fix(governance): repair Mergify rule grammar

.mergify.yml

@@ -20,13 +20,13 @@ pull_request_rules:
           {{ title }} (#{{ number }})
 
           Co-authored-by: {{ author }}
-      post_merge:
-        action: close
 
   # Auto-merge dependabot/Renovate PRs when CI passes
   - name: Auto-merge dependency updates
     conditions:
-      - author=dependabot[bot] | renovate[bot]
+      - or:
+          - "author = dependabot[bot]"
+          - "author = renovate[bot]"
       - check-success=ci
       - -conflict
       - -closed
@@ -37,13 +37,14 @@ pull_request_rules:
           {{ title }} (#{{ number }})
 
           Co-authored-by: {{ author }}
-      post_merge:
-        action: close
 
   # Auto-merge bot PRs (CI configs, formatting) when CI passes
   - name: Auto-merge bot housekeeping PRs
     conditions:
-      - author=trunk-io[bot] | mergify[bot] | github-actions[bot]
+      - or:
+          - "author = trunk-io[bot]"
+          - "author = mergify[bot]"
+          - "author = github-actions[bot]"
       - check-success=ci
       - check-success=lint
       - -conflict
@@ -61,8 +62,6 @@ pull_request_rules:
       request_reviews:
         teams:
           - phenotype/core
-        github_accounts:
-          - KooshaPari
 
   # Label PRs based on changed files
   - name: Label Python changes
@@ -97,20 +96,6 @@ pull_request_rules:
         add:
           - typescript
 
-  # Close stale PRs after 30 days
-  - name: Close stale PRs
-    conditions:
-      - -closed
-      - -draft
-      - age>=30d
-      - "#review-requested=0"
-    actions:
-      comment:
-        message: >
-          This PR has been automatically closed after 30 days of inactivity.
-          Feel free to reopen if still relevant.
-      close: {}
-
   # Warn on large PRs
   - name: Warn on large PRs
     conditions: