Nested agents load ALL copilot-instructions.md, not just the ones at the nested level

[Rykarix]

Describe the bug

This feature was added: #1655

However, whilst nested agents are now dispalyed, they read the copilot-instructions.md at ALL levels.

This is not expected behavior because it should be assumed that nested folders are sub-projects / workspaces in their own right

Solutions:

• Default to only read the copilot-instructions.md at the same level in a nested hierarchy
• Add a boolean setting to turn this behavior on / off as needed, defaulted to off

Affected version

No response

Steps to reproduce the behavior

create:

• .github/copilot-instructions.md
• nested_folder/.github/agents/test-agent.md
• nested_folder/.github/copilot-instructions.md

ask the test-agent.md to link the absolute path to all of the instructions in its context window & memory and it will link both:

Expected behavior

it should be assumed that nested folders are sub-projects / workspaces in their own right. therefore it shouldn't be loading in content that's outside the view and/or control of the hierarchy

Additional context

No response

[Rykarix]

This might be related to workspaces:
You may also need to create a *.code-workspace like:

{
	"folders": [
		{
			"path": "."
		},
		{
			"path": ".."
		}
	],
	"settings": {}
}

Workspaces are a tool for user convenience. If behavior is coupled to a user convenience feature, it should be decoupled and a setting provided for user to control behavior