ci: docs-only fast path (skip heavy jobs)

[zensgit]

No description provided.

[gemini-code-assist]

Note

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[Copilot]

Pull Request Overview

This PR implements a CI optimization that detects documentation-only changes and skips heavy build/test jobs when only docs have been modified. The changes add path filtering to identify docs-only PRs and conditionally execute resource-intensive CI steps.

Key changes:

• Added a changes job that uses path filtering to detect docs-only modifications
• Modified existing CI jobs to skip execution when only documentation files are changed
• Added conditional execution using if: env.DOCS_ONLY != 'true' to resource-intensive steps

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[Copilot]

The code filter pattern !**/*.md will not properly detect code changes when markdown files are modified alongside code files. The paths-filter action requires at least one positive pattern for each filter. Consider adding explicit code patterns like - '**/*.rs', - '**/*.dart', etc., or use - '**' as the first pattern followed by exclusions.

Suggested change

	code:
	code:
	- '**'

[Copilot]

The pattern .github/*.md only matches markdown files directly in the .github directory, but not in subdirectories. Consider using .github/**/*.md to include markdown files in subdirectories like .github/workflows/ or other nested folders.

Suggested change

	- '.github/*.md'
	- '.github/**/*.md'