feat(agents): add model selection and standardize frontmatter

Add per-agent model selection using Claude Code's now-supported `model`
frontmatter field, and standardize all agent frontmatter across the
marketplace.

Changes:
- Add `model` field to all 25 agents (18 sonnet, 7 haiku)
- Fix viz-platform/data-platform agents using `agent:` instead of `name:`
- Remove non-standard `triggers:` field from domain agents
- Add missing frontmatter to 13 agents
- Document model selection in CLAUDE.md and CONFIGURATION.md
- Fix undocumented commands in README.md

Model assignments based on reasoning depth, tool complexity, and latency:
- sonnet: Planner, Orchestrator, Executor, Coordinator, Security Reviewers
- haiku: Maintainability Auditor, Test Validator, Git Assistant, etc.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/clarity-assist/agents/clarity-coach.md

@@ -1,3 +1,9 @@
+---
+name: clarity-coach
+description: Patient, structured coach helping users articulate requirements clearly. Uses neurodivergent-friendly communication patterns.
+model: sonnet
+---
+
 # Clarity Coach Agent
 
 ## Visual Output Requirements

plugins/claude-config-maintainer/agents/maintainer.md

@@ -1,6 +1,7 @@
 ---
 name: maintainer
 description: CLAUDE.md optimization and maintenance agent
+model: sonnet
 ---
 
 # CLAUDE.md Maintainer Agent

plugins/cmdb-assistant/agents/cmdb-assistant.md

@@ -1,3 +1,9 @@
+---
+name: cmdb-assistant
+description: Infrastructure management assistant specialized in NetBox CMDB operations. Use for device management, IP addressing, and infrastructure queries.
+model: sonnet
+---
+
 # CMDB Assistant Agent
 
 You are an infrastructure management assistant specialized in NetBox CMDB operations.

plugins/code-sentinel/agents/refactor-advisor.md

@@ -1,5 +1,7 @@
 ---
-description: Code structure and refactoring specialist
+name: refactor-advisor
+description: Code structure and refactoring specialist. Use when analyzing code quality, design patterns, or planning refactoring work.
+model: sonnet
 ---
 
 # Refactor Advisor Agent

plugins/code-sentinel/agents/security-reviewer.md

@@ -1,6 +1,7 @@
 ---
 name: security-reviewer
 description: Security-focused code review agent
+model: sonnet
 ---
 
 # Security Reviewer Agent

plugins/contract-validator/agents/agent-check.md

@@ -1,6 +1,7 @@
 ---
 name: agent-check
 description: Agent definition validator for quick verification
+model: haiku
 ---
 
 # Agent Check Agent

plugins/contract-validator/agents/full-validation.md

@@ -1,3 +1,9 @@
+---
+name: full-validation
+description: Contract validation specialist for comprehensive cross-plugin compatibility validation of the entire marketplace.
+model: sonnet
+---
+
 # Full Validation Agent
 
 You are a contract validation specialist. Your role is to perform comprehensive cross-plugin compatibility validation for the entire marketplace.

plugins/data-platform/agents/data-advisor.md

@@ -1,10 +1,7 @@
 ---
-agent: data-advisor
-description: Reviews code for data integrity, schema validity, and dbt compliance using data-platform MCP tools
-triggers:
-  - /data-review command
-  - /data-gate command
-  - projman orchestrator domain gate
+name: data-advisor
+description: Reviews code for data integrity, schema validity, and dbt compliance using data-platform MCP tools. Use when validating database operations or data pipelines.
+model: sonnet
 ---
 
 # Data Advisor Agent

plugins/data-platform/agents/data-analysis.md

@@ -1,6 +1,7 @@
 ---
 name: data-analysis
 description: Data analysis specialist for exploration and profiling
+model: sonnet
 ---
 
 # Data Analysis Agent

plugins/data-platform/agents/data-ingestion.md

@@ -1,3 +1,9 @@
+---
+name: data-ingestion
+description: Data ingestion specialist for loading, transforming, and preparing data for analysis.
+model: haiku
+---
+
 # Data Ingestion Agent
 
 You are a data ingestion specialist. Your role is to help users load, transform, and prepare data for analysis.

plugins/doc-guardian/agents/doc-analyzer.md

@@ -1,5 +1,7 @@
 ---
-description: Specialized agent for documentation analysis and drift detection
+name: doc-analyzer
+description: Specialized agent for documentation analysis and drift detection. Use when detecting or fixing discrepancies between code and documentation.
+model: sonnet
 ---
 
 # Documentation Analyzer Agent

plugins/git-flow/agents/git-assistant.md

@@ -1,3 +1,9 @@
+---
+name: git-assistant
+description: Git workflow assistant for complex git operations, conflict resolution, and repository history management.
+model: haiku
+---
+
 # Git Assistant Agent
 
 ## Visual Output Requirements

plugins/pr-review/agents/coordinator.md

@@ -1,3 +1,9 @@
+---
+name: coordinator
+description: Review coordinator that orchestrates the multi-agent PR review process. Dispatches to specialized reviewers, aggregates findings, and produces the final review report. Use proactively after code changes.
+model: sonnet
+---
+
 # Coordinator Agent
 
 ## Visual Output Requirements

plugins/pr-review/agents/maintainability-auditor.md

@@ -1,3 +1,9 @@
+---
+name: maintainability-auditor
+description: Identifies code complexity, duplication, naming issues, and architecture concerns in PR changes.
+model: haiku
+---
+
 # Maintainability Auditor Agent
 
 ## Visual Output Requirements

plugins/pr-review/agents/performance-analyst.md

@@ -1,3 +1,9 @@
+---
+name: performance-analyst
+description: Performance-focused code reviewer that identifies performance issues, inefficiencies, and optimization opportunities.
+model: sonnet
+---
+
 # Performance Analyst Agent
 
 ## Visual Output Requirements

plugins/pr-review/agents/security-reviewer.md

@@ -1,6 +1,7 @@
 ---
 name: security-reviewer
 description: Security-focused code reviewer for PR analysis
+model: sonnet
 ---
 
 # Security Reviewer Agent

plugins/pr-review/agents/test-validator.md

@@ -1,3 +1,9 @@
+---
+name: test-validator
+description: Test quality reviewer that validates test coverage, test quality, and testing practices in PR changes.
+model: haiku
+---
+
 # Test Validator Agent
 
 ## Visual Output Requirements

plugins/projman/agents/code-reviewer.md

@@ -1,6 +1,7 @@
 ---
 name: code-reviewer
 description: Pre-sprint code quality review agent
+model: sonnet
 ---
 
 # Code Reviewer Agent

plugins/projman/agents/executor.md

@@ -1,6 +1,7 @@
 ---
 name: executor
 description: Implementation executor agent - precise implementation guidance and code quality
+model: sonnet
 ---
 
 # Implementation Executor Agent

plugins/projman/agents/orchestrator.md

@@ -1,6 +1,7 @@
 ---
 name: orchestrator
 description: Sprint orchestration agent - coordinates execution and tracks progress
+model: sonnet
 ---
 
 # Sprint Orchestration Agent

plugins/projman/agents/planner.md

@@ -1,6 +1,7 @@
 ---
 name: planner
 description: Sprint planning agent - thoughtful architecture analysis and issue creation
+model: sonnet
 ---
 
 # Sprint Planning Agent

plugins/viz-platform/agents/component-check.md

@@ -1,6 +1,7 @@
 ---
 name: component-check
 description: DMC component validation specialist
+model: haiku
 ---
 
 # Component Check Agent

plugins/viz-platform/agents/design-reviewer.md

@@ -1,10 +1,7 @@
 ---
-agent: design-reviewer
-description: Reviews code for design system compliance using viz-platform MCP tools
-triggers:
-  - /design-review command
-  - /design-gate command
-  - projman orchestrator domain gate
+name: design-reviewer
+description: Reviews code for design system compliance using viz-platform MCP tools. Use when validating DMC components, theme tokens, or accessibility standards.
+model: sonnet
 ---
 
 # Design Reviewer Agent

plugins/viz-platform/agents/layout-builder.md

@@ -1,3 +1,9 @@
+---
+name: layout-builder
+description: Practical dashboard layout specialist for creating well-structured layouts with filtering, grid systems, and responsive design.
+model: sonnet
+---
+
 # Layout Builder Agent
 
 You are a practical dashboard layout specialist. Your role is to help users create well-structured dashboard layouts with proper filtering, grid systems, and responsive design.

plugins/viz-platform/agents/theme-setup.md

@@ -1,3 +1,9 @@
+---
+name: theme-setup
+description: Design-focused theme setup specialist for creating consistent, brand-aligned themes for Dash Mantine Components applications.
+model: haiku
+---
+
 # Theme Setup Agent
 
 You are a design-focused theme setup specialist. Your role is to help users create consistent, brand-aligned themes for their Dash Mantine Components applications.