Deadline validation error (#68)

* validation errors fixed

* Deadline card design

* Update components/deadlines/DeadlineCard.tsx

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* Update lib/api/schemas.ts

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* Update components/deadlines/DeadlineCard.tsx

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

lib/api/schemas.ts

@@ -450,16 +450,16 @@ export const EvaluateMappingRulesSchema = z.union([
 export const CreateDeadlineSchema = z.object({
   title: z.string().min(1, 'Title is required'),
   due_date: isoDate,
-  due_time: timeString.optional(),
+  due_time: timeString.nullish(),
   deadline_type: DeadlineTypeSchema,
-  priority: DeadlinePrioritySchema.optional(),
-  customer_id: uuid.optional(),
-  notes: z.string().optional(),
-  tax_deadline_type: TaxDeadlineTypeSchema.optional(),
-  tax_period: z.string().optional(),
+  priority: DeadlinePrioritySchema.nullish(),
+  customer_id: uuid.nullish(),
+  notes: z.string().nullish(),
+  tax_deadline_type: TaxDeadlineTypeSchema.nullish(),
+  tax_period: z.string().nullish(),
   source: DeadlineSourceSchema.optional(),
-  linked_report_type: z.string().optional(),
-  linked_report_period: z.record(z.string(), z.unknown()).optional(),
+  linked_report_type: z.string().nullish(),
+  linked_report_period: z.record(z.string(), z.unknown()).nullish(),
 })
 
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