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+# Change V5.4.0: Multi-Model Support - Sprint 7 Implementation
+
+**Type:** Feature
+**Version:** 5.4.0
+**Status:** In Progress
+**Sprint:** 7
+**Date:** 2026-01-28
+**Origin:** Conversation - user requested multi-LLM support for plugin agents
+
+## Proposal Reference
+
+[Change V5.4.0: Multi-Model Agent Support Proposal](https://gitea.hotserv.cloud/personal-projects/leo-claude-mktplace/wiki/Change-V5.4.0%3A-Multi-Model-Agent-Support-Proposal)
+
+## Sprint Scope
+
+### Phase 1: Documentation
+- [ ] Create `docs/MODEL-RECOMMENDATIONS.md` with task-type guidance
+- [ ] Update `docs/CONFIGURATION.md` with model configuration section
+- [ ] Update `CLAUDE.md` with model selection overview
+
+### Phase 2: Critical Agents (Opus)
+- [ ] `plugins/projman/agents/planner.md` - Add `model: opus`
+- [ ] `plugins/projman/agents/code-reviewer.md` - Add `model: opus`
+- [ ] `plugins/pr-review/agents/security-reviewer.md` - Add `model: opus`
+- [ ] `plugins/code-sentinel/agents/security-reviewer.md` - Add `model: opus`
+- [ ] `plugins/data-platform/agents/data-analysis.md` - Add `model: opus`
+
+### Phase 3: Haiku Agents (Cost Optimization)
+- [ ] `plugins/viz-platform/agents/component-check.md` - Add `model: haiku`
+- [ ] `plugins/contract-validator/agents/agent-check.md` - Add `model: haiku`
+
+### Phase 4: Plugin Defaults
+- [ ] `plugins/projman/.claude-plugin/plugin.json` - Add `defaultModel: sonnet`
+- [ ] `plugins/pr-review/.claude-plugin/plugin.json` - Add `defaultModel: sonnet`
+- [ ] `plugins/data-platform/.claude-plugin/plugin.json` - Add `defaultModel: sonnet`
+- [ ] `plugins/viz-platform/.claude-plugin/plugin.json` - Add `defaultModel: sonnet`
+- [ ] `plugins/code-sentinel/.claude-plugin/plugin.json` - Add `defaultModel: sonnet`
+- [ ] `plugins/contract-validator/.claude-plugin/plugin.json` - Add `defaultModel: sonnet`
+
+### Phase 5: Validation
+- [ ] Update `scripts/validate-marketplace.sh` to validate model field values
+
+## Issues Created
+
+*(To be populated during planning)*
+
+## Lessons Applied
+
+- **Plugin manifest validation:** Agents are auto-discovered from .md files, only need frontmatter changes
+- **Versioning workflow:** Use [Unreleased] in CHANGELOG, version bump at release time
+
+## Progress Log
+
+| Date | Status | Notes |
+|------|--------|-------|
+| 2026-01-28 | Planning | Sprint planning initiated |
+
+---
+
+**Tags:** feature, sprint-7, agents, model-selection, v5.4.0, in-progress