Complete Pass 3 on Wild Gunman (U) and Joypad Test Cartridge (U)

- Wild Gunman (U): Updated OVERVIEW.md to Pass 2/3, added SpriteOamTable comment at , fixed build path references
- Joypad Test Cartridge (U): Updated OVERVIEW.md to Pass 2/3, fixed build path references
- Donkey Kong Jr. (JU): Fixed root OVERVIEW.md summary table (was Pass 1, actually Pass 2/3 per project OVERVIEW.md)
- Root OVERVIEW.md: Updated summary table (Wild Gunman & Joypad Test Cartridge → Pass 2/3), updated observation notes

All projects verified byte-identical.

Wild Gunman (U)/copilot/prg.s

@@ -1505,6 +1505,7 @@ Label_C5EC:
     .byte Zp01, Zp01, GameMode, Zp00, $3F, Zp00, $50, $0F, $3F, $05, Zp01, GameMode, Zp00, $3F, Zp00, $50  ; CPU:$C818 PRG:0818  01 01 30 00 3F 00 50 0F 3F 05 01 30 00 3F 00 50
     .byte $0F, $3F, Zp09, Zp01, GameMode, Zp00, $3F, Zp00, $50, $0F, $3F, $0D, Zp01, GameMode, Zp00, $3F  ; CPU:$C828 PRG:0828  0F 3F 09 01 30 00 3F 00 50 0F 3F 0D 01 30 00 3F
     .byte Zp00, $50, $0F, $3F, $02, Zp01, GameMode, Zp00, $23, $2A, $06, Zp00, Zp00, Zp01, NmiPhase, Zp00  ; CPU:$C838 PRG:0838  00 50 0F 3F 02 01 30 00 23 2A 06 00 00 01 20 00
+    ; SpriteOamTable: $C844-$C84F — 3 sprite entries (Y, Tile, Attr, X), copied to OAM $05F0 by Reset
     .byte Zp00, Zp01, NmiPhase, Zp00, Zp00, Zp01, NmiPhase, Zp00, NmiPhase, $12, $D9, $A2, $03, $BD, $40, $C8  ; CPU:$C848 PRG:0848  00 01 20 00 00 01 20 00 20 12 D9 A2 03 BD 40 C8
     .byte $95, $0C, $CA, $10, $F8, $A9, Zp01, $85, $23, $A9, Zp01, $85, $33, $A2, Zp00, $A9  ; CPU:$C858 PRG:0858  95 0C CA 10 F8 A9 01 85 23 A9 01 85 33 A2 00 A9
     .byte Zp00, $AC, $FE, $05, $84, $3F, $F0, $17, $A2, $3D, $A9, $02, $88, $F0, $10, $A9  ; CPU:$C868 PRG:0868  00 AC FE 05 84 3F F0 17 A2 3D A9 02 88 F0 10 A9