Complete Agile SDLC Documentation for a Personal Expense Dashboard Web Application

Development activity and implementation plan

Development activity

Development converts sprint-ready stories and approved designs into testable increments. Implementation must remain traceable to requirement and user-story IDs.

Implementation workflow

1. Select an approved sprint story.
2. Create a version-control branch referencing the story ID.
3. Implement the required UI, business logic, data changes, and validation.
4. Add or update automated tests.
5. Perform developer-level verification.
6. Submit the change for peer review.
7. Resolve review findings.
8. Merge through the approved integration process.
9. Deploy the integrated increment to the sprint test environment.

Implementation mapping

• US-03 / FR-03: transaction form, validation, persistence, list refresh, dashboard recalculation.
• FR-04: transaction ownership validation, edit flow, delete confirmation, recalculation.
• US-05 / FR-05: monthly budget form, unique month rule, utilization calculations.
• FR-07: expense aggregation by category and chart dataset generation.
• FR-08: monthly income and expense aggregation and reporting dataset.

Coding and review controls

• Financial calculations use the approved fixed-precision approach.
• Private data is never fetched solely by record ID without user ownership validation.
• Validation is not delegated exclusively to the browser.
• Errors must not expose secrets or sensitive internal implementation details.
• Changed UI is reviewed at supported responsive breakpoints.
• New migrations must be tested against representative existing data.

Development exit criteria

• Implementation satisfies the story acceptance criteria.
• Peer code review approved.
• Automated checks pass.
• Required migrations apply successfully in the test environment.
• Feature is deployed to the sprint test environment.