feat: Add password reset functionality with request and reset forms

feat: Implement price list import feature with preview and apply options

feat: Create price rules management page with CRUD operations

feat: Develop quotes management page with itemized quotes and status tracking

feat: Introduce organization registration page for new users

feat: Build suppliers management page with detailed supplier information

feat: Create users management page for inviting and managing roles

chore: Add TypeScript configuration for improved type checking

chore: Set up Vite configuration for development server and API proxy

chore: Add Vite environment type definitions for better TypeScript support

backend/company-migrations/0012_item_supplier_prices.sql

@@ -0,0 +1,28 @@
+alter table {schema}.items
+    add column if not exists manufacturer_code text;
+
+create table if not exists {schema}.item_supplier_prices (
+    id uuid primary key,
+    item_id uuid not null references {schema}.items(id) on delete cascade,
+    supplier_id uuid not null references {schema}.suppliers(id) on delete cascade,
+    external_item_number text not null,
+    purchase_price numeric(14, 4) not null,
+    currency text not null default 'EUR',
+    is_preferred boolean not null default false,
+    valid_from date,
+    valid_until date,
+    source text not null default 'manual',
+    created_at timestamptz not null default now(),
+    updated_at timestamptz not null default now(),
+    constraint item_supplier_prices_purchase_price_non_negative check (purchase_price >= 0),
+    constraint item_supplier_prices_currency_valid check (char_length(currency) = 3),
+    constraint item_supplier_prices_valid_range check (
+        valid_until is null or valid_from is null or valid_until >= valid_from
+    )
+);
+
+create unique index if not exists idx_item_supplier_prices_supplier_external
+    on {schema}.item_supplier_prices (supplier_id, external_item_number);
+
+create index if not exists idx_item_supplier_prices_item
+    on {schema}.item_supplier_prices (item_id, purchase_price);