chore(docs): Update Copilot Instructions and AGENTS.md

[andreyvelich]

Update Copilot instructions similar to Trainer: kubeflow/trainer#3121

Also, I updated AGENTS.md to make the context clearer.
Fixes: #190
Fixes: #189

cc @kubeflow/kubeflow-sdk-team

[coveralls]

Pull Request Test Coverage Report for Build 21383527272

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 67.52%

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Totals
Change from base Build 21379335186:	0.0%
Covered Lines:	2769
Relevant Lines:	4101

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💛 - Coveralls

[Copilot]

Pull request overview

This PR updates the Copilot instructions and AGENTS.md documentation to provide clearer context for AI agents and contributors. The changes streamline the documentation by removing verbose examples and sections while adding a more detailed repository map that includes the optimizer and hub components.

Changes:

• Added comprehensive repository map showing the structure of trainer, optimizer, and hub components
• Replaced simple Copilot instructions with detailed code review guidelines and philosophy
• Removed extensive test examples and architectural improvement sections to make the documentation more concise

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
AGENTS.md	Expanded repository map to include detailed structure of trainer, optimizer, and hub components; removed verbose examples and checklists to streamline the documentation
.github/copilot-instructions.md	Replaced minimal instructions with comprehensive code review guidelines including review philosophy, priority areas, CI context, and response format guidance

[Copilot]

The repository map lists "utils/" as a directory under kubeflow/trainer/, but this directory does not exist in the actual codebase. The trainer module contains api/, backends/, constants/, options/, test/, and types/ directories, but no standalone utils/ directory. Utils modules exist within individual backend subdirectories (e.g., kubeflow/trainer/backends/kubernetes/utils.py), but there is no top-level utils/ directory under trainer/.

Suggested change

	│ ├── options/ # Backend configuration options (KubernetesOptions, etc.)
	│ └── utils/ # Common utils
	│ └── options/ # Backend configuration options (KubernetesOptions, etc.)

[Copilot]

The documentation mentions "black, prettier" as the formatters, but the project actually uses ruff for both linting and formatting. According to pyproject.toml line 63 and .pre-commit-config.yaml lines 14-17, the project uses ruff-check and ruff-format, not black or prettier. This should be updated to accurately reflect the tools used in this codebase.

Suggested change

	- **Style/formatting** - CI handles this (black, prettier)
	- **Style/formatting** - CI handles this (ruff-check, ruff-format)

[andreyvelich]

@kramaranya @astefanutti @Shekharrajak Please can you check this PR, so we get better reviews from Copilot like we have in Trainer?

[astefanutti]

Thanks @andreyvelich!

/lgtm
/approve

[google-oss-prow]

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