ELCC-82: Add Hot Meal Feature and Funding Period Error Handling

[klondikemarlen]

Relates to:

• https://yg-hpw.atlassian.net/browse/ELCC-82

Context

Child care centres need per-region hot meal increment configuration to apply different funding amounts based on regional policies. The existing system used fixed quality enhancement values that could not be customized by region. This PR adds per-region hot meal increment configuration and applies it during funding submission line JSON generation.

Implementation

1. Configure hot meal increment amounts per funding region through admin UI
2. Apply region-specific hot meal increments to quality enhancement funding during JSON generation
3. Regenerate funding submission line JSONs when centre hot meal option is toggled
4. Delete funding regions with dependent building expense categories
5. Show role-specific guidance when funding period is missing during fiscal year initialization

Deferred

• Funding region hot meal increment changes do not automatically regenerate funding submission line JSONs for affected centres. Centres continue using the old increment amount until their hot meal setting is toggled off and on. Deferred until epic https://yg-hpw.atlassian.net/browse/ELCC-79 is complete to reduce complexity.

Screenshots

Funding Region table with new hot meal increment amount
http://localhost:8080/administration/funding-regions

Funding Region creation with new hot meal increment amount (edit and view pages also include this)
http://localhost:8080/administration/funding-regions/new

Center Main View when funding period doesn't exist as admin
http://localhost:8080/child-care-centres/1/2026-27/summary/reconciliation

Center Main View when funding period doesn't exist as regular user
http://localhost:8080/child-care-centres/1/2026-27/summary/reconciliation

Testing Instructions

1. Run the test suite via dev test (or dev test_api).
2. Boot the app via dev up.
3. Log in to the app at http://localhost:8080.
4. Navigate to Administration → Funding Regions.
5. Edit a funding region and set a hot meal increment amount.
6. Navigate to a child care centre and enable hot meal option.
7. Verify the funding submission line JSONs include hot meal enhancements.
8. Disable the hot meal option on the centre.
9. Verify the hot meal enhancements are removed from the funding submission line JSONs.
10. Re-enable the hot meal option on the centre.
11. Verify the hot meal enhancements are reapplied to the funding submission line JSONs.
12. Navigate to a child care centre with no funding period for the selected fiscal year.
13. Verify appropriate empty state is shown with guidance based on user role.