Drop pending-sign-off wording from alarm docs

Duration/Latency thresholds are owner-approved; remove PENDING ADAM
SIGN-OFF / pending-sign-off notes from template.yaml comments and README.

README.md

@@ -74,13 +74,13 @@ sit in ALARM between runs). Alarm names follow `meal-order-manager-<fn>-<signal>
   over 5 min, fires on any error/throttle (threshold 0).
 - **Lambda Duration** — p99 over 5 min at ~80% of each function's timeout.
   API-fronted functions (submit-order, admin-authorizer) evaluate 3/3 datapoints;
-  cron/async functions evaluate a single datapoint. Thresholds pending sign-off.
+  cron/async functions evaluate a single datapoint.
 - **DynamoDB orders table** — `ReadThrottleEvents` and `WriteThrottleEvents`
   (TableName dimension). DynamoDB does not publish `ThrottledRequests`/`SystemErrors`
   at the table-only dimension, so those are intentionally not alarmed.
 - **API Gateway (OrderApi, HTTP API v2)** — 5xx (threshold 0), 4xx (threshold 20,
   3/2 datapoints to absorb routine 401s from the token authorizer), and p99 Latency
-  (~3000ms, pending sign-off).
+  (~3000ms).
 
 ## Authentication
 

template.yaml

@@ -608,8 +608,7 @@ Resources:
   # Duration alarms use ExtendedStatistic p99 at ~80% of each function's
   # configured timeout. Synchronous (API-fronted) functions evaluate over
   # 3 datapoints; cron / async-invoked functions evaluate a single datapoint
-  # (they fire too rarely for a multi-datapoint window). These thresholds
-  # are pending Adam sign-off — see PR body.
+  # (they fire too rarely for a multi-datapoint window).
 
   # Lambda Errors (Sum, 5min, any error breaches)
   SubmitOrderErrorsAlarm:
@@ -879,7 +878,7 @@ Resources:
       AlarmActions:
         - arn:aws:sns:us-east-1:328440206208:site-alerts
 
-  # Lambda Duration p99 (~80% of timeout) — PENDING ADAM SIGN-OFF
+  # Lambda Duration p99 (~80% of timeout)
   # Synchronous (API-fronted) functions: eval 3 / datapoints 3.
   SubmitOrderDurationAlarm:
     Type: AWS::CloudWatch::Alarm
@@ -1111,7 +1110,7 @@ Resources:
       AlarmActions:
         - arn:aws:sns:us-east-1:328440206208:site-alerts
 
-  # Latency p99 ~3000ms — PENDING ADAM SIGN-OFF (see PR body).
+  # Latency p99 ~3000ms (see PR body).
   OrderApiLatencyAlarm:
     Type: AWS::CloudWatch::Alarm
     Properties: