test: add unit tests for flagged-accounts (re #885)

[Ishaan-Gpt]

Summary

Adds unit tests for the flagged-account maintainer actions in src/app/actions/maintainer/flagged-accounts.ts, covering one file from the #885 checklist (one test file per PR). The suite covers getFlaggedAccounts (auth failure, empty installs/repos/active-users, query failures, row mapping with evidence filtering to maintainer repos, summary text per reason, severity defaulting to medium) and resolveFlaggedAccount (not found, wrong installation, missing or out-of-scope evidence, successful resolve with audit log and revalidation, persist failure).

Type of Change

• Bug fix
• New feature
• UI / UX improvement
• Refactor
• Documentation
• Other (unit tests)

Related Issue

Related to #885

What was changed?

New file src/app/actions/maintainer/flagged-accounts.test.ts with 14 tests, following the existing supabase-mock pattern used in ping-reviewers.test.ts and failed-events.test.ts.

Test plan: npx vitest run src/app/actions/maintainer/flagged-accounts.test.ts (14 passed), npx eslint on the new file (clean), npx tsc --noEmit (clean).

Screenshots

Not applicable.

Checklist

• My code follows the project structure and conventions
• I tested this locally (npm run dev equivalents: vitest, eslint, tsc)
• No hardcoded secrets or credentials
• I have updated documentation if needed
• The linked issue has correct labels per Label Guide

[github-actions]

Hey @Ishaan-Gpt

You have 4 open PRs right now. The limit is 3 at a time.

Please get your existing PRs merged or closed before opening new ones:

• test: add unit tests for issues-helpers (re #885) #902 - test: add unit tests for issues-helpers (re [TEST]: Add Missing Unit Tests for Core Logic and Actions #885)
• test: add unit tests for pr-volume-bucketing (re #885) #901 - test: add unit tests for pr-volume-bucketing (re [TEST]: Add Missing Unit Tests for Core Logic and Actions #885)
• test: add unit tests for analytics-range helpers #900 - test: add unit tests for analytics-range helpers

This PR will remain open but won't be reviewed until you're under the limit. See our Contributing Guidelines for details.