Add "Change V5.6.0: Domain Advisory Pattern Proposal"

Change-V5.6.0%3A-Domain-Advisory-Pattern-Proposal.md

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+> **Type:** Change Proposal
+> **Version:** V5.6.0
+> **Plugin:** projman, viz-platform
+> **Status:** In Progress
+> **Date:** 2026-02-01
+
+# Domain Advisory Pattern - viz-platform Integration
+
+## Summary
+
+Implement a domain advisory pattern that enables projman (sprint management) to consult domain-specific plugins during planning and execution phases. Sprint 1 delivers the full pattern for viz-platform, including the reusable backbone skill.
+
+## Motivation
+
+Currently, projman operates independently without domain-specific knowledge. When planning or executing work that touches visualization code, there's no systematic way to:
+- Detect that work involves a specific domain (viz-platform, data-platform, etc.)
+- Consult domain experts during planning for design considerations
+- Run domain-specific quality gates before marking work complete
+
+## Design
+
+### Core Skill: domain-consultation.md
+
+A projman skill that:
+1. **Detects** domain involvement via file patterns, labels, and keywords
+2. **Consults** domain plugins during planning (design considerations, risks)
+3. **Gates** execution via domain-specific pass/fail checks
+
+### viz-platform Integration
+
+| Component | Purpose |
+|-----------|---------|
+| `design-reviewer.md` (agent) | Audit agent using viz-platform MCP tools |
+| `design-review.md` (command) | Standalone user command for detailed audits |
+| `design-gate.md` (command) | Binary pass/fail for sprint gates |
+| `design-system-audit.md` (skill) | Audit rules and violation patterns |
+
+### Extensibility
+
+The pattern is designed for future domains:
+- data-platform: data quality gates, schema validation
+- cmdb-assistant: infrastructure compliance checks
+
+## Files Changed
+
+### Created (5)
+- `plugins/projman/skills/domain-consultation.md`
+- `plugins/viz-platform/agents/design-reviewer.md`
+- `plugins/viz-platform/commands/design-review.md`
+- `plugins/viz-platform/commands/design-gate.md`
+- `plugins/viz-platform/skills/design-system-audit.md`
+
+### Modified (7)
+- `plugins/projman/agents/planner.md`
+- `plugins/projman/agents/orchestrator.md`
+- `plugins/projman/skills/label-taxonomy/labels-reference.md`
+- `plugins/viz-platform/.claude-plugin/plugin.json`
+- `.claude-plugin/marketplace.json`
+- `CHANGELOG.md`
+- `README.md`
+
+## Implementations
+- [Implementation 1 (Sprint 9)](wiki-link) - In Progress