DiscussionBridge for WordPress 0.2.0-alpha.31

Alpha.31 preserves the existing WordPress publication date while synchronizing an authorized From Discourse post. This prevents date-based permalinks from drifting after a content update or verified publication URL migration. It retains the same mapped post/resource/topic identity and fails closed if WordPress still cannot produce the authorized URL. Validation: 26/26 local PHP tests, syntax checks, source-to-package member parity with Alpha.30. The WordPress sandbox still requires date restoration, installation, and a human retry before this specific gate can be called complete.