Add `model: provider/model-id` to agent.md

Co-authored-by: darrenhinde <darrenhinde@users.noreply.github.com>

.opencode/agent/subagents/code/reviewer.md

@@ -7,6 +7,7 @@ type: subagent
 version: 2.0.0
 author: opencode
 mode: subagent
+model: anthropic/claude-sonnet-4-20250514
 temperature: 0.1
 tools:
   read: true

example-agent-configs.md

@@ -0,0 +1,114 @@
+# Example Agent Model Configurations
+
+This document shows how to configure different models for various agents in OpenCode.
+
+## Code Review Agent - High Performance Model
+
+```yaml
+---
+id: reviewer
+name: CodeReviewer
+description: "Code review, security, and quality assurance agent"
+model: anthropic/claude-sonnet-4-20250514
+temperature: 0.1
+tools:
+  read: true
+  grep: true
+  glob: true
+  bash: false
+  edit: false
+  write: false
+---
+
+# Your code review agent content here...
+```
+
+## Copywriter Agent - Creative Model
+
+```yaml
+---
+id: copywriter
+name: Copywriter
+description: "Creative content and copywriting specialist"
+model: anthropic/claude-haiku-3-20241022
+temperature: 0.7
+tools:
+  read: true
+  write: true
+  edit: true
+---
+
+# Your copywriter agent content here...
+```
+
+## Simple Tasks Agent - Cost-Effective Model
+
+```yaml
+---
+id: simple-responder
+name: Simple Responder
+description: "Simple task responder for basic operations"
+model: anthropic/claude-haiku-3-20241022
+temperature: 0.2
+tools:
+  read: true
+  bash: true
+---
+
+# Your simple responder agent content here...
+```
+
+## Context Analysis Agent - Specialized Model
+
+```yaml
+---
+id: context-manager
+name: ContextManager
+description: "Context organization and lifecycle management specialist"
+model: anthropic/claude-sonnet-4-20250514
+temperature: 0.1
+tools:
+  read: true
+  grep: true
+  glob: true
+  edit: true
+  write: true
+  bash: true
+---
+
+# Your context manager agent content here...
+```
+
+## Recommended Model Assignments
+
+- **High-precision tasks** (code review, security analysis): `anthropic/claude-sonnet-4-20250514`
+- **Creative tasks** (copywriting, content creation): `anthropic/claude-haiku-3-20241022` with higher temperature
+- **Simple tasks** (basic operations, simple queries): `anthropic/claude-haiku-3-20241022`
+- **Complex reasoning** (architecture decisions, planning): `anthropic/claude-sonnet-4-20250514`
+- **Cost-sensitive operations** (batch processing, simple automation): `anthropic/claude-haiku-3-20241022`
+
+## Temperature Guidelines
+
+- **0.0-0.2**: Very consistent, precise tasks (code analysis, security reviews)
+- **0.3-0.5**: Balanced creativity and consistency (documentation, explanations)
+- **0.6-0.8**: Creative tasks (copywriting, brainstorming)
+- **0.9-1.0**: Highly creative tasks (storytelling, creative writing)
+
+## Configuration Process
+
+1. Edit the agent's `.md` file
+2. Add `model:` parameter to the YAML frontmatter
+3. Optionally adjust `temperature:` for the task type
+4. Save the file
+5. The next time you invoke that agent, it will use the specified model
+
+## Global vs Project Configuration
+
+- **Global**: `~/.config/opencode/agents/agent-name.md`
+  - Available across all projects
+  - Good for personal preferences
+  
+- **Project**: `.opencode/agents/agent-name.md`
+  - Only available in current project
+  - Good for project-specific requirements
+  - Overrides global configuration if both exist