[Deprecation] `file { content => <checksum> }` Filebucket Retrieval Behavior

[silug]

Summary

Using checksum literals in file resource content is deprecated and explicitly marked for future removal.

Evidence

• lib/puppet/type/file/content.rb:55 warns checksum-in-content usage is deprecated.
• lib/puppet/type/file/content.rb:57 states checksum retrieval through content will be removed.
• Guidance in warning points to static catalogs as replacement.

Proposed OpenVox 9 Change

• Remove checksum-special-case behavior in content munge path.
• Treat checksum-like strings as literal file content unless explicit supported mechanism is used.

Compatibility / Risk

• Medium risk for manifests relying on this legacy filebucket shortcut.
• Clear migration needed to static catalogs / explicit source workflows.

Implementation Notes

• Delete checksum detection branch tied to deprecated behavior.
• Keep behavior explicit and unsurprising for literal strings.
• Update docs/examples if any still mention checksum-in-content patterns.

Acceptance Criteria

• content no longer performs implicit filebucket retrieval from checksum literals.
• Deprecation warning path removed.
• Existing supported source and static-catalog flows are unaffected.

Suggested Tests

• Unit tests for content munge with checksum-like strings now expecting literal handling.
• Integration test confirming recommended replacement paths still work.

[jay7x]

My +100 here, it's highly confusing "feature"

[binford2k]

reported in #169
resolved in #170

[binford2k]

Deprecated in 4b574f0