Enhance context summarization with standardized templates and configuration

Overview

This PR standardizes the context summarization system by implementing a template-based approach across agents and centralizing configuration in the default settings.

Purpose

These changes improve consistency in how summarization is handled throughout the Forge system and extend summarization capabilities to the software-engineer agent, ensuring a more uniform experience when context summarization is triggered.

Implementation

The implementation makes three key changes:

1. Updates the default prompt in the template service to use the system-prompt-context-summarizer.hbs template instead of an inline template
2. Moves the compact summarization configuration from forge.yaml to forge.default.yaml and applies it to the software-engineer agent
3. Fixes minor formatting issues in the YAML configuration for the git-commit agent

The template service now references an external Handlebars template file (system-prompt-context-summarizer.hbs), which provides a comprehensive framework for context summarization. This ensures all agents using this capability will have consistent, well-structured summarization output.

Testing

Changes have been tested to ensure:

• The template service correctly renders the context summarizer template
• The software-engineer agent properly loads its compact configuration
• The system maintains backward compatibility with existing agent configurations

Related Issues

N/A

Changelog

Added

• Compact configuration for software-engineer agent with parameters for token threshold, summarization window, and model settings

Changed

• Updated template.rs to use the standardized system-prompt-context-summarizer.hbs template
• Moved compact summarization configuration from forge.yaml to forge.default.yaml
• Fixed indentation in YAML configuration for git-commit agent

Suggested Reviewers

• Team members familiar with the template service implementation
• Anyone responsible for agent configuration standards and maintenance