Shell Economics And Supplemental Path

Current Economics Reality

Under current relay/policy and tx footprint:

• continuation reserve can be insufficient for repeated no-spend-time-top-up continuation
• one no-spend-time-top-up hop is live-valid when reserve is sufficiently pre-positioned
• repeated no-top-up mode remains reserve-limited

Interim Practical Path

When reserve is insufficient, wallet can use explicit supplemental transparent BCH funding.

This path must remain:

• explicit
• separately classified in artifacts
• never mislabeled as hidden transfer semantics

Artifact Separation Requirements

Artifacts should keep these fields separate:

• protocolAuthoritySourceOutpointRef
• shellCarrierSats
• minerFeeSats
• supplementalFundingUsed
• supplementalFundingInputSats
• supplementalFundingChangeSats

Deferred Work

Not solved in this wallet lane today:

• private reserve replenishment inside direct spend
• sustained repeated no-top-up continuation as normal mode

These remain unresolved direct-spend constraints prior to any later aggregation-layer improvements.