Supports Scout-derived custom agents in Opencode

[imarshallwidjaja]

Enables the creation of custom agents based on the scout-researcher base. This enhancement provides greater flexibility for specialized research tasks by allowing users to define custom scout agents with specific descriptions and skill sets.

Key changes include:

• Extends CUSTOM_AGENT_BASES to include scout-researcher, making it a valid base for custom agents.
• Updates the agent_hive.schema.json to reflect the expanded base agent options.
• Modifies default configurations and example templates to include a scout-example-template entry.
• Adjusts agent prompts (Architect, Hive (Master), Swarm) and skill documentation (parallel-exploration, dispatching-parallel-agents) to guide agents in intelligently selecting between the built-in scout-researcher and custom scout-derived agents based on their descriptions.
• Ensures correct inheritance of properties and runtime classification (subagent) for custom scout agents.
• Updates README.md documentation with examples and guidance for configuring custom scout agents.