Function useMarketplace

Returns {
    feedStore: Writable<ListingPage>;
    loadFeed: () => Promise<void>;
    loadMine: () => Promise<void>;
    markSold: (id: number) => Promise<boolean>;
    mineStore: Writable<ListingPage>;
    postListing: (input: CreateListingInput) => Promise<Listing>;
    removeListing: (id: number) => Promise<boolean>;
    searchListings: (q: string) => Promise<ListingPage>;
    viewListing: (
        id: number,
    ) => Promise<
        Listing & { contactPhone: string | null; isOwn: boolean }
        | null,
    >;
}

• feedStore: Writable<ListingPage>

  The public feed — active listings, newest first.

• loadFeed: () => Promise<void>

• loadMine: () => Promise<void>

• markSold: (id: number) => Promise<boolean>

• mineStore: Writable<ListingPage>

  The caller's own listings, every status.

• postListing: (input: CreateListingInput) => Promise<Listing>

• removeListing: (id: number) => Promise<boolean>

• searchListings: (q: string) => Promise<ListingPage>

• viewListing: (
      id: number,
  ) => Promise<
      Listing & { contactPhone: string | null; isOwn: boolean }
      | null,
  >