Expand TopicGate Agent Plugin Compatibility

[Dumdart]

Summary

Extend TopicGate’s plugin packaging and documentation beyond Codex to support Claude Code, GitHub Copilot, and Cursor. Add portable Agent Plugins 1.0 manifests and host-specific installation guidance while preserving read-only defaults.

Changes

Bug Fixes

• None.

Features

• Add Claude Code marketplace metadata and plugin configuration.
• Add portable Agent Plugins 1.0 manifests for GitHub Copilot and Cursor.
• Add installation guides for Codex, Claude Code, GitHub Copilot, and Cursor.
• Add contract tests covering the new plugin formats and marketplace metadata.

Refactoring

• Generalize plugin skill and scenario wording from Codex-specific to agent-host-neutral terminology.
• Document separate, explicit control-mode configuration for trusted environments.

Improvements

• Update the README with consolidated agent setup guidance and validation status.

Testing

• Added repository contract tests for Claude Code and portable Agent Plugins 1.0 packaging.

[Dumdart]

needs cloude code integration testing