fix(iam): add plan-role refresh reads for afi terraform state

ViewOnlyAccess omits iam:GetRole and events:DescribeRule; without a
scoped refresh policy, HCP plans fail after the first partial apply.

lib/terraform-substrate/terraform-substrate.template.yaml

@@ -377,10 +377,12 @@ Resources:
   #
   # First HCP Terraform workload. Trust subs are exact StringEquals on
   # organization/project/workspace/run_phase — never StringLike, never a
-  # wildcarded run_phase. Plan role: ViewOnlyAccess only (never ReadOnlyAccess,
-  # which grants secretsmanager:GetSecretValue). Apply role: attaches the
-  # shared guardrail plus stack-scoped Lambda / layer / EventBridge / Logs.
-  # Prod-only (IsProdAccount): this template also deploys to seahaven-dev.
+  # wildcarded run_phase. Plan role: ViewOnlyAccess (never ReadOnlyAccess,
+  # which grants secretsmanager:GetSecretValue) PLUS a stack-scoped refresh
+  # inline policy — ViewOnlyAccess omits iam:GetRole and events:DescribeRule,
+  # which Terraform needs to refresh state after the first apply. Apply role:
+  # attaches the shared guardrail plus stack-scoped Lambda / layer /
+  # EventBridge / Logs / artifact-bucket. Prod-only (IsProdAccount).
   # ---------------------------------------------------------------------------
   HcptfAfiBackupMonitorPlanRole:
     Type: AWS::IAM::Role
@@ -400,6 +402,60 @@ Resources:
                 "app.terraform.io:sub": organization:seahaven:project:seahaven-prod:workspace:afi-backup-monitor-prod:run_phase:plan
       ManagedPolicyArns:
         - arn:aws:iam::aws:policy/job-function/ViewOnlyAccess
+      Policies:
+        - PolicyName: afi-backup-monitor-plan-refresh
+          PolicyDocument:
+            Version: "2012-10-17"
+            Statement:
+              - Sid: RefreshIamRoles
+                Effect: Allow
+                Action:
+                  - iam:GetRole
+                  - iam:GetRolePolicy
+                  - iam:ListRolePolicies
+                  - iam:ListAttachedRolePolicies
+                Resource:
+                  - !Sub "arn:aws:iam::${AWS::AccountId}:role/tf-managed/afi-*"
+              - Sid: RefreshManagedPolicies
+                Effect: Allow
+                Action:
+                  - iam:GetPolicy
+                  - iam:GetPolicyVersion
+                Resource: "*"
+              - Sid: RefreshEventBridge
+                Effect: Allow
+                Action:
+                  - events:DescribeRule
+                  - events:ListTargetsByRule
+                  - events:ListTagsForResource
+                Resource:
+                  - !Sub "arn:aws:events:us-east-1:${AWS::AccountId}:rule/afi-*"
+              - Sid: RefreshLambda
+                Effect: Allow
+                Action:
+                  - lambda:GetFunction
+                  - lambda:GetFunctionConfiguration
+                  - lambda:GetPolicy
+                  - lambda:GetLayerVersion
+                  - lambda:ListVersionsByFunction
+                  - lambda:ListTags
+                Resource:
+                  - !Sub "arn:aws:lambda:us-east-1:${AWS::AccountId}:function:afi-*"
+                  - !Sub "arn:aws:lambda:us-east-1:${AWS::AccountId}:layer:afi-shared*"
+              - Sid: RefreshArtifactsBucket
+                Effect: Allow
+                Action:
+                  - s3:Get*
+                  - s3:ListBucket
+                Resource:
+                  - !Sub "arn:aws:s3:::afi-backup-monitor-artifacts-${AWS::AccountId}"
+                  - !Sub "arn:aws:s3:::afi-backup-monitor-artifacts-${AWS::AccountId}/*"
+              - Sid: RefreshLogs
+                Effect: Allow
+                Action:
+                  - logs:DescribeLogGroups
+                  - logs:ListTagsForResource
+                Resource: "*"
 
   HcptfAfiBackupMonitorApplyRole:
     Type: AWS::IAM::Role