diff --git a/docs/dev-gate-report.md b/docs/dev-gate-report.md
index 3f6631b3..31141cad 100644
--- a/docs/dev-gate-report.md
+++ b/docs/dev-gate-report.md
@@ -10,6 +10,26 @@ blockers stay in one place.
 This contract is report-only. It does not authorize a real DEV or PROD
 deployment.
 
+## Report Lifecycle
+
+Each committed DEV gate report must carry `reportLifecycle`:
+
+- `state: "active"` means the report belongs to the current DEV gate surface.
+  Its `activeEndpoint` must be `http://74.48.78.17:16667`, its
+  `activeBrowserEndpoint` must be `http://74.48.78.17:16666`, and
+  `deprecatedEndpoint` must be `null`.
+- `state: "historical"` means the report is retained only for evidence
+  provenance. It may name a deprecated endpoint such as
+  `http://74.48.78.17:6667`, but it must stay blocked/non-green and cannot be
+  consumed as active acceptance evidence.
+- Active reports may preserve a legacy public endpoint only inside an explicit
+  `runtimeSmoke.legacyPublicEndpoint` object with `status: "deprecated"` and
+  `activeGreenEligible: false`.
+- M3 DEV-LIVE remains narrower than report freshness: it requires
+  `res_boxsimu_1:DO1 -> hwlab-patch-panel -> res_boxsimu_2:DI1` in real DEV
+  plus operation, audit, and evidence identifiers. SOURCE, LOCAL, DRY-RUN,
+  fixture, and historical report evidence are support/diagnostics only.
+
 ## Files
 
 - `reports/dev-gate/dev-gate-report.example.json`: machine-readable example.
@@ -29,6 +49,7 @@ Every report must include:
 - `acceptanceLevel`
 - `devOnly`
 - `prodDisabled`
+- `reportLifecycle`
 - `sourceContract`
 - `validationCommands`
 - `localSmoke`
diff --git a/internal/dev-report-lifecycle.mjs b/internal/dev-report-lifecycle.mjs
new file mode 100644
index 00000000..3955b22c
--- /dev/null
+++ b/internal/dev-report-lifecycle.mjs
@@ -0,0 +1,63 @@
+export const ACTIVE_DEV_PUBLIC_ENDPOINT = "http://74.48.78.17:16667";
+export const ACTIVE_DEV_BROWSER_ENDPOINT = "http://74.48.78.17:16666";
+export const DEPRECATED_DEV_PUBLIC_ENDPOINT = "http://74.48.78.17:6667";
+export const DEPRECATED_RESERVED_PROD_ENDPOINT = "http://74.48.78.17:6666";
+export const REPORT_LIFECYCLE_VERSION = "v1";
+
+export const deprecatedPublicEndpoints = Object.freeze([
+  DEPRECATED_DEV_PUBLIC_ENDPOINT,
+  DEPRECATED_RESERVED_PROD_ENDPOINT
+]);
+
+const deprecatedPublicEndpointPattern = /http:\/\/74\.48\.78\.17:666[67]\b/gu;
+
+export function findDeprecatedPublicEndpoints(text) {
+  return [...new Set(String(text).match(deprecatedPublicEndpointPattern) ?? [])].sort();
+}
+
+export function isDeprecatedEndpointAllowedInActiveReport(report, endpoint) {
+  const legacyEndpoint = report?.runtimeSmoke?.legacyPublicEndpoint;
+  return Boolean(
+    legacyEndpoint &&
+      legacyEndpoint.endpoint === endpoint &&
+      legacyEndpoint.status === "deprecated" &&
+      legacyEndpoint.activeGreenEligible === false
+  );
+}
+
+export function findForbiddenActiveDeprecatedEndpoints(report, raw) {
+  if (reportIsHistorical(report)) return [];
+  return findDeprecatedPublicEndpoints(raw).filter(
+    (endpoint) => !isDeprecatedEndpointAllowedInActiveReport(report, endpoint)
+  );
+}
+
+export function reportLifecycleState(report) {
+  return report?.reportLifecycle?.state ?? "active";
+}
+
+export function reportIsHistorical(report) {
+  return reportLifecycleState(report) === "historical";
+}
+
+export function activeReportLifecycle(summary) {
+  return {
+    version: REPORT_LIFECYCLE_VERSION,
+    state: "active",
+    activeEndpoint: ACTIVE_DEV_PUBLIC_ENDPOINT,
+    activeBrowserEndpoint: ACTIVE_DEV_BROWSER_ENDPOINT,
+    deprecatedEndpoint: null,
+    summary
+  };
+}
+
+export function historicalReportLifecycle({ activeEndpoint = ACTIVE_DEV_PUBLIC_ENDPOINT, deprecatedEndpoint, summary }) {
+  return {
+    version: REPORT_LIFECYCLE_VERSION,
+    state: "historical",
+    activeEndpoint,
+    activeBrowserEndpoint: ACTIVE_DEV_BROWSER_ENDPOINT,
+    deprecatedEndpoint,
+    summary
+  };
+}
diff --git a/reports/dev-gate/dev-artifacts.json b/reports/dev-gate/dev-artifacts.json
index 32368d42..9f8d81c2 100644
--- a/reports/dev-gate/dev-artifacts.json
+++ b/reports/dev-gate/dev-artifacts.json
@@ -1114,5 +1114,13 @@
     ],
     "blockers": []
   },
-  "notes": "DEV-only artifact report. Do not treat runtime placeholder images as real service implementations."
+  "notes": "DEV-only artifact report. Do not treat runtime placeholder images as real service implementations.",
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current DEV artifact publish report; it is not a DEV-LIVE runtime substitute."
+  }
 }
diff --git a/reports/dev-gate/dev-deploy-report.json b/reports/dev-gate/dev-deploy-report.json
index 15addb57..ab7582e4 100644
--- a/reports/dev-gate/dev-deploy-report.json
+++ b/reports/dev-gate/dev-deploy-report.json
@@ -1124,5 +1124,13 @@
     }
   },
   "blockers": [],
-  "notes": "DEV-only result. No PROD resources, secret values, force push, heavy e2e, browser e2e, or UniDesk runtime substitute were used."
+  "notes": "DEV-only result. No PROD resources, secret values, force push, heavy e2e, browser e2e, or UniDesk runtime substitute were used.",
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current DEV deploy apply report; active public API/health endpoint is 16667 and browser endpoint is 16666."
+  }
 }
diff --git a/reports/dev-gate/dev-edge-health.json b/reports/dev-gate/dev-edge-health.json
index c6dff262..9396ac60 100644
--- a/reports/dev-gate/dev-edge-health.json
+++ b/reports/dev-gate/dev-edge-health.json
@@ -752,5 +752,13 @@
       ],
       "nextTask": "Deploy cloud-api DB runtime readiness probe and/or repair DEV DB connectivity, then rerun the read-only health smoke without reading or printing the DB secret value."
     }
+  },
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current DEV edge-health report; deprecated public 6666/6667 endpoints are not valid active evidence."
   }
 }
diff --git a/reports/dev-gate/dev-gate-report.example.json b/reports/dev-gate/dev-gate-report.example.json
index 993c8a02..65bf6c86 100644
--- a/reports/dev-gate/dev-gate-report.example.json
+++ b/reports/dev-gate/dev-gate-report.example.json
@@ -69,5 +69,13 @@
       "summary": "No live DEV precondition evidence is attached."
     }
   ],
-  "notes": "Contract-only example. Do not treat this file as a real DEV gate report."
+  "notes": "Contract-only example. Do not treat this file as a real DEV gate report.",
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Active example report for the current DEV gate contract."
+  }
 }
diff --git a/reports/dev-gate/dev-m2-deploy-smoke-active.json b/reports/dev-gate/dev-m2-deploy-smoke-active.json
index 1156c3fa..c06c3019 100644
--- a/reports/dev-gate/dev-m2-deploy-smoke-active.json
+++ b/reports/dev-gate/dev-m2-deploy-smoke-active.json
@@ -252,5 +252,13 @@
       "summary": "Legacy public :6667 observations are retained only as historical blockers and are not accepted as active green evidence."
     }
   },
-  "notes": "M2 active report uses read-only GET probes only; PROD, service restarts, deployments, and script-driven apply flows were not touched."
+  "notes": "M2 active report uses read-only GET probes only; PROD, service restarts, deployments, and script-driven apply flows were not touched.",
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current M2 DEV deploy smoke report; legacy public endpoints are deprecated and not active green evidence."
+  }
 }
diff --git a/reports/dev-gate/dev-m3-hardware-loop.json b/reports/dev-gate/dev-m3-hardware-loop.json
index 30ad366f..27ec8f93 100644
--- a/reports/dev-gate/dev-m3-hardware-loop.json
+++ b/reports/dev-gate/dev-m3-hardware-loop.json
@@ -195,5 +195,13 @@
     "classification": "hardware loop",
     "observedAt": "2026-05-22T04:30:50.820Z",
     "result": "Live DEV M3 runtime was reachable but did not satisfy the M3 hardware-loop contract."
+  },
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current M3 DEV hardware trusted-loop report; DEV-LIVE requires res_boxsimu_1:DO1 -> hwlab-patch-panel -> res_boxsimu_2:DI1 with operation, audit, and evidence ids."
   }
 }
diff --git a/reports/dev-gate/dev-m4-agent-loop.json b/reports/dev-gate/dev-m4-agent-loop.json
index d0f094b4..dc65ba0f 100644
--- a/reports/dev-gate/dev-m4-agent-loop.json
+++ b/reports/dev-gate/dev-m4-agent-loop.json
@@ -75,5 +75,13 @@
     ],
     "summary": "Blocked at DB live readiness before scheduling a DEV agent task."
   },
-  "notes": "DEV M4 agent loop live preflight report. No secret material is read."
+  "notes": "DEV M4 agent loop live preflight report. No secret material is read.",
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current DEV M4 agent-loop preflight report; it does not substitute for M3 DEV-LIVE acceptance."
+  }
 }
diff --git a/reports/dev-gate/dev-m5-gate-aggregator-v2.json b/reports/dev-gate/dev-m5-gate-aggregator-v2.json
index e588c976..8d021645 100644
--- a/reports/dev-gate/dev-m5-gate-aggregator-v2.json
+++ b/reports/dev-gate/dev-m5-gate-aggregator-v2.json
@@ -1109,5 +1109,13 @@
     "node scripts/dev-evidence-blocker-aggregator.mjs --markdown",
     "node --check scripts/validate-dev-gate-report.mjs",
     "node scripts/validate-dev-gate-report.mjs"
-  ]
+  ],
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current M5 evidence aggregator report; source, local, and dry-run evidence are not DEV-LIVE acceptance."
+  }
 }
diff --git a/reports/dev-gate/dev-mvp-gate-report.json b/reports/dev-gate/dev-mvp-gate-report.json
index 3cb12cea..44775d3b 100644
--- a/reports/dev-gate/dev-mvp-gate-report.json
+++ b/reports/dev-gate/dev-mvp-gate-report.json
@@ -256,5 +256,13 @@
       "status": "not_observed",
       "evidence": "No additional blocker class observed in the short DEV-only retest"
     }
-  ]
+  ],
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current MVP gate report; M3 DEV-LIVE remains blocked until the patch-panel trusted loop is proven."
+  }
 }
diff --git a/reports/dev-gate/dev-preflight-report.json b/reports/dev-gate/dev-preflight-report.json
index 2cd425e0..914a2ef2 100644
--- a/reports/dev-gate/dev-preflight-report.json
+++ b/reports/dev-gate/dev-preflight-report.json
@@ -1553,5 +1553,13 @@
       "nextTask": "Deploy cloud-api DB runtime readiness probe and/or repair DEV DB connectivity, then rerun the read-only health smoke without reading or printing the DB secret value."
     }
   ],
-  "notes": "No PROD action, secret read, UniDesk runtime substitution, heavy e2e, browser e2e, runtime restart, or force push was performed."
+  "notes": "No PROD action, secret read, UniDesk runtime substitution, heavy e2e, browser e2e, runtime restart, or force push was performed.",
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "active",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": null,
+    "summary": "Current read-only DEV preflight report; source, local, and dry-run checks are not DEV-LIVE acceptance."
+  }
 }
diff --git a/reports/dev-gate/historical/dev-m3-hardware-loop-legacy-6667.json b/reports/dev-gate/historical/dev-m3-hardware-loop-legacy-6667.json
new file mode 100644
index 00000000..50383d22
--- /dev/null
+++ b/reports/dev-gate/historical/dev-m3-hardware-loop-legacy-6667.json
@@ -0,0 +1,37 @@
+{
+  "$schema": "https://hwlab.pikastech.local/schemas/dev-m3-hardware-loop-report.schema.json",
+  "$id": "https://hwlab.pikastech.local/reports/dev-gate/historical/dev-m3-hardware-loop-legacy-6667.json",
+  "reportVersion": "v1",
+  "issue": "pikasTech/HWLAB#38",
+  "taskId": "dev-m3-hardware-loop",
+  "commitId": "historical",
+  "acceptanceLevel": "dev_m3_hardware_loop",
+  "devOnly": true,
+  "prodDisabled": true,
+  "reportLifecycle": {
+    "version": "v1",
+    "state": "historical",
+    "activeEndpoint": "http://74.48.78.17:16667",
+    "activeBrowserEndpoint": "http://74.48.78.17:16666",
+    "deprecatedEndpoint": "http://74.48.78.17:6667",
+    "summary": "Historical deprecated endpoint snapshot retained only for evidence provenance; not active DEV-LIVE evidence."
+  },
+  "status": "blocked",
+  "generatedAt": "2026-05-22T00:00:00.000Z",
+  "runtimeTarget": {
+    "environment": "dev",
+    "namespace": "hwlab-dev",
+    "endpoint": "http://74.48.78.17:6667",
+    "requiredBoxSimulators": 2,
+    "requiredGatewaySimulators": 2,
+    "requiredPatchPanels": 1
+  },
+  "blockers": [
+    {
+      "type": "observability_blocker",
+      "scope": "deprecated-public-endpoint",
+      "status": "open",
+      "summary": "Legacy public :6667 evidence is historical/deprecated and cannot support current M3 DEV-LIVE acceptance."
+    }
+  ]
+}
diff --git a/scripts/dev-artifact-publish.mjs b/scripts/dev-artifact-publish.mjs
index 2b8077da..a329d2a3 100644
--- a/scripts/dev-artifact-publish.mjs
+++ b/scripts/dev-artifact-publish.mjs
@@ -9,6 +9,7 @@ import {
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 
+import { activeReportLifecycle } from "../internal/dev-report-lifecycle.mjs";
 import { ENVIRONMENT_DEV, SERVICE_IDS } from "../internal/protocol/index.mjs";
 import {
   BUILDABLE_IMPLEMENTATION_STATES,
@@ -824,6 +825,7 @@ function createReport({ args, repo, commitId, shortCommit, mode, services, artif
     acceptanceLevel: "dev_artifact_publish",
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle("Current DEV artifact publish report; it is not a DEV-LIVE runtime substitute."),
     sourceContract: {
       status: fatalBlocked ? "blocked" : "pass",
       documents: [
diff --git a/scripts/dev-m3-hardware-loop-smoke.mjs b/scripts/dev-m3-hardware-loop-smoke.mjs
index 97efaf23..71ede2e3 100644
--- a/scripts/dev-m3-hardware-loop-smoke.mjs
+++ b/scripts/dev-m3-hardware-loop-smoke.mjs
@@ -8,6 +8,7 @@ import { request as httpsRequest } from "node:https";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 
+import { activeReportLifecycle } from "../internal/dev-report-lifecycle.mjs";
 import { DEV_ENDPOINT, ENVIRONMENT_DEV } from "../internal/protocol/index.mjs";
 
 const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
@@ -566,6 +567,7 @@ function baseReport({ commitId, observedAt }) {
     acceptanceLevel: "dev_m3_hardware_loop",
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle("Current M3 DEV hardware trusted-loop report; DEV-LIVE requires res_boxsimu_1:DO1 -> hwlab-patch-panel -> res_boxsimu_2:DI1 with operation, audit, and evidence ids."),
     sourceContract: {
       status: "pass",
       documents: [
diff --git a/scripts/dev-m4-agent-loop-smoke.mjs b/scripts/dev-m4-agent-loop-smoke.mjs
index 7f91a620..84437891 100644
--- a/scripts/dev-m4-agent-loop-smoke.mjs
+++ b/scripts/dev-m4-agent-loop-smoke.mjs
@@ -7,6 +7,7 @@ import { readFile, writeFile, mkdir } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 
+import { activeReportLifecycle } from "../internal/dev-report-lifecycle.mjs";
 import { DEV_ENDPOINT, ENVIRONMENT_DEV } from "../internal/protocol/index.mjs";
 
 const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
@@ -151,6 +152,7 @@ function buildReport(fixture, evidence, result) {
     acceptanceLevel: "dev_m4_agent_loop",
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle("Current DEV M4 agent-loop preflight report; it does not substitute for M3 DEV-LIVE acceptance."),
     sourceContract,
     validationCommands,
     localSmoke: {
diff --git a/scripts/src/dev-deploy-apply.mjs b/scripts/src/dev-deploy-apply.mjs
index dba4da02..8f137702 100755
--- a/scripts/src/dev-deploy-apply.mjs
+++ b/scripts/src/dev-deploy-apply.mjs
@@ -10,6 +10,7 @@ import {
   DEV_DB_ENV_CONTRACT,
   summarizeDbContract
 } from "../../internal/cloud/db-contract.mjs";
+import { activeReportLifecycle } from "../../internal/dev-report-lifecycle.mjs";
 import { DEV_ENDPOINT, ENVIRONMENT_DEV, SERVICE_IDS } from "../../internal/protocol/index.mjs";
 
 const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
@@ -970,6 +971,7 @@ export async function runDevDeployApply(argv, io = {}) {
     acceptanceLevel: "dev_deploy_apply",
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle("Current DEV deploy apply report; active public API/health endpoint is 16667 and browser endpoint is 16666."),
     status,
     generatedAt: new Date().toISOString(),
     namespace,
diff --git a/scripts/src/dev-edge-health-smoke-lib.mjs b/scripts/src/dev-edge-health-smoke-lib.mjs
index b0c862da..5c8b1748 100644
--- a/scripts/src/dev-edge-health-smoke-lib.mjs
+++ b/scripts/src/dev-edge-health-smoke-lib.mjs
@@ -6,6 +6,7 @@ import path from "node:path";
 import { fileURLToPath } from "node:url";
 
 import { DEV_DB_ENV_CONTRACT, summarizeDbContract } from "../../internal/cloud/db-contract.mjs";
+import { activeReportLifecycle } from "../../internal/dev-report-lifecycle.mjs";
 import { DEV_ENDPOINT, ENVIRONMENT_DEV } from "../../internal/protocol/index.mjs";
 
 const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
@@ -118,6 +119,7 @@ async function createDevGateReport(edgeHealth) {
     acceptanceLevel: "dev_edge_health",
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle("Current DEV edge-health report; deprecated public 6666/6667 endpoints are not valid active evidence."),
     status,
     generatedAt: edgeHealth.generatedAt,
     namespace,
diff --git a/scripts/src/dev-evidence-blocker-aggregator.mjs b/scripts/src/dev-evidence-blocker-aggregator.mjs
index d92c7462..181c5e98 100644
--- a/scripts/src/dev-evidence-blocker-aggregator.mjs
+++ b/scripts/src/dev-evidence-blocker-aggregator.mjs
@@ -4,6 +4,7 @@ import { readFile } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 
+import { activeReportLifecycle, reportIsHistorical, reportLifecycleState } from "../../internal/dev-report-lifecycle.mjs";
 import { DEV_ENDPOINT, ENVIRONMENT_DEV, SERVICE_IDS } from "../../internal/protocol/index.mjs";
 
 export const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
@@ -33,6 +34,8 @@ const blockerTypes = new Set([
   "observability_blocker",
   "safety_blocker"
 ]);
+const historicalLifecycleSummary =
+  "Historical report retained for evidence provenance; it is not active green DEV evidence.";
 
 const reportPaths = Object.freeze({
   devPreflight: "reports/dev-gate/dev-preflight-report.json",
@@ -275,6 +278,7 @@ function sourceEntry(entry) {
     level: entry.level,
     status: entry.status,
     category: entry.category,
+    lifecycleState: entry.lifecycleState ?? "active",
     sources: entry.sources,
     commands: entry.commands,
     summary: entry.summary
@@ -282,18 +286,21 @@ function sourceEntry(entry) {
 }
 
 function reportEvidence({ milestone, level, report, status, category, summary, evidence = [], commands = [] }) {
+  const lifecycleState = reportLifecycleState(report);
+  const historical = lifecycleState === "historical";
   return {
     milestone,
     issue: report.issue,
     taskId: report.taskId ?? report.reportKind,
     reportPath: report.path,
     commitId: short(report.commitId ?? report.target?.commitId),
-    level,
-    status,
+    lifecycleState,
+    level: historical ? "BLOCKED" : level,
+    status: historical && status === "pass" ? "blocked" : status,
     category,
     commands,
     evidence,
-    summary
+    summary: historical ? `${summary} ${historicalLifecycleSummary}` : summary
   };
 }
 
@@ -485,6 +492,19 @@ function collectM5Evidence(reports) {
 function collectBlockers(reports) {
   const blockers = [];
   for (const report of Object.values(reports)) {
+    if (reportIsHistorical(report)) {
+      blockers.push({
+        id: `${report.taskId ?? report.reportKind ?? "report"}-historical:${report.path}`,
+        priority: "P2",
+        type: "observability_blocker",
+        scope: `${report.taskId ?? report.reportKind ?? "report"}-historical`,
+        status: "open",
+        source: report.path,
+        sourceIssue: report.issue,
+        summary: `${report.taskId ?? report.reportKind ?? "Report"} is historical/deprecated and must be refreshed before it can support active DEV evidence. ${historicalLifecycleSummary}`,
+        nextTask: "Regenerate the report as active DEV evidence or keep the historical snapshot in an archival path."
+      });
+    }
     for (const blocker of report.blockers ?? []) {
       if (isStaleLegacyIngressBlocker(blocker, report, reports)) {
         continue;
@@ -593,6 +613,7 @@ function groupByLevel(evidence, blockers) {
       milestone: item.milestone,
       issue: item.issue,
       taskId: item.taskId,
+      lifecycleState: item.lifecycleState,
       status: item.status,
       category: item.category,
       reportPath: item.reportPath,
@@ -780,6 +801,9 @@ export async function buildReport() {
     endpoint: DEV_ENDPOINT,
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle(
+      "Current M5 evidence aggregator report; source, local, and dry-run evidence are not DEV-LIVE acceptance."
+    ),
     safety: {
       reportOnly: true,
       noDeploy: true,
@@ -797,6 +821,7 @@ export async function buildReport() {
           path: report.path,
           issue: report.issue,
           taskId: report.taskId ?? report.reportKind,
+          lifecycleState: reportLifecycleState(report),
           status: primaryStatus(report),
           commitId: short(report.commitId ?? report.target?.commitId)
         }
diff --git a/scripts/src/dev-gate-preflight.mjs b/scripts/src/dev-gate-preflight.mjs
index 4d28bf5e..904d1350 100644
--- a/scripts/src/dev-gate-preflight.mjs
+++ b/scripts/src/dev-gate-preflight.mjs
@@ -10,6 +10,7 @@ import {
   buildDbHealthContract,
   summarizeDbContract
 } from "../../internal/cloud/db-contract.mjs";
+import { activeReportLifecycle } from "../../internal/dev-report-lifecycle.mjs";
 import { DEV_ENDPOINT, ENVIRONMENT_DEV, SERVICE_IDS } from "../../internal/protocol/index.mjs";
 import { probeRegistryCapabilities } from "./registry-capabilities.mjs";
 
@@ -1095,6 +1096,7 @@ function makeReport(args, targetCommit, targetShortCommit, reporter, artifactIde
     mode: "read-only",
     devOnly: true,
     prodDisabled: true,
+    reportLifecycle: activeReportLifecycle("Current read-only DEV preflight report; source, local, and dry-run checks are not DEV-LIVE acceptance."),
     forbiddenActions,
     validationCommands: [
       "node --check scripts/dev-gate-preflight.mjs",
diff --git a/scripts/validate-dev-gate-report.mjs b/scripts/validate-dev-gate-report.mjs
index 3af01168..ef2d0772 100644
--- a/scripts/validate-dev-gate-report.mjs
+++ b/scripts/validate-dev-gate-report.mjs
@@ -5,6 +5,16 @@ import { constants as fsConstants } from "node:fs";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 
+import {
+  ACTIVE_DEV_BROWSER_ENDPOINT,
+  ACTIVE_DEV_PUBLIC_ENDPOINT,
+  REPORT_LIFECYCLE_VERSION,
+  deprecatedPublicEndpoints,
+  findDeprecatedPublicEndpoints,
+  findForbiddenActiveDeprecatedEndpoints,
+  reportIsHistorical
+} from "../internal/dev-report-lifecycle.mjs";
+
 const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
 const reportsDir = path.join(repoRoot, "reports/dev-gate");
 
@@ -330,24 +340,101 @@ function assertUnique(values, label) {
   assert.equal(new Set(values).size, values.length, `${label} must be unique`);
 }
 
-async function readJsonFile(relativePath) {
+function assertReportLifecycle(report, raw, label) {
+  assertObject(report.reportLifecycle, `${label}.reportLifecycle`);
+  const lifecycle = report.reportLifecycle;
+  assert.equal(lifecycle.version, REPORT_LIFECYCLE_VERSION, `${label}.reportLifecycle.version`);
+  assert.ok(["active", "historical"].includes(lifecycle.state), `${label}.reportLifecycle.state`);
+  assert.equal(lifecycle.activeEndpoint, ACTIVE_DEV_PUBLIC_ENDPOINT, `${label}.reportLifecycle.activeEndpoint`);
+  assert.equal(lifecycle.activeBrowserEndpoint, ACTIVE_DEV_BROWSER_ENDPOINT, `${label}.reportLifecycle.activeBrowserEndpoint`);
+  assertString(lifecycle.summary, `${label}.reportLifecycle.summary`);
+
+  if (lifecycle.state === "active") {
+    assert.equal(lifecycle.deprecatedEndpoint, null, `${label}.reportLifecycle.deprecatedEndpoint`);
+    assert.deepEqual(
+      findForbiddenActiveDeprecatedEndpoints(report, raw),
+      [],
+      `${label} active report must not use deprecated public endpoints as active evidence`
+    );
+    return;
+  }
+
+  assert.ok(
+    deprecatedPublicEndpoints.includes(lifecycle.deprecatedEndpoint),
+    `${label}.reportLifecycle.deprecatedEndpoint must name a deprecated public endpoint`
+  );
+  assert.ok(
+    lifecycle.summary.toLowerCase().includes("historical") ||
+      lifecycle.summary.toLowerCase().includes("deprecated"),
+    `${label}.reportLifecycle.summary must explain the historical/deprecated state`
+  );
+  const deprecatedMatches = findDeprecatedPublicEndpoints(raw);
+  assert.ok(
+    deprecatedMatches.length === 0 || deprecatedMatches.includes(lifecycle.deprecatedEndpoint),
+    `${label}.reportLifecycle.deprecatedEndpoint must cover deprecated public endpoint evidence`
+  );
+}
+
+function primaryReportStatus(report) {
+  return report.status ??
+    report.gateStatus ??
+    report.conclusion ??
+    report.artifactPublish?.status ??
+    report.summary?.status ??
+    (Array.isArray(report.blockers) && report.blockers.length > 0 ? "blocked" : "not_run");
+}
+
+function validateHistoricalReport(report, label) {
+  assert.equal(report.devOnly, true, `${label}.devOnly`);
+  assert.equal(report.prodDisabled, true, `${label}.prodDisabled`);
+  assertString(report.issue, `${label}.issue`);
+  assert.ok(allowedIssues.has(report.issue), `${label}.issue must be a known HWLAB DEV gate issue`);
+  assertString(report.taskId ?? report.reportKind, `${label}.taskId`);
+  assert.ok(
+    ["blocked", "not_run", "not_applicable", "failed", "degraded"].includes(primaryReportStatus(report)),
+    `${label} historical report must not present active green status`
+  );
+  assert.ok(
+    Array.isArray(report.blockers) && report.blockers.length >= 1,
+    `${label}.blockers must explain why the report is historical`
+  );
+  assertBlockers(report.blockers, `${label}.blockers`);
+}
+
+async function readJsonReport(relativePath) {
   const raw = await readFile(path.join(repoRoot, relativePath), "utf8");
-  return JSON.parse(raw);
+  return { report: JSON.parse(raw), raw };
 }
 
 async function collectReportFiles() {
   if (process.argv.length > 2) {
     return process.argv.slice(2).map((entry) => path.relative(repoRoot, path.resolve(process.cwd(), entry)));
   }
-  const entries = await readdir(reportsDir, { withFileTypes: true });
-  return entries
-    .filter((entry) => entry.isFile() && entry.name.endsWith(".json"))
-    .map((entry) => path.join("reports/dev-gate", entry.name))
-    .sort();
+  return collectReportJsonFiles(reportsDir, "reports/dev-gate");
+}
+
+async function collectReportJsonFiles(directory, relativeDirectory) {
+  const entries = await readdir(directory, { withFileTypes: true });
+  const nested = await Promise.all(entries.map(async (entry) => {
+    const relativePath = path.join(relativeDirectory, entry.name);
+    if (entry.isDirectory()) {
+      return collectReportJsonFiles(path.join(directory, entry.name), relativePath);
+    }
+    return entry.isFile() && entry.name.endsWith(".json") ? [relativePath] : [];
+  }));
+  return nested.flat().sort();
 }
 
 async function validateReport(relativePath) {
-  const report = await readJsonFile(relativePath);
+  const { report, raw } = await readJsonReport(relativePath);
+  const label = relativePath;
+  assertObject(report, label);
+  assertReportLifecycle(report, raw, label);
+  if (reportIsHistorical(report)) {
+    validateHistoricalReport(report, label);
+    return;
+  }
+
   if (report.reportKind === "dev-gate-preflight") {
     await validatePreflightReport(relativePath, report);
     return;
@@ -357,8 +444,6 @@ async function validateReport(relativePath) {
     return;
   }
 
-  const label = relativePath;
-  assertObject(report, label);
   if (report.issue === requiredDevM3Issue || report.taskId === "dev-m3-hardware-loop") {
     await validateDevM3Report(report, label);
     return;