GTM API / Search LinkedIn account block log

List per-target block observations for the team: one permanently-deduplicated row per (account, target) whenever a target profile blocked one of our accounts (established by the §5.6 check-target-block). Use for: "did target X block any of our accounts" (filter target_ln_member_id, no account filter → crosses the team), churn caused by blocks (include linkedin_connection), a hostile-segment trend (created_at window + total_count), reverse-lookup from a failed activity_log row or a soft-deleted connection. NOT for platform-wide locks (weekly cap / InMail rate-limit → linkedin-account-quota-hits) or raw plugin error text (linkedin-account-activity-log). No q; target_nickname is exact-match. Sort: created_at (default desc). include[]: linkedin_account, linkedin_account_activity_log, linkedin_connection. Contract: - MCP tool search_linkedin_account_block_log, registry package mcp.linkedin/linkedin_account_block_log, mount linkedin.account-monitor. - Operation search, response envelope search. - Flags: read only.