A&R -> Improve variance search [DUE: SPRING]

#### Description:

Searching variances by individual park and month is time consuming. We need to be able to search variances by bundle (some can contain up to 12 parks) or a range of months

This ticket is to look at the ability to search variances by bundle.


#### Acceptance Criteria:
[Note: Use 'Given/When/Then' format if it makes sense to. Otherwise, a simple checklist that can be tested.]

#### Development Checklist:

- [ ] ...
- [ ] ...
- [ ] ...

#### Dependencies

- Blocked by
- Blocking

**Relevant documentation as reference**

**Definition of Ready**

- [ ] Acceptance criteria are included
- [ ] Wireframes are included (if applicable)
- [ ] Design / Solution is accepted by Product Owner (if applicable)
- [ ] Dependencies are identified (technical, business, regulatory/policy)
- [ ] Story has been estimated (under 13 pts)

**Definition of Done**
- In progress:
- [ ] Acceptance criteria are tested (Functionality meets the acceptance criteria defined in the ticket)
- [ ] UI meets accessibility requirements
- [ ] Unit tests are written
- [ ] Work is traceable in GitHub
- [ ] PR linked to ticket number
- [ ] If needed/required - Dev adds flag/label to highlight any migration steps necessary prior to PROD deployment
- Code review:
- [ ] Code is peer reviewed and has passed CI/CD tests
- QA:
- [ ] Acceptance criteria are tested (Functionality meets the acceptance criteria defined in the ticket)
- [ ] Code is potentially shippable to the production environment
- [ ] Functional features have been tested and passed by QA
- [ ] UI components tested by designer
- [ ] Code is deployed to PROD when moved to 'done' column (unless requested otherwise by PO)
- PO Review:
- [ ] Acceptance criteria are tested (Functionality meets the acceptance criteria defined in the ticket)
- [ ] Reviewed and approved by Product Owner

#### Notes:
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No files, tests, or entry points are named. First clarify the bundle-search behavior, expected results, and acceptance criteria with the product owner, then locate the variance search UI and its data path; done means bundle searches work, are tested, and meet the agreed accessibility and QA requirements.

Written by the indexing model from the issue text.