docs: standardize implementation section titles

[Rel1cx]

• Capitalize 'Rule source' to 'Rule Source' in documentation
• Capitalize 'Test source' to 'Test Source' in documentation
• Remove outdated nx.instructions.md file
• Update vscode settings

What kind of change does this PR introduce?

• Bugfix
• Feature
• Docs
• Test
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• I have added a convincing reason for adding this feature, if necessary

Other information

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Project	Deployment	Preview	Comments	Updated (UTC)
eslint-react	Building	Preview	Comment	Aug 20, 2025 8:11pm

[Copilot]

Pull Request Overview

This PR standardizes the capitalization of implementation section titles across all documentation files. It changes "Rule source" to "Rule Source" and "Test source" to "Test Source" to maintain consistency in documentation formatting. Additionally, it removes an outdated nx.instructions.md file and updates VS Code settings.

• Standardized capitalization of "Rule Source" and "Test Source" in implementation sections
• Removed outdated GitHub instructions file for Nx
• Updated VS Code settings to disable NX Console AI agent rules

Reviewed Changes

Copilot reviewed 108 out of 108 changed files in this pull request and generated no comments.

File	Description
Multiple *.md files	Updated "Rule source" to "Rule Source" and "Test source" to "Test Source"
.github/instructions/nx.instructions.md	Removed outdated file
.vscode/settings.json	Updated NX Console setting

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