[waleedlatif1]

Summary

• build-workflow now warns that remembered block ids are often the legacy version (table vs table_v2, router vs router_v2)
• Never add or switch to a block whose blocks get detail carries sunset; build with its sunset.replacedBy
• An existing sunset block is preserved, and its replacement is named to the user
• Companion to fix(workflows): refuse new placements of sunset blocks in workflow edits sim#9456, which makes Sim refuse new sunset blocks server-side

Testing

• bun scripts/validate-skills.ts