chore(skills): promote runbook skills to managed-skills; drop superseded SKILL.md

- 31 new managed skills (anubis/arr/authentik/hermes/freetoken/podman/llm-swap
  runbooks etc.) now tracked.
- Removed superseded skills: omp_harness_config, peon_ping_integration
  (replaced by user-authored peon-ping-* managed skills),
  rocmfp4-strix-benchmark-orchestration.
- New memory-root skills: niri_compositor_ops, omp_git_workflow,
  omp_model_config, quadlet-media-migration, homelab-service-triage,
  hermes-dankclaw-ops, frank-default-large-ops, caddy-auth-dns-playbook.

agent/managed-skills/pico8-asset-standards/SKILL.md

@@ -0,0 +1,46 @@
+---
+name: pico8-asset-standards
+description: "Standards for building cohesive, production-grade PICO-8 asset sheets, tilesets, and spritesheets with consistent palette, perspective, and detail flow."
+---
+
+# PICO-8 Asset Standards
+
+## Purpose
+Ensure every PICO-8 asset (tileset, spritesheet, character sheet, or asset sheet) is cohesive, production-grade, and ready to drop into a game without rework.
+
+## Core Requirements
+
+### Palette Discipline
+- Use the PICO-8 16-color palette exclusively.
+- Establish a dominant color family (2–3 related hues) for the main subject.
+- Reserve accent colors for highlights, danger zones, and focal points only.
+- Maintain consistent color roles across all assets in a sheet (e.g., if shadow is dark blue on one tile, it is dark blue everywhere).
+
+### Perspective & Lighting
+- Choose ONE perspective per sheet (top-down, side-view, or isometric) and never mix.
+- Apply light from a single consistent direction across all tiles and sprites.
+- Shadows follow the same shape logic on every asset (e.g., all cast shadows point bottom-right).
+
+### Detail Flow & Hierarchy
+- Start tiles/props from the palette's dominant colors, then add edge highlights and shading.
+- Keep tile density uniform — avoid one hyper-detailed tile next to empty flat tiles.
+- Props and decorations should read clearly at 8x8 or 16x16 without zooming.
+
+### Sheet Organization
+- Group related assets together (terrain together, props together, characters together).
+- Leave consistent spacing between assets for clean cropping.
+- Label sections visually through grouping, not text.
+
+### Cohesion Checks
+Before finishing an asset sheet, verify:
+- All colors appear in the PICO-8 palette.
+- Perspective does not flip mid-sheet.
+- Lighting direction is consistent.
+- Edge treatment (dither, outline, anti-aliasing style) matches across assets.
+- No orphan tiles that don't connect to any neighbor.
+
+## Common Pitfalls
+- Mixing 8-bit and 16-bit detail levels.
+- Using outline style on some tiles but not others.
+- Forgetting palette constraint — colors outside the 16 PICO-8 colors.
+- Inconsistent tile edge connections (a grass tile that only connects to one dirt variant).