ephraimduncan b076a70d98 docs(api): document cancel endpoint and fix get-many body shape ...

- add Cancel Document section: PENDING-only, not idempotent, access rules, webhook and emails
- replace fabricated envelopeIds get-many body with the real nested ids selector (max 20)
- document the data wrapper and silent filtering of inaccessible IDs
- add CANCELLED to status table, state diagram, transitions and filters
- replace nonexistent API source value with the real enum; fix pagination shape and fences
- warn in migration guide that get-many body shape changed from documentIds

2026-07-30 22:04:00 +00:00

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docs

docs(api): document cancel endpoint and fix get-many body shape

2026-07-30 22:04:00 +00:00