docs(wiki): synchronize the 0.9.2 consumer contract Document category push preferences, Android channels and safe upgrades. - Preserve version-specific validation limits - Add migration rollback and client verification guidance - Require wiki publication before package pushes
docs(wiki): document notification lifecycle and integration Provide public-facing implementation and operational guidance. - Cover APIs, schema, security, concurrency, queues and Flutter - Include the package logo and explicit real-device verification limits