v8.0.0

[8.0.0] - 2026-08-18

One evidence record, a thinner run loop, and a freeze on further declarations.

• Session v5 schema: plan.gate and plan.externalEvidence are removed.
  Plans declare evidence: exactly one scope: "gate" command plus extra
  observations this host may be unable to produce. Satisfaction is one
  function. Finish or close active sessions before upgrading. There is no
  dual reader.
• /flow-run is a route table. Worker waves load only after a feature run
  starts. Compact flow_status no longer carries process-local auto-drive
  timing.
• A new required-at-save evidence field is a major. Do not add another
  declaration to close a measured cheat.

Install or update:

opencode plugin opencode-plugin-flow@8.0.0 --global --force