fix: reject @-selectors in parseOrgProjectArg with helpful redirect

[BYK]

Fixes CLI-MH: ResolutionError: Project '@latest' not found.

A user ran sentry issues @latest expecting the @latest magic selector to work. However, @latest is only recognized by parseIssueArg() (used in issue view/explain/plan), not by parseOrgProjectArg() (used in list commands). Since @ was not in RESOURCE_ID_FORBIDDEN, it passed validation, entered project-search mode, and produced a confusing "Project '@latest' not found" error.

Fix

Added rejectAtSelector() in src/lib/arg-parsing.ts that catches @-prefixed values before they reach project resolution:

• Known selectors (@latest, @most_frequent) → ValidationError with redirect: Use: sentry issue view @latest
• Unknown @-prefixed values → ValidationError: slugs don't start with @

Applied in three locations:

1. parseOrgProjectArg() bare-slug branch (@latest)
2. parseSlashOrgProject() leading-slash branch (/@latest)
3. parseSlashOrgProject() explicit org branch (sentry/@latest)

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

---

New Features ✨

• (dashboard) Rich terminal chart rendering for dashboard view by BYK in #555
• (formatters) Colorize SQL in DB span descriptions by BYK in #546
• (init) Treat bare slug as new project name when not found by BYK in #554
• Add sentry sourcemap inject and sentry sourcemap upload commands by BYK in #547
• Native debug ID injection and sourcemap upload by BYK in #543

Bug Fixes 🐛

• Reject @-selectors in parseOrgProjectArg with helpful redirect by BYK in #557

Internal Changes 🔧

Coverage

• Use informational-patch input instead of sed hack by BYK in #544
• Make checks informational on release branches by BYK in #541

Other

• (api) Collapse stats on issue detail endpoints to save 100-300ms by BYK in #551
• (ci) Upgrade GitHub Actions to Node 24 runtime by BYK in #542
• (db) DRY up database layer with shared helpers and lint enforcement by BYK in #550
• (issue-list) Use collapse parameter to skip unused Snuba queries by BYK in #545
• Bump Bun from 1.3.9 to 1.3.11 by BYK in #552
• Regenerate skill files by github-actions[bot] in ec1ffe28

---

_{🤖 This preview updates automatically when you update the PR.}

[github-actions]

Codecov Results 📊

✅ 126 passed | Total: 126 | Pass Rate: 100% | Execution Time: 0ms

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 1277 uncovered lines.
✅ Project coverage is 95.32%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
arg-parsing.ts	95.09%	⚠️ 19 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    95.32%    95.32%        —%
==========================================
  Files          194       194         —
  Lines        27279     27300       +21
  Branches         0         0         —
==========================================
+ Hits         26002     26023       +21
- Misses        1277      1277         —
- Partials         0         0         —

---

Generated by Codecov Action

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}