fix: replace unsupported action-level 'when' with separate automations in gitstream.cm (#845)

The 'when' key is not supported at the action level. Split the two
conditional add-label actions into dedicated automations
(pr_policy_unresolved_threads, pr_policy_missing_jira) with proper
automation-level 'if' conditions.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: vim-zz

docs/downloads/gitstream.cm

@@ -31,19 +31,6 @@ automations:
           label: "{{ calc.etr }} min review"
           color: {{ colors.red if (calc.etr >= 20) else (colors.yellow if (calc.etr >= 5) else colors.green) }}
 
-      - action: add-label@v1
-        when :  {{ pr.unresolved_threads }}
-        args:
-          label: "{{ pr.unresolved_threads | default(value=0) }} unresolved thread(s)"
-          color: {{ colors.yellow }}
-
-      - action: add-label@v1
-        when: {{ not (has.jira_ticket_in_title or has.jira_ticket_in_desc) }}
-        args:
-          label: "missing-jira"
-          color: {{ colors.red }}
-          # further automations available with Jira webhook
-
       # Assign reviewers silently
       - action: add-reviewers@v1
         args:
@@ -67,6 +54,31 @@ automations:
 
             > Labels/reviewers were applied quietly to keep this PR clean.
 
+  pr_policy_unresolved_threads:
+    on: [pr_created, commit]
+    if:
+      - {{ not pr.draft }}
+      - {{ not is.bot }}
+      - {{ pr.unresolved_threads }}
+    run:
+      - action: add-label@v1
+        args:
+          label: "{{ pr.unresolved_threads | default(value=0) }} unresolved thread(s)"
+          color: {{ colors.yellow }}
+
+  pr_policy_missing_jira:
+    on: [pr_created, commit]
+    if:
+      - {{ not pr.draft }}
+      - {{ not is.bot }}
+      - {{ not (has.jira_ticket_in_title or has.jira_ticket_in_desc) }}
+    run:
+      - action: add-label@v1
+        args:
+          label: "missing-jira"
+          color: {{ colors.red }}
+          # further automations available with Jira webhook
+
 # ----------------- config -----------------
 calc:
   etr: {{ branch | estimatedReviewTime }}