v0.3.1 — Fix plugin skill auto-discovery

Fix

• Add "skills": "./skills/" to .claude-plugin/plugin.json so /game-art:* slash commands are auto-registered when the plugin is installed
• Previously skills existed in skills/ but Claude Code couldn't discover them without the skills field in plugin.json

Other

• Bump version to 0.3.1
• Update asset registry with flat-roof house asset

Full Changelog: v0.3.0...v0.3.1

v0.3.0 — Style Intelligence & Art Memory 2.0

What's New — Phase 8E

Style Intelligence (src/intelligence/)

• StyleCompiler — Compiles style+material+detail into flat StyleConstraints (palette limits, outline rules, cluster grammar, texture density, forbidden patterns)
• VisualSignatureEngine — Deterministic visual fingerprint from canvas: palette distribution, cluster stats, edge/silhouette complexity, shadow/highlight ratios, texture density. Similarity scoring between signatures
• StyleConsistencyChecker — 7-dimension post-generation check (palette, outline, lighting, clusters, material, texture, detail) against compiled constraints
• StyleRepairPlanner — Generate prioritized repair actions from failed consistency checks
• StyleInsightEngine — Detect recurring patterns in approved assets with confidence scoring. Analyze rejection patterns for anti-pattern detection

Smart Reference Retrieval

• ReferenceRetriever — Ranked retrieval by canonical>approved>style match>material>type>recency. Budget-capped (default 5 refs)
• ReferencePackBuilder — Compact reference pack: style constraints + 3-5 canonical refs + 1-2 negative examples + material palette
• SessionBootstrapService — Dynamic session context generator: current style summary, canonical assets, anti-patterns, recent decisions. A new Claude session can reconstruct the style without conversation history

10 New MCP Tools (117 total)

• art.style.compile — compile style constraints
• art.style.check — run consistency check on canvas
• art.style.repair — generate repair plan
• art.style.bootstrap — get session bootstrap context
• art.ref.retrieve — smart reference retrieval
• art.ref.pack — build reference pack
• art.ref.canonical — get canonical assets
• art.memory.signature — compute visual signature
• art.memory.insights — get style insights
• art.memory.negative — get negative patterns

Extended Existing Systems

• StyleLoader — now loads materials.yaml as 8th style file
• ArtMemoryService — added updateAnchor(), updateReference(), updateRejection() methods
• ResolvedStyle — extended with optional materials field
• Studio API — 3 new endpoints: bootstrap, insights, consistency

Rejection Taxonomy

18 structured rejection categories: STYLE_MISMATCH, PALETTE_MISMATCH, TOO_NOISY, OVERDETAILED, BAD_CLUSTERING, etc.

Canonical Promotion Flow

draft → approved → candidate_canonical → canonical

Stats

• 117 MCP tools total (107 + 10 new)
• ~2,700 lines new code in src/intelligence/
• 10 new files, 8 modified files
• Zero system duplication — extends existing style/memory/detail

Breaking Changes

None — fully backward compatible.

v0.2.0 — Canvas Engine + Detail Intelligence

What's New

Canvas Drawing Engine (Texel-style)

• 14 canvas MCP tools (art.canvas.*) — AI paints pixel art directly using drawing primitives
• Server-side PixelCanvas with line, rect, circle, fill, noise, dither, voronoi, polygon, gradient, symmetry, outline, stamp, shading
• Deterministic PRNG (mulberry32) for reproducible procedural textures
• Auto-save to drafts/ with file-based Studio bridge

Phase 8D — Detail & Material Intelligence

• 16 detail MCP tools (art.detail.*, art.critic.*)
• DetailPassEngine — 12-pass pipeline: reference → silhouette → base → shadow → form → material → texture → micro detail → cleanup → critique → refine → QA
• 7 texture generators: noise-cluster, voronoi, directional-grain, crack, speckle, cavity, edge-breakup
• PixelClusterEngine — cluster detection, merge orphans, expand/erode, shape templates
• MaskEngine — silhouette/shadow/highlight masks, boolean ops, focal density maps
• ArtCritic — 12-dimension spatial scoring with actionable refinement plans
• 11 material profiles (stone, wood, metal, grass, dirt, water, leather, cloth, skin, ice, magic)
• 8 detail profiles (low/medium/high/hero/boss/tile/item)
• DetailBudget + DetailCeiling for anti-overdetail protection

Game Art Studio (Web UI)

• Live Canvas PiP — floating preview shows selected asset OR active canvas session
• Detail Inspector tab — score breakdown, pass timeline, art plan, critique issues
• Auto-open — canvas sessions auto-select in editor when AI draws
• Size presets in create dialog (per asset type)
• Relative time display on assets
• Save to workspace button in PiP
• Reference board X button fix

Assets

• 12 pixel art assets generated: rocks (5 variants), tree, bush, cottages (4 iterations)
• Full registry with YAML metadata
• QA results, production manifests, reference analyses

Stats

• 107 MCP tools total (91 existing + 16 new)
• ~7,000 lines of new code
• 27 new files in src/detail/

Breaking Changes

None — fully backward compatible.

v0.0.1 — Phase 1-7 Complete

game-art-mcp v0.0.1

AI-driven pixel-art style system and MCP server for 2D RPG game art direction.

What's included

Complete art production pipeline — Phases 1 through 7:

Phase	Component	MCP Tools
1	Versioned Style System	5
2	Asset Registry	8
3	Art Memory & References	16
4	Art QA Engine	7
5	Provider Adapters	8
6	Production Orchestrator	10
7	Versioning & Approval	13

67 MCP tools • 156 tests • Full E2E validated

Quick Start

npm install
npm run build
npm test
npx tsx scripts/run-e2e.ts  # Full pipeline + web preview

Preview

npm run art-preview  # http://localhost:5173