Feature: Add missing dhis2 periods

[nshandra]

📌 References

• Issue: Closes [User feedback] Add Six-monthly period for dataset

📝 Implementation

Added the following dataSet periods:

• WeeklyWednesday
• WeeklyThursday
• WeeklySaturday
• WeeklySunday
• BiWeekly
• BiMonthly
• QuarterlyNov
• SixMonthly
• SixMonthlyApril
• SixMonthlyNov

Added tests for all periods.

🔥 Notes for the reviewer

📹 Screenshots/Screen capture

📑 Others

#869b9v6pp

[ifoche]

Task linked: CU-869b9v6pp [User feedback] Add Six-monthly period for dataset

[bundlemon]

BundleMon

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Status	Path	Size	Limits
✅	Build Folder ./**/*	1.72MB (-165.77KB -8.62%)	+20%

Final result: ✅

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[xurxodev]

thanks @nshandra

This PR expands the supported DHIS2 dataset period types and adds a new TypeScript implementation of buildAllPossiblePeriods, along with Jest coverage for all newly added variants.

It's great.

I've found some issues to review.

1. Should fix

• src/domain/entities/DataForm.ts declares periodType?: DataFormPeriod, but src/webapp/utils/periods.ts can throw for missing/unsupported periodType.
  buildAllPossiblePeriods should not throw when periodType is missing; either accept periodType?: DataFormPeriod and return [], or add an early guard in the function.
• Improve type safety/readability in src/webapp/utils/periods.ts and push it towards a more functional/immutable style without introducing mutable let state. It's safe this change because now we have unit test. Examples:
  • eliminate let current; in generateSixMonthlyNovPeriods by computing current as a const expression (ternary) and, where feasible, use clone().add(...) to avoid mutating Moment instances;
  • type the accumulator/output arrays explicitly (e.g. const dates: string[] = []) so the contract is clear at a glance;
  • make intermediate values explicit/typed in helpers (so the types of start/end/current and formatting pieces are obvious during review).

2. Recommendations non blocking

• Tests status: src/test/utils/periods.spec.ts covers the newly added period variants and passes (yarn test --runInBand src/test/utils/periods.spec.ts). Consider adding a couple more edge cases (e.g. startDate > endDate) to validate robustness.