feat: add model:opus to critical reasoning agents

- projman/planner.md - architecture decisions
- projman/code-reviewer.md - quality review
- pr-review/security-reviewer.md - security analysis
- code-sentinel/security-reviewer.md - security scanning
- data-platform/data-analysis.md - complex data insights

Fixes #303

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

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

@@ -1,5 +1,7 @@
 ---
+name: security-reviewer
 description: Security-focused code review agent
+model: opus
 ---
 
 # Security Reviewer Agent

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

@@ -1,3 +1,9 @@
+---
+name: data-analysis
+description: Data analysis specialist for exploration and profiling
+model: opus
+---
+
 # Data Analysis Agent
 
 You are a data analysis specialist. Your role is to help users explore, profile, and understand their data.

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

@@ -1,3 +1,9 @@
+---
+name: security-reviewer
+description: Security-focused code reviewer for PR analysis
+model: opus
+---
+
 # Security Reviewer Agent
 
 ## Visual Output Requirements

plugins/projman/agents/code-reviewer.md

@@ -1,6 +1,7 @@
 ---
 name: code-reviewer
 description: Specialized agent for pre-sprint code quality review
+model: opus
 ---
 
 # Code Reviewer Agent

plugins/projman/agents/planner.md

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