Add shared writing style preferences (#240)

* Add shared writing style preferences

* Address PR review feedback

* Add scoring instructions settings

* Polish writing style inputs

* Clarify do-not-use terms guidance

* Normalize blank writing style overrides

* Refactor writing style resolution to use effective values and enhance blank value handling

.codex/environments/environment.toml

@@ -0,0 +1,11 @@
+# THIS IS AUTOGENERATED. DO NOT EDIT MANUALLY
+version = 1
+name = "job-ops"
+
+[setup]
+script = ""
+
+[[actions]]
+name = "Run"
+icon = "run"
+command = "cd orchestrator && npm rebuild && npm run db:migrate && csex"