fix: all item/sub-object schemas accept string numbers from form inputs

Fixed offers, orders, attendance, scope-templates schemas — quantity,
unit_price, position, hours, minutes now use z.union([z.number(), z.string()])
with transform instead of bare z.number().

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

src/schemas/attendance.schema.ts

@@ -42,8 +42,8 @@ export const AttendanceLeaveSchema = z.object({
 
 const ProjectLogSchema = z.object({
   project_id: z.union([z.number(), z.string()]).transform(v => Number(v)),
-  hours: z.number().optional().default(0),
-  minutes: z.number().optional().default(0),
+  hours: z.union([z.number(), z.string()]).transform(v => Number(v) || 0).optional().default(0),
+  minutes: z.union([z.number(), z.string()]).transform(v => Number(v) || 0).optional().default(0),
 });
 
 export const AttendancePunchSchema = z.object({