refactor(auth): keep the account payload handler and chat schemas in size

The createdAt field and the locale import grew files the size ratchet
holds. The account payload's insurance-number decryption moves into
its own helper, the import joins the zod one, and two comments lose a
wrapped line, so no baseline has to rise.

src/app/api/auth/me/route.ts

@@ -93,6 +93,21 @@ const SERVER_FEATURES = {
   lifeCircumstances: true,
 } as const;
 
+/**
+ * v1.7.0 — patient-identity fields for the health-record export. The KVNR is
+ * stored encrypted; decrypt fail-soft so a key-rotation gap on one row never
+ * 500s the whole profile fetch (the field just reads null and the user
+ * re-enters it).
+ */
+function readInsuranceNumber(encrypted: string | null | undefined) {
+  if (!encrypted) return null;
+  try {
+    return decrypt(encrypted);
+  } catch {
+    return null;
+  }
+}
+
 export const GET = apiHandler(async () => {
   const auth = await requireActorAuth();
   const { user } = auth;
@@ -289,24 +304,13 @@ export const GET = apiHandler(async () => {
     sectionsOpen(sections, "cycle") &&
     isCycleEnabled(record?.gender ?? null, cycleProfile);
 
-  // v1.7.0 — patient-identity fields for the health-record export. The
-  // KVNR is stored encrypted; decrypt fail-soft so a key-rotation gap on
-  // one row never 500s the whole profile fetch (the field just reads
-  // null and the user re-enters it).
-  let insuranceNumber: string | null = null;
-  if (identity?.insuranceNumberEncrypted) {
-    try {
-      insuranceNumber = decrypt(identity.insuranceNumberEncrypted);
-    } catch {
-      insuranceNumber = null;
-    }
-  }
+  const insuranceNumber = readInsuranceNumber(
+    identity?.insuranceNumberEncrypted,
+  );
 
   return apiSuccess({
     id: user.id,
     username: user.username,
-    // When the caller's account was created. The dashboard greeting says
-    // "welcome", not "welcome back", during an account's first day.
     createdAt: user.createdAt,
     email: user.email,
     role: user.role ?? "USER",

src/components/insights/coach-panel/use-coach.ts

@@ -1,6 +1,5 @@
 "use client";
 
-import type { Locale } from "@/lib/i18n/config";
 import {
   useCallback,
   useEffect,
@@ -896,7 +895,7 @@ export interface SendCoachMessageParams {
   conversationId?: string;
   message: string;
   prefill?: string;
-  locale?: Locale;
+  locale?: import("@/lib/i18n/config").Locale;
   /**
    * v1.4.20.1 — optional snapshot scope (per-source toggles + window)
    * driven by the sources-rail picker. When omitted the server falls

src/lib/ai/coach/types.ts

@@ -7,7 +7,6 @@
  * can pass messages through with minimal translation.
  */
 import { z } from "zod/v4";
-
 import { locales } from "@/lib/i18n/config";
 
 import { COACH_SCOPE_SOURCES } from "./scope-sources";
@@ -87,19 +86,14 @@ export const coachChatRequestSchema = z.object({
   conversationId: z.string().min(1).max(64).optional(),
   message: z.string().min(1).max(4000),
   prefill: z.string().max(2000).optional(),
-  /**
-   * The reply language: any UI locale. Overrides the cookie and the account's
-   * stored language for this turn (`resolveServerLocale`).
-   */
   locale: z.enum(locales).optional(),
   scope: coachScopeSchema.optional(),
   /**
-   * v1.16.6 — guided clarifying-questions flow: the pending question
-   * this message answers. The question bubble is client-side only
-   * (never persisted), so without this context the model would see a
-   * bare answer ("since 2019, with medication") and could not react
-   * to it. Rides the prompt as delimited user-provided context; the
-   * persisted user turn stays the answer alone.
+   * v1.16.6 — guided clarifying-questions flow: the pending question this
+   * message answers. The question bubble is client-side only (never persisted),
+   * so without this context the model would see a bare answer ("since 2019,
+   * with medication") and could not react to it. Rides the prompt as delimited
+   * user-provided context; the persisted user turn stays the answer alone.
    */
   guidedQuestion: z.string().min(1).max(500).optional(),
   /**

src/lib/validations/inbound-documents.ts

@@ -945,8 +945,7 @@ export const DOCUMENT_CHAT_MESSAGE_MAX = 4000;
  * Request body for `POST /api/documents/inbound/{id}/chat`. No `userId` and no
  * `documentId` field — the user is narrowed from the session and the document id
  * comes from the path. `conversationId` continues an existing thread scoped to
- * this document; omitting it starts a new one. `locale` is the reply language,
- * any UI locale, like the Coach's.
+ * this document; omitting it starts a new one. `locale` is the reply language.
  */
 export const documentChatRequestSchema = z
   .object({