docs(copilot): unify instructions as canonical single-file format

[nanotaboada]

Consolidate .github/copilot-instructions.md and AGENTS.md into a single always-on file with a consistent section order (Overview, Tech Stack, Structure, Coding Guidelines, Commands, Agent Mode).

• Replace two-file system with one canonical copilot-instructions.md
• Absorb AGENTS.md content (autonomy levels, workflows) into Agent Mode

Summary by CodeRabbit

• Documentation
  • Restructured development guidance documentation with reorganized sections, expanded technical stack details, and refined workflow procedures for development operations.
  • Removed a comprehensive operational documentation file, consolidating essential guidance into the primary instruction resource.

[coderabbitai]

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Walkthrough

This pull request restructures the Copilot instructions documentation file by reorganizing sections, expanding guidance on workflows and conventions, and deletes the AGENTS.md file entirely, removing centralized developer-facing operational instructions.

Changes

Cohort / File(s)	Summary
Documentation Restructuring .github/copilot-instructions.md	Complete rewrite reorganizing sections from Core Conventions to Structure, Coding Guidelines, and Commands; expands Tech Stack details; introduces Quick Start, Pre-commit Checks, Commits, Agent Mode, and Key workflows subsections; replaces bullet lists with labeled sections and code blocks; shifts terminology and formatting (e.g., "Copilot Should" to "Coding Guidelines").
Documentation Removal AGENTS.md	Entire file deleted, eliminating comprehensive developer documentation covering .NET version, development workflow, database management, Docker workflow, CI/CD pipelines, project architecture, configuration examples, API endpoints, troubleshooting guidance, and conventions (CHANGELOG, secrets, testing, commits, caching, logging, rate limiting, package management).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

Possibly related PRs

• chore: enhance copilot instructions with architecture details #341: Both PRs modify .github/copilot-instructions.md with architectural and instruction guidance rewrites.
• docs: optimize AI agent instructions for token efficiency #361: Both PRs modify the same documentation files (.github/copilot-instructions.md and AGENTS.md) with directly opposing edits.
• docs: standardize release workflow and improve documentation quality #369: Both PRs involve changes to AGENTS.md release management and developer documentation.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title follows Conventional Commits format with 'docs:' prefix, is under 80 characters (65 chars), and accurately describes the main change: unifying two instruction files into a single canonical format.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch docs/unify-copilot-instructions

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In @.github/copilot-instructions.md:
- Line 109: The "Add an endpoint" workflow omits updating AutoMapper profiles
and repository methods; update the workflow text to include steps for
adding/updating the AutoMapper Profiles/ (e.g., create mapping for the new DTO
in Profiles/) and for adding necessary data-access logic in Repositories/ (e.g.,
add repository method(s) used by the new service), so the sequence becomes: add
DTO in Models/, update Profiles/ (AutoMapper), add repository method(s) in
Repositories/, add service method in Services/, add controller action in
Controllers/, add validator in Validators/, add tests, then run pre-commit
checks.
- Line 94: Remove the obsolete mention of azure-pipelines.yml from the CI/CD
list and update the "Add an endpoint" workflow guidance to also remind
contributors to update the AutoMapper profile (specifically the
PlayerMappingProfile class) when new DTOs or entity↔DTO mappings are introduced;
reference AutoMapper and PlayerMappingProfile so reviewers remember to add
mapping entries whenever endpoints add or change DTOs.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud