implement scheduler state converters for V1/V2 #9058
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Add bi-directional migration between legacy (workflow-powered) and CHASM scheduler states. This core migration logic will be used by automatic migration and manual tooling. - Create chasm/lib/scheduler/migration package with LegacyToCHASM and CHASMToLegacy conversion functions - Create common/scheduler package for shared ID generation (following the common/nexus pattern) - Handle BufferedStart field population/dropping between versions - Preserve backfill progress during migration - Convert LastCompletionResult between Payloads (legacy) and Payload (CHASM)
…edStarts unification - Add LegacyToCHASM and CHASMToLegacy conversion functions - Adapt to PR temporalio#8980: RunningWorkflows/RecentActions now stored in BufferedStarts - V1→V2: Convert RunningWorkflows/RecentActions to BufferedStarts with RunId/Completed fields - V2→V1: Extract RunningWorkflows/RecentActions from BufferedStarts - Centralize ID generation in common/schedules package (GenerateBackfillerID) - Preserve all state: spec, metadata, execution history, active workflows, backfills - Handle direction-specific transformations for buffered starts and backfill progress - Comprehensive test coverage for state preservation and round-trips
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What changed?
Added bidirectional migration logic to convert scheduler state between V1 (legacy workflow-based) and V2 (CHASM component-based) architectures.
Key changes:
LegacyToCHASM()andCHASMToLegacy()conversion functions inchasm/lib/scheduler/migration/common/schedules/package for use across legacy, CHASM, and migration code