Wire claim-conflict resolution end-to-end

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Problem: The inter-miner claim-conflict adjudicator is correct and well-tested in isolation, but nothing assembles the real "competing claims" set from GitHub or calls it — a genuine duplicate claim today has no automated resolution path.

Area: AMS / Miner

Proposal: Build the missing piece: assemble the competing-claims set for a given issue from real GitHub state, and call the adjudicator against it, surfacing its decision through the CLI.

Deliverables:

• A real, callable claim-conflict-resolution path from detection through to a surfaced decision.

Acceptance criteria:

• Two simulated competing claims on the same issue are correctly adjudicated and the losing claim is handled per the adjudicator's decision.

Boundaries:

• Depends on the "wire already-built modules into the CLI" issue above for the underlying call site.

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JSO-3508