Promotes Donkey Kong Jr

Adds remaining NROM as _wip
Update gitignore to not keep object files
Adds AGENTS.md as this is an AI helped project

_wip/Millipede (U)/OVERVIEW.md

@@ -0,0 +1,53 @@
+# Millipede (U) — Skeleton Project
+
+ROM: `_wip/Millipede (U)/Millipede (U).nes` (24,592 bytes, iNES). Status: **SKELETON — not yet disassembled.** The entire 16 KB PRG bank is a single unclassified block; `copilot/prg.s` is the default-project skeleton (`default_project.tar.gz`) that reproduces it as one `.incbin`. The skeleton build is **byte-identical** at the PRG level.
+
+
+## ROM Facts
+
+| Property | Value |
+|----------|-------|
+| Mapper | 0 (NROM) — from the iNES header |
+| PRG | 16 KB (header claims map at CPU $C000–$FFFF) |
+| CHR | 8 KB |
+| Mirroring | Horizontal |
+| Battery-backed flag | clear |
+| ROM SHA-256 | `627c0573e7d9fe306369f184ef0258950be43b6b530e668c6e840ed6c416c52f` |
+| PRG SHA-256 | `1dab22d522b86ce73dd2214447f734188907f7c3b4c7d54da2c6bb2f80daf9bb` |
+
+## Interrupt Vectors (taken from PRG $3FFA–$3FFF)
+
+| Vector | Target | Note |
+|--------|--------|------|
+| NMI | `$C7F1` | per-frame heartbeat |
+| RESET | `$C735` | enters at $C735 inside the first pages (the Donkey Kong Jr.-style non-$C000 entry) |
+| IRQ | `$FFF0` | lands in the vector-page padding — unused placeholder |
+
+## `copilot/` Contents
+
+| File | Purpose |
+|------|---------|
+| `Millipede (U).nes` | original ROM image (reference) |
+| `prg.bin` / `header.bin` / `chr.bin` | split image, produced by `_tools/splitnes.py` |
+| `prg.s` | Pass-1 skeleton: `.incbin "prg.bin", $0000, $4000` (whole PRG) |
+| `symbols.inc` | shared NES hardware constants (PPU/APU/controller, from the skeleton) |
+| `locals.inc` | project-local zero-page aliases — empty for now (filled in Pass 2) |
+| `linker.cfg` | PRG at $C000, 16 KB, `fill = yes` |
+| `Makefile` | links `reconstructed_prg.bin` and `cmp`s it against `prg.bin` |
+| `reconstructed_prg.bin` | build output from the last verified build |
+
+Header/CHR are reproduced verbatim from `header.bin`/`chr.bin` (not linked): `make` verifies **PRG bytes only** at this stage, which is exactly what a skeleton proves. When this project is promoted to a full disassembly, `header.s` / `chr.s` (as e.g. `Burger Time (U)`) and a full-ROM `make` target get added.
+
+## Build
+
+```bash
+cd "_wip/Millipede (U)/copilot"
+make        # → cmp reconstructed_prg.bin prg.bin → "BYTE-IDENTICAL"
+```
+
+## Next Steps (per `PROMPTS.md`)
+
+1. **Pass 1** — replace the blanket `.incbin` with classified code/data: trace reachability from RESET ($C735) and NMI ($C7F1), emit per-instruction `; PRG:$xxxx AA BB` annotations, keep unreached bytes as explicit `.byte` blocks.
+2. **Pass 2** — replace `Label_`/`Sub_` names with semantic routine names; fill `locals.inc`.
+3. **Pass 3** — name data tables/structures; release provisional flags.
+4. **Promotion** — move to a top-level `<name>/copilot/` folder, add full-ROM build (header.s + chr.s + vectors), and write the power-on flow `OVERVIEW.md` in the established style; then it joins the root index's numbered inventory.