test : added unit tests for consistency-score isRecentlyActiveFromScore

[tmdeveloper007]

Closes #2634.

Summary of What Has been Done:
Added test/consistency-score.test.ts covering the isRecentlyActiveFromScore function exported from src/lib/consistency-score.ts. All 10 tests pass under vitest.

Changes Made:

• New file: test/consistency-score.test.ts (10 tests).
• Tests the recent-activity detection logic at boundary conditions: exact threshold (recent = 10), just below threshold (recent < 10), zero baseline, high-consistency/high-streak cases, and cases where the 100-point ceiling prevents recent from exceeding the threshold.

Impact it Made:
isRecentlyActiveFromScore is used in the Repository Health Explorer UI to display a "recently active" badge on the consistency score. The test ensures the 10-point recent-activity threshold is correctly enforced, preventing false-positive active badges when a user has good underlying scores but no recent commits.

[github-actions]

GSSoC Label Checklist 🏷️

@Umbrella-io — please apply the appropriate labels before merging:

Difficulty (pick one):

• level:beginner — 20 pts
• level:intermediate — 35 pts
• level:advanced — 55 pts
• level:critical — 80 pts

Quality (optional):

• quality:clean — ×1.2 multiplier
• quality:exceptional — ×1.5 multiplier

Validation (required to score):

• gssoc:approved — counts for points
• gssoc:invalid / gssoc:spam / gssoc:ai-slop — does not score

Type labels (type:*) are auto-detected from files and title. Review and adjust if needed.
Points formula: (difficulty × quality_multiplier) + type_bonus

[Priyanshu-byte-coder]

CI is failing on this PR. Please fix the TypeScript/test errors before we can merge. Run npm run typecheck and npm test locally to reproduce.

[tmdeveloper007]

This PR has been closed as it has been stale for more than 2 days without recent activity or merging. If this work is still relevant, please reopen a fresh PR.