Claim a claimable award ("incentive") for yourself in the caller's
company.

Inputs:

• award_id (string) — the BSON id of the incentive to claim. Use the
  listAwards tool with type: "claimable" to discover incentives.
• award_name (string) — alternative to award_id: the incentive's
  exact name (case-insensitive). If award_id is given it wins.
• claim_reason (string, optional) — a note explaining the claim
  (shown to approvers).
• privacy (string, optional) — one of publicly_visible, privately_visible, immediate_team.
  Only honored when the incentive allows changing privacy.

Claiming creates an approval request. Auto-approved incentives return
the created bonus immediately; incentives with an approval process
return a pending approval_request and bonus: null.

Proof attachments are not supported over MCP. If an incentive requires
proof, claim it through the web app so you can attach the artifact.

Required OAuth scope: recognition:write