subagenttasks

Flywheel: /api/changes polling feeds on contracts/tasks/memories (stage 5)

DONE 2026-07-02: GET /api/changes live on subagentcontracts.com (contract_ledger), subagenttasks.com (tasks.updated_at), subagentmemories.com (memory_versions) — thin newest-first {type, ref, at, cite_as} events, cursor+limit verified (page-2 strictly older than cursor; cursor must be URL-encoded, it contains a space). llms.txt lines added; subagentapi.com catalog advertises all three (version 838c624e); scripts/flywheel-metrics.sh now reports per-feed freshness (contracts 2026-07-01 20:55, tasks 2026-07-02 19:09, memories 2026-07-02 01:54).