Promote NES PowerPad Test Card (U) from _wip to top-level project

Moves NES PowerPad Test Card (U) from _wip/ to NES PowerPad Test Card (U)/ with full ROM build:
- Adds header.s, chr.s, linker.cfg (HEADER+PRG+CHR segments)
- Updates Makefile to build and verify reconstructed.nes vs rom.nes
- Adds rom.nes copy + copilot/rom.nes symlink per repo convention
- Verified byte-identical build

Pass 1 complete: full code/data classification (~7.2% code / ~92.8% data)
Pass 2 complete: routine headers for all ~50 labels, semantic naming for key
routines (Reset, NmiHandler, VramWrite, ReadPad, ProcessPads, etc.),
zero-page aliases in locals.inc (Zp00-Zp15)
Pass 3 complete: data tables named (PaletteData at ,
PadBitTableLives at )

Root OVERVIEW.md updated:
- Removes NES PowerPad Test Card from _wip skeleton table (21 → 20 skeletons)
- Adds NES PowerPad Test Card as #15 in numbered inventory (BYTE-IDENTICAL, Pass 2/3)
- Updates summary count from 14 to 15 projects

NES PowerPad Test Card (U)/copilot/reconstructed.lbl

@@ -0,0 +1,94 @@
+al 00E548 .Label_E548
+al 00E53A .ClearScreen
+al 00E534 .ClearAPUNoise
+al 00E52E .SetAPUNoise
+al 00E522 .Label_E522
+al 00E514 .Label_E514
+al 00E52D .ProcessPadBitsDone
+al 00E509 .Label_E509
+al 00E4FA .ProcessPadBits
+al 00E4B4 .PadBitTableLives
+al 00E4AA .LoadPatternTable7
+al 00E4A0 .LoadPatternTable6
+al 00E49F .UpdatePadsDone
+al 00E48F .Label_E48F
+al 00E47F .UpdatePads
+al 00E47A .Label_E47A
+al 00E471 .Label_E471
+al 00E46F .ShiftVar4
+al 00E46A .Label_E46A
+al 00E45F .Label_E45F
+al 00E459 .ShiftVar3
+al 00E454 .Label_E454
+al 00E44B .Label_E44B
+al 00E449 .ShiftVar2
+al 00E444 .Label_E444
+al 00E439 .Label_E439
+al 00E433 .ShiftVar1
+al 00E424 .Label_E424
+al 00E42F .Label_E42F
+al 00E41E .Label_E41E
+al 00E407 .DrawLives
+al 00E3F8 .Label_E3F8
+al 00E403 .Label_E403
+al 00E3F5 .Label_E3F5
+al 00E3E1 .DrawScore
+al 00E3D8 .Label_E3D8
+al 00E3D1 .Label_E3D1
+al 00E3C3 .Label_E3C3
+al 00E3B5 .Label_E3B5
+al 00E3AE .Label_E3AE
+al 00E3A0 .Label_E3A0
+al 00E398 .ProcessPads
+al 00E37F .Label_E37F
+al 00E362 .ShiftPads
+al 00E35B .Label_E35B
+al 00E34D .Label_E34D
+al 00E361 .ReadPadDone
+al 00E338 .ReadPad
+al 00E32D .ClearGameVars
+al 00E326 .Label_E326
+al 00E312 .Label_E312
+al 00E2FE .Label_E2FE
+al 00E2F0 .ClearRows
+al 00E2B0 .DrawPlayer2Pad
+al 00E270 .DrawPlayer1Pad
+al 00E236 .InitRoundParams
+al 00E22D .ResetScroll
+al 00E219 .SetPPUCTRL_NMI
+al 00E1FB .DisableNMI
+al 00E1F1 .EnableNMI
+al 00E1E3 .Label_E1E3
+al 00E1F0 .VramWriteDone
+al 00E1D2 .Label_E1D2
+al 00E1CC .VramWrite
+al 00E1C2 .LoadPatternTable5
+al 00E1B8 .LoadPatternTable4
+al 00E1AE .LoadPatternTable3
+al 00E1A4 .LoadPatternTable2
+al 00E19A .LoadPatternTable1
+al 00E187 .ClearVRAM_FillFF
+al 00E16B .InitAPU
+al 00E164 .Label_E164
+al 00E150 .Label_E150
+al 00E142 .ClearVRAM_Fill23
+al 00E141 .ClearPaletteDone
+al 00E121 .PaletteData
+al 00E113 .Label_E113
+al 00E107 .LoadPalette
+al 00E0FB .Label_E0FB
+al 00E0EB .ClearVRAM
+al 00E0DD .Label_E0DD
+al 00E0CF .Label_E0CF
+al 00E0C9 .ClearRAM
+al 00E0B5 .Label_E0B5
+al 00E0B0 .Label_E0B0
+al 00E09B .ResetInit
+al 00E092 .WaitForVBlank
+al 00E06E .NmiHandler
+al 00E068 .Label_E068
+al 00E058 .Label_E058
+al 00E02F .Label_E02F
+al 00E02B .Label_E02B
+al 00E01E .Label_E01E
+al 00E000 .Reset