feat: NAS storage for invoices/offers, code cleanup, date/time fixes

- NAS storage for created invoices (PDF via puppeteer), received invoices,
  and offers with auto-save on create/edit
- Deterministic file paths derived from DB fields (no file_path column needed)
- Separate NAS mount points: NAS_FINANCIALS_PATH, NAS_OFFERS_PATH
- Invoice language field (cs/en) stored per invoice, replaces lang modal
- Invoices list filtered by month/year matching KPI card selection
- Centralized date helpers (src/utils/date.ts) replacing all .toISOString()
  calls that returned UTC instead of local time
- Attendance project switching uses exact time (not rounded)
- Comment cleanup: removed ~100 unnecessary/Czech comments
- Removed as-any casts in orders and attendance
- Prisma migrations: add invoice language, drop received_invoices BLOB columns

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/schemas/bank-accounts.schema.ts

@@ -7,7 +7,10 @@ export const CreateBankAccountSchema = z.object({
   iban: z.string().nullish(),
   bic: z.string().nullish(),
   currency: z.string().optional().default("CZK"),
-  is_default: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(false),
+  is_default: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(false),
   position: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
@@ -22,7 +25,9 @@ export const UpdateBankAccountSchema = z.object({
   iban: z.string().nullish(),
   bic: z.string().nullish(),
   currency: z.string().optional(),
-  is_default: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  is_default: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
   position: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))

src/schemas/company-settings.schema.ts

@@ -16,7 +16,9 @@ export const UpdateCompanySettingsSchema = z.object({
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
     .optional(),
-  require_2fa: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  require_2fa: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
   custom_fields: z.array(z.any()).optional(),
   supplier_field_order: z.array(z.any()).optional(),
 });

src/schemas/invoices.schema.ts

@@ -41,7 +41,10 @@ export const CreateInvoiceSchema = z.object({
     .transform((v) => Number(v))
     .optional()
     .default(21.0),
-  apply_vat: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  apply_vat: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
   payment_method: z.string().nullish(),
   constant_symbol: z.string().nullish(),
   bank_name: z.string().nullish(),
@@ -53,6 +56,7 @@ export const CreateInvoiceSchema = z.object({
   tax_date: z.string().nullish(),
   issued_by: z.string().nullish(),
   billing_text: z.string().nullish(),
+  language: z.string().optional().default("cs"),
   notes: z.string().nullish(),
   internal_notes: z.string().nullish(),
   items: z.array(InvoiceItemSchema).optional(),
@@ -61,6 +65,7 @@ export const CreateInvoiceSchema = z.object({
 export const UpdateInvoiceSchema = z.object({
   status: z.string().optional(),
   currency: z.string().optional(),
+  language: z.string().optional(),
   payment_method: z.string().nullish(),
   constant_symbol: z.string().nullish(),
   bank_name: z.string().nullish(),
@@ -73,7 +78,9 @@ export const UpdateInvoiceSchema = z.object({
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
     .optional(),
-  apply_vat: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  apply_vat: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
   issue_date: z.union([z.string(), z.null()]).optional(),
   due_date: z.union([z.string(), z.null()]).optional(),
   tax_date: z.union([z.string(), z.null()]).optional(),

src/schemas/offers.schema.ts

@@ -14,7 +14,10 @@ const QuotationItemSchema = z.object({
     .transform((v) => Number(v) || 0)
     .optional()
     .default(0),
-  is_included_in_total: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  is_included_in_total: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
   position: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
@@ -46,7 +49,10 @@ export const CreateQuotationSchema = z.object({
     .transform((v) => Number(v))
     .optional()
     .default(21.0),
-  apply_vat: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  apply_vat: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
   exchange_rate: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
@@ -73,7 +79,9 @@ export const UpdateQuotationSchema = z.object({
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
     .optional(),
-  apply_vat: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  apply_vat: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
   exchange_rate: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))

src/schemas/orders.schema.ts

@@ -14,7 +14,10 @@ const OrderItemSchema = z.object({
     .transform((v) => Number(v) || 0)
     .optional()
     .default(0),
-  is_included_in_total: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  is_included_in_total: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
   position: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
@@ -55,7 +58,10 @@ export const CreateOrderSchema = z.object({
     .transform((v) => Number(v))
     .optional()
     .default(21.0),
-  apply_vat: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  apply_vat: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
   exchange_rate: z
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
@@ -82,7 +88,9 @@ export const UpdateOrderSchema = z.object({
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
     .optional(),
-  apply_vat: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  apply_vat: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
   items: z.array(OrderItemSchema).optional(),
   sections: z.array(OrderSectionSchema).optional(),
 });

src/schemas/trips.schema.ts

@@ -11,7 +11,10 @@ export const CreateTripSchema = z.object({
   end_km: z.union([z.number(), z.string()]).transform((v) => Number(v)),
   route_from: z.string(),
   route_to: z.string(),
-  is_business: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(false),
+  is_business: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(false),
   notes: z.string().nullish(),
 });
 
@@ -27,7 +30,9 @@ export const UpdateTripSchema = z.object({
     .optional(),
   route_from: z.string().optional(),
   route_to: z.string().optional(),
-  is_business: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  is_business: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
   notes: z.string().nullish(),
 });
 

src/schemas/users.schema.ts

@@ -7,7 +7,10 @@ export const CreateUserSchema = z.object({
   first_name: z.string().min(1, "Jméno je povinné"),
   last_name: z.string().min(1, "Příjmení je povinné"),
   role_id: z.union([z.number(), z.string()]).transform((v) => Number(v)),
-  is_active: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  is_active: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
 });
 
 export const UpdateUserSchema = z.object({
@@ -17,7 +20,9 @@ export const UpdateUserSchema = z.object({
   first_name: z.string().optional(),
   last_name: z.string().optional(),
   role_id: z.union([z.number(), z.string(), z.null()]).optional(),
-  is_active: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  is_active: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
 });
 
 export type CreateUserInput = z.infer<typeof CreateUserSchema>;

src/schemas/vehicles.schema.ts

@@ -15,7 +15,10 @@ export const CreateVehicleSchema = z.object({
     .transform((v) => Number(v))
     .optional()
     .default(0),
-  is_active: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional().default(true),
+  is_active: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional()
+    .default(true),
 });
 
 export const UpdateVehicleSchema = z.object({
@@ -31,7 +34,9 @@ export const UpdateVehicleSchema = z.object({
     .union([z.number(), z.string()])
     .transform((v) => Number(v))
     .optional(),
-  is_active: z.preprocess(v => v === true || v === 1 || v === "1", z.boolean()).optional(),
+  is_active: z
+    .preprocess((v) => v === true || v === 1 || v === "1", z.boolean())
+    .optional(),
 });
 
 export type CreateVehicleInput = z.infer<typeof CreateVehicleSchema>;