LCFS - BCeID CI application Step 4

**Description:**
Create Step 4 of the CI application process for review, signing declaration, and submission.

**Wireframe:**
https://preview.uxpin.com/77159fa6e4246f73978bd68f8170c8bc42744cb7#/pages/220883197

**Purpose and benefit to user:**
Allows applicants to review their full application and formally submit it with a declaration.

**Acceptance Criteria:**
- Full application is displayed in locked format.
- All previous accordions can be opened for review and edit.
- Declaration checkboxes are required before submission.
- Signature data (user, date, time) is captured.
- Submission locks Steps 1–4 and transitions to Step 5.

**Development Checklist:**
- [ ] Build read-only summary view
- [ ] Implement declaration validation
- [ ] Capture electronic signature data
- [ ] Implement submission logic
- [ ] Lock editing after submission

**Notes:**
- Submission triggers workflow to IDIR users.
- Ensure accessibility via keyboard navigation and selection.
- Please validate compliance with WCAG 2.2 accessibility guidelines.
- Test across different browsers and devices to confirm consistent behaviour.