HAKCD v0.1.30 - Phase V1 Visual Style Guide

Phase V1 - Visual Style Guide + Reference Library Scaffold

Foundational visual recovery sprint. Documentation + version bump only;
no .lua source touched, no assets regenerated, no validators modified.

What ships

• docs/style_guide.md - the sacred visual contract (12 sections):
  purpose, character scale, perspective, black-mass rule, line weight,
  dithering rules, dither pattern catalog, UI placement, hardware
  readability, banned methods, reference games, acceptance / sign-off.
• docs/reference/README.md - reference library scaffolding + workflow.
• docs/reference/playdate_reference_games.md - per-game detail for the
  six visual targets.
• docs/reference/{characters,rooms,ui,palettes,games}/ - stub
  directories ready for V4-V8 reference imagery.

Versioning note

Mission brief specified 0.1.27 -> 0.1.28, but v0.1.29 (Phase V9 hardware-
review scaffold) already shipped on main ahead of V1. V1 sequenced to
v0.1.30 to avoid a backwards version.

Rules enumerated

12 (style guide sections 1-12).

Banned methods declared

4 (ImageMagick primitive draw commands, concept auto-shrink resize,
global ordered-dither as output filter, text-label baking into sprites).

Reference games documented

6 (Mars After Midnight, Pick Pack Pup, Crankin's Time Travel Adventure,
Casual Birder, Saturday Edition, Demon Quest 85).