docs(mappers): time no longer dates detection

Eight mappers (Cortex XDR, CrowdStrike, Rapid7) still called the OCSF
`time` field "the MTTD anchor" that Riposte reads to stamp detected_at.
Riposte retired MTTD in migration 0256 and stamps detection at
ingestion for every alert; the mappings stay, as the alert's own record
of when the source saw the event. Comments only: no mapping changes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

integrations/rapid7-insightidr/mappers/get_investigations_full.yaml

@@ -67,7 +67,9 @@ ocsf:
   - { source_path: "organization_id",    ocsf_field: "cloud.org.uid" }
   - { source_path: "assignee.name",      ocsf_field: "assignee.name" }
   - { source_path: "assignee.email",     ocsf_field: "assignee.email_addr" }
-  # ── Detection time: the MTTD anchor ───────────────────────────────
+  # ── Event time (OCSF `time`) ───────────────────────────────────────
+  # Riposte no longer reads it to date detection (MTTD retired, migration 0256):
+  # it is the alert's own record of when the source saw the event.
   # Weakest first, strongest last. The investigation is created after the alert that
   # opened it; the alert's own alerted_at is when the event happened in the source system.
   - { source_path: "created_time",       ocsf_field: "time" }

integrations/rapid7-insightidr/mappers/query_log.yaml

@@ -41,9 +41,10 @@ ocsf:
   - { source_path: "detection_name", ocsf_field: "finding_info.title" }
   - { source_path: "detection_name", ocsf_field: "finding_info.analytic.name" }
   - { source_path: "$fromMillis(timestamp)", ocsf_field: "finding_info.created_time" }
-  # ── Detection time: the MTTD anchor ───────────────────────────────
-  # The log's own timestamp, not the poll's. A feed that ran late must not make the
-  # detection look late with it.
+  # ── Event time (OCSF `time`) ───────────────────────────────────────
+  # Riposte no longer reads it to date detection (MTTD retired, migration 0256):
+  # it is the alert's own record of when the source saw the event.
+  # The log's own timestamp, not the poll's.
   - { source_path: "$fromMillis(timestamp)", ocsf_field: "time" }
   # ── Product identity ──────────────────────────────────────────────
   - { source_path: "'Rapid7 InsightIDR'", ocsf_field: "metadata.product.name" }

integrations/rapid7-insightidr/mappers/query_log_set.yaml

@@ -40,9 +40,10 @@ ocsf:
   - { source_path: "detection_name", ocsf_field: "finding_info.title" }
   - { source_path: "detection_name", ocsf_field: "finding_info.analytic.name" }
   - { source_path: "$fromMillis(timestamp)", ocsf_field: "finding_info.created_time" }
-  # ── Detection time: the MTTD anchor ───────────────────────────────
-  # The log's own timestamp, not the poll's. A feed that ran late must not make the
-  # detection look late with it.
+  # ── Event time (OCSF `time`) ───────────────────────────────────────
+  # Riposte no longer reads it to date detection (MTTD retired, migration 0256):
+  # it is the alert's own record of when the source saw the event.
+  # The log's own timestamp, not the poll's.
   - { source_path: "$fromMillis(timestamp)", ocsf_field: "time" }
   # ── Product identity ──────────────────────────────────────────────
   - { source_path: "'Rapid7 InsightIDR'", ocsf_field: "metadata.product.name" }

integrations/rapid7-insightidr/mappers/search_alerts.yaml

@@ -50,7 +50,9 @@ ocsf:
   - { source_path: "type",                    ocsf_field: "finding_info.analytic.name" }
   - { source_path: "rule.rrn",                ocsf_field: "finding_info.analytic.uid" }
   - { source_path: "rule.version_rrn",        ocsf_field: "finding_info.analytic.version" }
-  # ── Detection time: the MTTD anchor ───────────────────────────────
+  # ── Event time (OCSF `time`) ───────────────────────────────────────
+  # Riposte no longer reads it to date detection (MTTD retired, migration 0256):
+  # it is the alert's own record of when the source saw the event.
   # alerted_at is when the underlying event happened in the source system; created_at is
   # when Rapid7 finished building the alert. Weakest first, strongest last.
   - { source_path: "created_at",              ocsf_field: "time" }