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

shared/src/settings-registry.ts

@@ -200,6 +200,14 @@ export const settingsRegistry = {
     parse: parseJsonArrayOrNull,
     serialize: serializeNullableJsonArray,
   },
+  scoringInstructions: {
+    kind: "typed" as const,
+    schema: z.string().trim().max(4000),
+    default: (): string => "",
+    parse: parseNonEmptyStringOrNull,
+    serialize: (value: string | null | undefined): string | null =>
+      value ?? null,
+  },
   searchCities: {
     kind: "typed" as const,
     schema: z.string().trim().max(100),

shared/src/testing/factories.ts

@@ -163,6 +163,11 @@ export const createAppSettings = (
     default: [],
     override: null,
   },
+  scoringInstructions: {
+    value: "",
+    default: "",
+    override: null,
+  },
   searchCities: {
     value: "United Kingdom",
     default: "United Kingdom",

shared/src/types/settings.ts

@@ -126,6 +126,7 @@ export interface AppSettings {
   gradcrackerMaxJobsPerTerm: Resolved<number>;
   searchTerms: Resolved<string[]>;
   blockedCompanyKeywords: Resolved<string[]>;
+  scoringInstructions: Resolved<string>;
   searchCities: Resolved<string>;
   jobspyResultsWanted: Resolved<number>;
   jobspyCountryIndeed: Resolved<string>;