21. Deferred (owned by other components)

Two open design questions are deferred to other components per CAMPAIGN.md. The spec carries the format invariants; the owning component carries the parameters.

21.1 FastCDC parameters and minimum drop size (design §16.2)

Owner: 04-writer-pipeline. The manifest’s parameter section carries chunking parameters (min/avg/max sizes, gear table ID); the format itself is parameter-agnostic — DropRecord (§3.3) records plaintext_len per drop without assuming a chunking policy. 04 chooses specific defaults with benchmarks; once chosen, this spec records them as a referenced parameter set in §3.

21.2 Time-lock puzzle calibration (design §16.3)

Owner: 05-crypto. v0.1 ships Shamir k-of-n escrow only (§5.7 for the wire format). Time-lock puzzle code MUST NOT land until this spec defines parameter selection and a Wesolowski/Pietrzak proof-of-elapsed-time scheme. The dms-time-lock feature flag (§14) is registered as optional and default-off; flipping it to standard requires a spec amendment.