[Medium]: Add robust validation and inline errors for event creation form

[AnirudhSinghRajora]

Problem Statement

Create event form currently depends mostly on basic input attributes and generic error handling. Users need clear inline validation feedback.

Proposed Approach

Define validation rules for each field.
Add local error state per input field.
Validate on input change and submit.
Show inline error text near each invalid field.
Disable submit while required fields are invalid.
Keep current successful flow unchanged.

Files and Scope

event-dappp/src/components/CreateEventPage.jsx

Acceptance Criteria

• Date field requires future date and shows inline error if invalid
• Numeric fields validate positive and sensible values
• Submit remains disabled while form is invalid
• Error messages are clear and field-specific

Test Plan

Enter invalid date, ticket count, ticket price, and stake values.
Verify inline errors appear for the correct fields.
Enter valid values and confirm submit is enabled.
Confirm valid submission still works as expected.

Risks and Edge Cases

Overly strict validation could block valid user input.
Need to ensure decimal values are handled correctly.

[Aranya0811]

/assign

[mini-walkerx]

✅ Successfully assigned to @Aranya0811.

You have 3 hours to complete this issue (Deadline: Sun, 12 Apr 2026 20:10:43 GMT).

[mini-walkerx]

⏰ @Aranya0811's time to complete this issue has expired. They have been unassigned. Waitlist logic will pick up the next user...

[mini-walkerx]

🔗 @vedparkasharya opened PR #18 for this issue and has been auto-assigned.

[mini-walkerx]

⚠️ Could not add @vedparkasharya to the GitHub assignees. They may need to be added as a collaborator. No assignment was recorded.