threads-uqx.6: daemon integration — classification, delayed-apply scheduler, deadline revalidation, audit in coven.sqlite3

[BunsDev]

Bead: threads-uqx.6
Phase: 5 — Approval semantics over the Phase-2 Ward
Spec: specs/PHASE-5-APPROVAL-SEMANTICS.md §1, §4, §6 decisions 1/2/6/8
Depends on: #8 (uqx.3 types), #9 (uqx.4 predicates), #10 (uqx.5 regions), #5 (ward_audit / ApplyAudit)

Scope

Wire the Phase-5 types into the daemon. This is the implementation bead for classification, delayed-apply flow, deadline revalidation, and audit appends. Cave contract amendment is downstream (threads-uqx.7).

Deliverables

• ProposalClassification assigned at proposal intake (channel, regions, tier floor, ApprovalPath)
• Delayed-apply scheduler: proposal → pending state; deadline fires revalidation; outcome is approved | vetoed | expired | rejected
• Revalidation at deadline proves evidence_replay_hash matches (WARD-C7: evidence must survive the time gap)
• Append-only audit rows in coven.sqlite3 for proposal_submitted, proposal_window_opened, proposal_approved / vetoed / expired / rejected — each close event carries explicit reason field
• Daemon load-time reject if label-variant mapping drifts (no corresponding display label → reject, not warn)
• Gate-4 fail-closed preserved: every path ends in live daemon re-materialization before apply

Constraints

• Daemon contract first. Cave ProposalView extension starts as [DESIGNED, NOT SHIPPED] until this bead has release evidence (decision 6).
• No provisional apply. Pending state is visible; daemon applies only after window closes with no veto. Rollback is not in scope (decision 2).
• min_visible on VetoWindow must be enforced: deadline cannot close before the pending proposal was visible for at least that duration.
• All audit appended here must interop with the ApplyAudit schema from issue ward_audit: add an apply-audit event type so the coven daemon can persist Gate-4 apply records #5.

Does not include

• Cave contract amendment (threads-uqx.7)
• Nova sign-off (threads-uqx.9) — that bead reviews this one's output