chore(chaining): add AI context for chaining engine (#4824)

[savacano28]

Proposed changes

• Add context for chaining feature

Testing Instructions

1. Modify chaining code base and check if the context is apply in development or review.

Related issues

• related feat(chaining): basic Chaining Engine  #4824

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[Filigran-Automation]

🤖 [AI-generated]

Hey @savacano28! 👋 Thanks a lot for opening PR #6473 — really appreciate you adding AI context for the chaining engine! 🙏

I just had a quick look and I think the description could be enhanced a little to help reviewers get through it faster. I haven't changed anything in your description — just a gentle, optional suggestion:

Area	What could help	Suggestion
### Proposed changes	Currently empty (two blank bullets)	A line or two on what you're adding (the chaining-reviewer agent, chaining-engine instructions, and review skill) and why
### Testing Instructions	Still the template placeholder	A quick note on how a reviewer can verify the new agent/instructions/skill
### Related issues	Still Closes #ISSUE-NUMBER	Link the related issue, e.g. Closes #1234 — every PR is expected to be linked to an issue, and the reference is also needed on the PR title

💡 If helpful, the contribution conventions and the PR template walk through what to include.

No rush at all — thanks again for contributing to OpenAEV! 🚀

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 44.22%. Comparing base (7c430ba) to head (b9b6ea7).

❌ Your project check has failed because the head coverage (2.88%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6473      +/-   ##
============================================
- Coverage     44.23%   44.22%   -0.01%     
- Complexity     7419     7421       +2     
============================================
  Files          2310     2310              
  Lines         63855    63855              
  Branches       8496     8496              
============================================
- Hits          28244    28242       -2     
- Misses        33809    33812       +3     
+ Partials       1802     1801       -1     

Flag	Coverage Δ
backend	66.73% <ø> (+0.01%)	⬆️
e2e	18.78% <ø> (-0.28%)	⬇️
frontend	2.88% <ø> (ø)

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[Copilot]

Pull request overview

This PR adds GitHub Copilot guidance for OpenAEV’s Chaining Engine by introducing dedicated instructions, a review skill, and a specialized reviewer agent, and wiring them into the existing Copilot/agent indexes.

Changes:

• Add a new Chaining Engine instruction file (.github/instructions/chaining-engine.instructions.md) with architecture notes, invariants, and anti-patterns.
• Add a new review skill (.github/skills/review-chaining-engine/SKILL.md) and a dedicated agent definition (.github/agents/chaining-engine-reviewer.agent.md).
• Update AGENTS.md and .github/instructions/code-review.instructions.md to reference the new Chaining Engine guidance.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
AGENTS.md	Adds Chaining Engine to the “Where to find conventions” table, adds the new skill/agent routing entry, and includes a minor formatting change.
.github/skills/review-chaining-engine/SKILL.md	New step-by-step review checklist and guidance for modifying/reviewing chaining engine code.
.github/instructions/code-review.instructions.md	Adds a Chaining Engine section linking to the new instructions/skill/agent.
.github/instructions/chaining-engine.instructions.md	New Copilot instruction set for chaining engine code paths (API/service/model/scheduler/frontend).
.github/agents/chaining-engine-reviewer.agent.md	New specialized agent definition for chaining engine reviews.