Sprint 15.5 — Implement post-clean verification UX

[maruson08]

Problem / motivation

Cleaning must be verified fail-closed before a result can be saved.

Scope

Run verifyMetadata immediately after cleaning, use its actual v0.1.0 success semantics, block unsafe/incomplete results, and present bounded removed/preserved/repaired and verification evidence.

Non-goals

No truthy-object shortcut, save-before-verify flow, anonymity claim, exhaustive metadata claim, malware or pixel-privacy claim.

Acceptance criteria

• Only a documented successful verification state enables writing/downloading output.
• Invalid, truncated, incomplete, fail-closed, unsafe, or thrown verification states do not save.
• Verification copy states that targeted categories were checked under supported semantics.
• Tests cover success and blocking verification paths.

[maruson08]

Completed by PR #29, merged into the v2 integration branch at 82f09e8. GitHub did not apply the closing keyword automatically because v2 is not the repository default branch.