docs: sync documentation with current codebase state

[nanotaboada]

Summary

• README.md: update Features wording from "Copilot instructions"
  to "agent-optimized documentation" (Claude Code + GitHub Copilot)
• CONTRIBUTING.md: add uv run prefix to lint commands; expand
  commit types to include docs, test, refactor, ci, perf
• CHANGELOG.md: fix [unreleased] diff link (was pointing to
  v1.1.0-bielsa, now correctly points to v2.0.0-capello); add
  missing [2.0.0 - Capello] footer comparison link
• .coderabbit.yaml: fix Pydantic v1 Config.alias_generator
  syntax to v2 ConfigDict(alias_generator=...); remove inaccurate
  async test functions claim; add ci and perf to commit types

Test plan

• Verify CHANGELOG footer links resolve correctly on GitHub
• Verify .coderabbit.yaml renders without schema errors

🤖 Generated with Claude Code

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This change is 

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 9be45dab-08e3-4f71-84bd-6fee1a80c3b5

📥 Commits

Reviewing files that changed from the base of the PR and between 939a91f and 6c48f11.

📒 Files selected for processing (4)

• .coderabbit.yaml
• CHANGELOG.md
• CONTRIBUTING.md
• README.md

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/sync-docs-with-codebase

• 🛠️ sync documentation: Commit on current branch
• 🛠️ sync documentation: Create PR
• 🛠️ enforce http error handling: Commit on current branch
• 🛠️ enforce http error handling: Create PR
• 🛠️ idiomatic review: Commit on current branch
• 🛠️ idiomatic review: Create PR
• 🛠️ verify api contract: Commit on current branch
• 🛠️ verify api contract: Create PR

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[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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (939a91f) to head (6c48f11).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #534   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          113       113           
=========================================
  Hits           113       113           

Components	Coverage Δ
Services	100.00% <ø> (ø)
Routes	100.00% <ø> (ø)

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