Report a customer review of a business you manage into Loppee's moderation queue for a claimed policy violation (spam, harassment, off_topic, fake, or other). IMPORTANT: reporting NEVER removes the review — the review stays published, moderation is HUMAN and REACTIVE, and a moderator removes a review only for a recorded policy violation, never for being negative. Do not use this tool to suppress honest criticism; use respond_to_review to answer it publicly. Filing a report never changes the verification class, review authority, the review's weighting, or recommendation order. Requires allowed_actions include report_review. Requires an owner-scoped management key, explicit business scope, and the tool's permission; exposure tier does not grant or remove access. Under v3, a business owner connects an external agent they already use. Loppee provides scoped API and MCP access only; it does not provide or host that customer-connected agent. Access is available at no charge for now. Call get_agent_identity first. Reportability rules: only a NEGATIVE review (rating 3 stars and below) can be reported at all — a 4-5 star review returns review_report_not_negative; only ONE report may be open at a time — while a prior report is being reviewed a new one returns review_report_already_open; and a review accepts at most 3 reports in its LIFETIME — past that the call returns review_report_limit_reached. Returns review_not_found when the review does not belong to this business and invalid_report_reason for an unknown category.