diff --git a/agent99-control-plane.ps1 b/agent99-control-plane.ps1
index 6ccd58a62..03787a7a5 100644
--- a/agent99-control-plane.ps1
+++ b/agent99-control-plane.ps1
@@ -3795,13 +3795,14 @@ function Test-AgentRecentTelegramDelivery {
         continue
       }
       if (-not $data) { continue }
-      $allAttempts = @($data.telegram)
+      $allAttempts = @($data.telegram | Where-Object { $null -ne $_ })
       $attempts = @($allAttempts | Where-Object {
-        -not ($_.PSObject.Properties["suppressed"] -and $_.suppressed -eq $true)
+        $_ -and -not ($_.PSObject.Properties["suppressed"] -and $_.suppressed -eq $true)
       })
       if ($attempts.Count -eq 0) { continue }
 
       $sent = @($attempts | Where-Object {
+        $_ -and
         $_.sent -eq $true -and
         $_.relay -and
         $_.relay.ok -eq $true -and
diff --git a/apps/api/tests/test_agent99_transport_recovery_deploy_contract.py b/apps/api/tests/test_agent99_transport_recovery_deploy_contract.py
index d640f9ba7..b0062591f 100644
--- a/apps/api/tests/test_agent99_transport_recovery_deploy_contract.py
+++ b/apps/api/tests/test_agent99_transport_recovery_deploy_contract.py
@@ -454,6 +454,8 @@ def test_agent99_selfhealth_ignores_suppressed_lifecycle_attempts() -> None:
     assert 'PSObject.Properties["suppressed"]' in function
     assert "$_.suppressed -eq $true" in function
     assert "$_.relay.durableAck -eq $true" in function
+    assert '$data.telegram | Where-Object { $null -ne $_ }' in function
+    assert '$_ -and -not ($_.PSObject.Properties["suppressed"]' in function
 
 
 def test_agent99_object_reader_preserves_ordered_callback_identity() -> None:
diff --git a/docs/operations/agent99-host112-host111-recovery-readback-2026-07-15.snapshot.json b/docs/operations/agent99-host112-host111-recovery-readback-2026-07-15.snapshot.json
index 3d9104972..1d160a52b 100644
--- a/docs/operations/agent99-host112-host111-recovery-readback-2026-07-15.snapshot.json
+++ b/docs/operations/agent99-host112-host111-recovery-readback-2026-07-15.snapshot.json
@@ -67,6 +67,15 @@
       "legacy_text_reuse_false_green_blocked": true,
       "raw_visual_stored": false
     },
+    "self_health_null_telegram_row_guard": {
+      "status": "source_verified_not_deployed",
+      "powershell5_replay_terminal": "verified",
+      "input_rows": 3,
+      "non_null_rows": 2,
+      "actionable_rows": 1,
+      "durably_sent_rows": 1,
+      "runtime_write_performed": false
+    },
     "github_used": false
   },
   "secret_value_read": false,
diff --git a/docs/runbooks/FULL-STACK-COLD-START-SOP.md b/docs/runbooks/FULL-STACK-COLD-START-SOP.md
index d63b9ce3d..96caeb354 100644
--- a/docs/runbooks/FULL-STACK-COLD-START-SOP.md
+++ b/docs/runbooks/FULL-STACK-COLD-START-SOP.md
@@ -2770,3 +2770,8 @@ Windows99 原本已能產生 1200x760 PNG，但 canonical lifecycle ingress 只
   仍必須回 `visual_sent=false`，不得假綠。
 - 圖片渲染或傳輸失敗時文字 lifecycle 仍可送達，但 terminal 只能是 partial/degraded，
   `visualError` 與 `visual_delivery_status` 必須留在 evidence，待同一 incident 後續修復。
+- SelfCheck 讀取舊 evidence 時，`telegram[]` 可能含 JSON `null`。必須先排除 null row，
+  再判斷 `suppressed / sent / relay.durableAck`；不得對 null 直接取
+  `PSObject.Properties[...]`。這類 parser 錯誤即使 process exit 0 仍算 self-health defect，
+  必須由 Windows PowerShell 5 replay 證明 `null + suppressed + sent` 只留下單一 actionable
+  sent receipt，不能靠壓掉 stderr 或只看排程 LastTaskResult=0 關閉。