feat: add Gem Team Multi-Agent Orchestration plugin with detailed documentation and agent definitions

plugins/gem-team/.github/plugin/plugin.json

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+{
+  "name": "gem-team",
+  "description": "A modular multi-agent team for complex project execution with DAG-based planning, parallel execution, TDD verification, and automated testing.",
+  "version": "1.0.0",
+  "author": {
+    "name": "Awesome Copilot Community"
+  },
+  "repository": "https://github.com/github/awesome-copilot",
+  "license": "MIT"
+}

plugins/gem-team/README.md

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+# Gem Team Multi-Agent Orchestration Plugin
+
+A modular multi-agent team for complex project execution with DAG-based planning, parallel execution, TDD verification, and automated testing.
+
+## Installation
+
+```bash
+# Using Copilot CLI
+copilot plugin install gem-team@awesome-copilot
+```
+
+## What's Included
+
+### Agents
+
+| Agent | Description |
+|-------|-------------|
+| `gem-orchestrator` | Coordinates multi-agent workflows, delegates tasks, synthesizes results via runSubagent |
+| `gem-researcher` | Research specialist: gathers codebase context, identifies relevant files/patterns, returns structured findings |
+| `gem-planner` | Creates DAG-based plans with pre-mortem analysis and task decomposition from research findings |
+| `gem-implementer` | Executes TDD code changes, ensures verification, maintains quality |
+| `gem-chrome-tester` | Automates browser testing, UI/UX validation via Chrome DevTools |
+| `gem-devops` | Manages containers, CI/CD pipelines, and infrastructure deployment |
+| `gem-reviewer` | Security gatekeeper for critical tasks—OWASP, secrets, compliance |
+| `gem-documentation-writer` | Generates technical docs, diagrams, maintains code-documentation parity |
+
+## Source
+
+This plugin is part of [Awesome Copilot](https://github.com/github/awesome-copilot), a community-driven collection of GitHub Copilot extensions.
+
+## License
+
+MIT

plugins/gem-team/agents/gem-chrome-tester.md

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+../../../agents/gem-chrome-tester.agent.md

plugins/gem-team/agents/gem-devops.md

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+../../../agents/gem-devops.agent.md

plugins/gem-team/agents/gem-documentation-writer.md

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+../../../agents/gem-documentation-writer.agent.md

plugins/gem-team/agents/gem-implementer.md

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+../../../agents/gem-implementer.agent.md

plugins/gem-team/agents/gem-orchestrator.md

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+../../../agents/gem-orchestrator.agent.md

plugins/gem-team/agents/gem-planner.md

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+../../../agents/gem-planner.agent.md

plugins/gem-team/agents/gem-researcher.md

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+../../../agents/gem-researcher.agent.md

plugins/gem-team/agents/gem-reviewer.md

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+../../../agents/gem-reviewer.agent.md