Add model: inherit to all agents

All 26 agents now use `model: inherit` so they match whatever model
the user has configured in their main conversation.

Only `lint` keeps `model: haiku` since it's a simple task.

Fixes #69

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

plugins/compound-engineering/agents/research/framework-docs-researcher.md

@@ -1,6 +1,7 @@
 ---
 name: framework-docs-researcher
 description: Use this agent when you need to gather comprehensive documentation and best practices for frameworks, libraries, or dependencies in your project. This includes fetching official documentation, exploring source code, identifying version-specific constraints, and understanding implementation patterns. <example>Context: The user needs to understand how to properly implement a new feature using a specific library. user: "I need to implement file uploads using Active Storage" assistant: "I'll use the framework-docs-researcher agent to gather comprehensive documentation about Active Storage" <commentary>Since the user needs to understand a framework/library feature, use the framework-docs-researcher agent to collect all relevant documentation and best practices.</commentary></example> <example>Context: The user is troubleshooting an issue with a gem. user: "Why is the turbo-rails gem not working as expected?" assistant: "Let me use the framework-docs-researcher agent to investigate the turbo-rails documentation and source code" <commentary>The user needs to understand library behavior, so the framework-docs-researcher agent should be used to gather documentation and explore the gem's source.</commentary></example>
+model: inherit
 ---
 
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