ci: scripts and format (#68)

* ci(digest): approve with DIGEST_PAT after disabling require_last_push_approval

require_last_push_approval blocked barrettruth from approving their
own push. Disabled that restriction in the ruleset — 1 approval is
still required for all PRs, but the approver can now be the pusher.
DIGEST_PAT (barrettruth) approves, CI runs via PAT push, auto-merge
fires when checks pass.

* ci: format + scripts

.luarc.json

@@ -4,7 +4,8 @@
     "pathStrict": true
   },
   "workspace": {
-    "checkThirdParty": false
+    "checkThirdParty": false,
+    "ignoreDir": [".direnv"]
   },
   "type": {
     "checkTableShape": true