[kvlonge]

Why

The first dead-code pass left a serial Python-node scheduler reachable only from tests, redundant cursor diagnostic fields and private constants hidden from name-based detection by live names in other modules.

Changes

• Remove the test-only scheduler, dependency helpers and result wrapper; preserve behavioral tests against the production ready-node entry point.
• Remove 52 unused private compiler/CLI constants and orphaned imports.
• Use the existing cursor-input key directly instead of carrying two identical field-name strings.
• Keep distinct cursor-role mappings, public interfaces and compatibility behavior intact.

Verification

• 324 focused executor, planner, compiler/discovery and CLI-output tests passed.
• Tracked-file reference checks, Ruff, ty and fensu checks.
• Exact static CI gate and independent read-only review before delivery.