feat: Create release on push

[sator-imaging]

This PR solves the problem that the email is not sent even if "Watch" is set to "All Activity", by creating release on push to "archives" folder.

[sator-imaging]

I am now trying to add link to the release page.

[sator-imaging]

Test result (file was deleted for PR): https://github.com/sator-imaging/PRDigest.NET/releases/tag/archives-20260214

[Copilot]

Pull request overview

This PR introduces a GitHub Actions workflow that automatically creates releases when markdown files are pushed to the archives directory. The purpose is to enable email notifications for users watching the repository with "All Activity" enabled, which doesn't happen with regular commits.

Changes:

• Added a new workflow that triggers on pushes to archives/**/*.md files
• Generates date-based tags and creates GitHub releases with links to the changed archive files

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[Copilot]

Using 'head -n 1' means only the first changed file is included in the release, but if multiple archive files are pushed in a single commit, the other files will be ignored. This could lead to incomplete notifications. Consider either: 1) Creating separate releases for each changed file, 2) Including all changed files in the release notes, or 3) Failing the workflow if multiple files are detected to enforce one file per commit.

Suggested change

	FILE=$(git diff-tree --no-commit-id --name-only -r HEAD | grep "^archives/.*$" | head -n 1)
	if [ -z "$FILE" ]; then
	echo "Error: No archives changes detected"
	exit 1
	fi
	FILES=$(git diff-tree --no-commit-id --name-only -r HEAD | grep "^archives/.*$" || true)
	if [ -z "$FILES" ]; then
	echo "Error: No archives changes detected"
	exit 1
	fi
	FILE_COUNT=$(printf '%s\n' "$FILES" | wc -l)
	if [ "$FILE_COUNT" -ne 1 ]; then
	echo "Error: Expected exactly one changed archive file, but found $FILE_COUNT:"
	printf '%s\n' "$FILES"
	exit 1
	fi
	FILE="$FILES"

[prozolic]

@sator-imaging Thank you! Looks good, I'll merge this.