fix: follow-ups from the review of the price, Immich, moving day and import fixes

Saved place price (#2471)
- A price above zero that would be left without a currency is refused
  with a 400, over REST and through update_collection_place alike. A list
  has no base currency, so such an amount was read in each viewer's own
  default currency and went into a trip as the trip's. A price sent alone
  keeps the stored currency, and a zero price or clearing both fields
  still goes through. The check sits in the service because the MCP tool
  spreads the contract's shape, where a refine would never arrive.
- An older row that holds an amount without a currency shows it as a
  bare number instead of in the viewer's own currency.
- The Hungarian hint uses the informal register of its file, which is
  now prettier clean.

Immich certificate switch (#2475)
- The switch trusts one server. Saving a different URL without sending
  it turns it off; saving the same URL keeps it as before. The wiki says
  so.

Moving day (#2476)
- Google Maps and CoMaps are left out only when there is nothing to hand
  over. A day with a single stop opens it as a pin again, on the desktop
  and on the phone, as it did before.
- Desktop: a moving day whose flight or train has no stations shows no
  route tools, since there is nothing left to draw. With stations they
  stay.
- Phone: the drive between two stays on a day without stops or bookings
  shows once at the top instead of again at the bottom.
- The export helpers take the carrier flags as one object instead of two
  booleans in a row.

Import card (#2477)
- The success and error marks use the theme tokens.
- The e2e test names its upload with a made-up booking number.

Tests: COLLECTIONS-SVC-132 and 133, COLLECTIONS-E2E-088,
update_collection_place with a price and no currency, FE-COMP-COLEXTRAS-013
(011 adjusted), IMMICH-TLS-010, IMMICH-103 extended,
FE-PLANNER-DAYPLAN-222 adjusted and 224, FE-MOB-PLTL-051, FE-MOB-PTLM-047,
FE-W4BGT-023 and 024 check the mark colours.

server/src/nest/collections/collections.service.ts

@@ -995,6 +995,7 @@ export class CollectionsService {
   async updatePlace(userId: number, placeId: number, body: CollectionPlaceUpdateRequest, socketId?: string): Promise<CollectionPlace> {
     const currentCollection = this.collectionIdOfPlace(placeId);
     this.assertCanEdit(userId, currentCollection);
+    if (body.price !== undefined || body.currency !== undefined) this.assertPriceHasCurrency(placeId, body);
 
     // Capture the previous thumbnail so a replaced/cleared custom upload (#1136)
     // can be reclaimed once nothing references it any more.
@@ -1056,6 +1057,23 @@ export class CollectionsService {
     return this.getPlaceById(placeId);
   }
 
+  /**
+   * A list has no base currency, so a price that names none would be read in
+   * each viewer's own default currency and carried into a trip as the trip's
+   * (#2471). Checked here rather than in the contract so REST and the MCP tool,
+   * which spreads the contract's shape, refuse it alike. Only the row as it
+   * would look after this update counts, so a zero price or clearing both
+   * fields still goes through.
+   */
+  private assertPriceHasCurrency(placeId: number, body: Pick<CollectionPlaceUpdateRequest, 'price' | 'currency'>): void {
+    const stored = this.db.get<{ price: number | null; currency: string | null }>(
+      'SELECT price, currency FROM collection_places WHERE id = ?', placeId,
+    );
+    const price = body.price === undefined ? stored?.price ?? null : body.price;
+    const currency = body.currency === undefined ? stored?.currency ?? null : body.currency;
+    if (price != null && price > 0 && !currency) httpError(400, 'A price needs a currency: send its three-letter code along');
+  }
+
   setStatus(userId: number, placeId: number, status: CollectionStatus, socketId?: string): CollectionPlace {
     const collectionId = this.collectionIdOfPlace(placeId);
     this.assertCanEdit(userId, collectionId);

server/src/nest/memories/immich.service.ts

@@ -115,9 +115,10 @@ export class ImmichService {
   }
 
   /**
-   * `allowInsecureTls` left undefined keeps the stored choice, so a client that
-   * does not know the switch cannot clear it by saving. Disconnecting (no URL)
-   * always turns it off again.
+   * `allowInsecureTls` left undefined keeps the stored choice while the URL
+   * stays the same, so a client that does not know the switch cannot clear it
+   * by saving. The switch trusts one server, so a new URL without it starts
+   * off, and disconnecting (no URL) always turns it off again.
    */
   async saveImmichSettings(
     userId: number,
@@ -134,16 +135,17 @@ export class ImmichService {
       if (!ssrf.allowed) {
         return { success: false, error: `Invalid Immich URL: ${ssrf.error}` };
       }
+      const url = immichUrl.trim();
+      const insecure = allowInsecureTls === undefined ? null : Number(allowInsecureTls);
+      // SET expressions read the row as it was, so `immich_url IS ?` compares the
+      // stored URL with the new one.
       this.db
         .prepare(
-          'UPDATE users SET immich_url = ?, immich_api_key = ?, immich_allow_insecure_tls = COALESCE(?, immich_allow_insecure_tls) WHERE id = ?',
+          `UPDATE users SET immich_url = ?, immich_api_key = ?,
+             immich_allow_insecure_tls = CASE WHEN immich_url IS ? THEN COALESCE(?, immich_allow_insecure_tls) ELSE COALESCE(?, 0) END
+           WHERE id = ?`,
         )
-        .run(
-          immichUrl.trim(),
-          maybe_encrypt_api_key(immichApiKey),
-          allowInsecureTls === undefined ? null : Number(allowInsecureTls),
-          userId,
-        );
+        .run(url, maybe_encrypt_api_key(immichApiKey), url, insecure, insecure, userId);
       if (ssrf.isPrivate) {
         this.audit.writeAudit({
           userId,