Use this checklist after installing into your real ~/.copilot profile.

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Runtime checks

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Copilot CLI

  • /env shows the goal-system extension or plugin surface.
  • /skills info goal shows the goal skill.
  • Starting /goal <real task> creates a persisted goal instead of only acknowledging the skill.
  • goal_system_status shows the same goal ID after a new prompt in the same session.
  • A subagent receives main-session-only boundary text and cannot use goal tools.
  • After five non-goal tool calls without goal_system_update, a sixth non-goal tool is denied.
  • Trying to stop with an open goal is blocked by the hook.
  • goal_system_close refuses complete when required evidence is missing.
  • goal_system_close accepts complete only after inspection, resolution, verification, coverage, no remaining work, no blockers, and completion audit are recorded.

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VS Code Copilot Chat

  • MCP: List Servers shows goalSystem.
  • MCP: Reset Cached Tools refreshes the goal_system_* tools after install or update.
  • The Goal System custom agent appears in Copilot Chat.
  • The GitHub Copilot Chat Hooks output channel shows goal hooks running.
  • Starting /goal <real task> through the Goal System custom agent creates a persisted goal with the injected sessionId and cwd.
  • Asking to continue a single same-directory active goal in a fresh VS Code Chat session loads that persisted goal instead of starting from memory.
  • Stop blocks while an open goal remains active.
  • SubagentStart gives subagents the boundary text without full goal details.

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Fixture prompt

Run this inside Copilot after install: 
@tests/prompts/goal-system-reliability-e2e.md
The fixture project has a real failing test. The live session should inspect it, run the test, fix it, rerun it, update the persisted goal, and close only after proof exists.

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Known limits

Local tests cannot prove a specific Copilot CLI or VS Code build invokes every documented hook. Verify /env, MCP server registration, hook output, and one real /goal session after installing.