feat: normalize secret input keys to UPPER_SNAKE_CASE

[devantler]

Summary

Renames all secret input keys in action definitions, test workflows, and documentation from kebab-case to UPPER_SNAKE_CASE, consistent with how secrets are referenced via ${{ secrets.SECRET_NAME }}.

Changes

Action definitions (action.yaml)

APP_PRIVATE_KEY
CODECOV_TOKEN
APP_PRIVATE_KEY
GITHUB_TOKEN
GITHUB_TOKEN
GITHUB_TOKEN

Callers (.github/workflows/)

• Updated active-release.yaml and all test-*.yaml workflows to use new key names

Documentation

• Updated all README.md input tables and usage examples
• Updated CONTRIBUTING.md naming convention guidance to distinguish secret vs non-secret inputs

[Copilot]

Pull request overview

This PR standardizes secret-related action input keys across the repository by renaming them from kebab-case to UPPER_SNAKE_CASE, and updates all internal callers and documentation accordingly.

Changes:

• Renamed secret inputs in multiple action.yaml files (e.g., github-token → GITHUB_TOKEN, app-private-key → APP_PRIVATE_KEY, codecov-token → CODECOV_TOKEN).
• Updated .github/workflows/* callers (test workflows + release workflow) to pass the new input keys.
• Updated action READMEs and CONTRIBUTING.md to document the new convention (kebab-case for non-secret inputs, UPPER_SNAKE_CASE for secret inputs).

Reviewed changes

Copilot reviewed 20 out of 20 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
upsert-issue/README.md	Updates documented token input name to GITHUB_TOKEN.
upsert-issue/action.yaml	Renames token input key and updates inputs.* references.
setup-go-toolchain/README.md	Updates documented token input name to GITHUB_TOKEN and usage examples.
setup-go-toolchain/action.yaml	Renames token input key and updates step if / env references.
run-dotnet-tests/README.md	Renames secret inputs in docs/examples to APP_PRIVATE_KEY, GITHUB_TOKEN, CODECOV_TOKEN.
run-dotnet-tests/action.yaml	Renames secret inputs and updates all inputs.* references in steps/conditions.
login-to-ghcr/README.md	Updates documented token input name to GITHUB_TOKEN and usage example.
login-to-ghcr/action.yaml	Renames token input key and updates inputs.* reference.
create-issues-from-todos/README.md	Updates documented app private key input name to APP_PRIVATE_KEY.
create-issues-from-todos/action.yaml	Renames app private key input key and updates inputs.* reference.
CONTRIBUTING.md	Documents the new split convention: kebab-case for non-secret vs UPPER_SNAKE_CASE for secret inputs.
approve-pr/README.md	Updates documented app private key input name to APP_PRIVATE_KEY.
approve-pr/action.yaml	Renames app private key input key and updates inputs.* reference.
.github/workflows/test-upsert-issue.yaml	Updates caller to pass GITHUB_TOKEN.
.github/workflows/test-setup-go-toolchain.yaml	Updates caller to pass GITHUB_TOKEN.
.github/workflows/test-run-dotnet-tests.yaml	Updates caller to pass APP_PRIVATE_KEY and GITHUB_TOKEN.
.github/workflows/test-login-to-ghcr.yaml	Updates caller to pass GITHUB_TOKEN.
.github/workflows/test-create-issues-from-todos.yaml	Updates caller to pass APP_PRIVATE_KEY.
.github/workflows/test-approve-pr.yaml	Updates caller to pass APP_PRIVATE_KEY.
.github/workflows/active-release.yaml	Updates reusable workflow secret key to APP_PRIVATE_KEY.

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[Copilot]

On Windows, get_coverage_files is skipped (only get_coverage_files_windows runs), but the Codecov upload still references steps.get_coverage_files.outputs.COVERAGE_FILES. This will be empty/undefined on Windows and can cause missing uploads or failures. Consider unifying both steps under a single id, or selecting the correct output based on matrix.os (e.g., prefer the Windows step output when running on Windows).

Suggested change

	files: ${{ steps.get_coverage_files.outputs.COVERAGE_FILES }}
	files: ${{ matrix.os == 'windows-latest' && steps.get_coverage_files_windows.outputs.COVERAGE_FILES || steps.get_coverage_files.outputs.COVERAGE_FILES }}

[botantler-1]

🎉 This PR is included in version 2.1.0 🎉

The release is available on GitHub release

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