/stat_mod_names.asm

- Rename to stat_mod_names_reconcile.asm (follows _reconcile.asm convention)
- WLA-DX syntax (.DB) with 6 stat mod strings
- Drop assert semantics (referenced constants only in RGBDS)
- Track in git for clean working tree

wla/data/battle/stat_mod_names.asm

@@ -1,9 +0,0 @@
-; Stats that move effects can raise or lower
-; The relevant move effect IDs correspond to the stats
-
-.DB "ATTACK"
-.DB "DEFENSE"
-.DB "SPEED"
-.DB "SPECIAL"
-.DB "ACCURACY"
-.DB "EVASION"