fix(cli): stop error-tracking noise from duplicate-version uploads

[posthog-eu]

Summary

• Who it hurts: the team, not the user. A duplicate-version bundle upload — a normal outcome the user fixes by bumping the version — still minted an error-tracking $exception issue on every run, crowding out real CLI crashes.
• Last week's fix added CliUserError + a type filter in shouldCapturePosthogException, but Version X already exists was never wired into it: uploadFail threw a bare Error, which the message-substring filter never matched.
• The fingerprint made it worse — it hashed the minified top-frame symbol and the full install path, so the same abort split into a fresh issue per npx cache hash, bunx, pnpm store, and release.

Two small changes:

Area	Before	After
Upload aborts	uploadFail throws bare Error → captured	throws CliUserError → filtered by type
Plan-upgrade checks + app add	bare Error → captured	CliUserError → filtered
Fingerprint	fn:kind:name:symbol:filename:status	fn:kind:name:status
Graceful-exit warning	names --silent-fail (does not exist)	names --version-exists-ok

Behaviour kept intact: non-zero exit, the printed message, and the trackCommandFailed analytics events. Only the $exception capture goes away.

Why drop the frame instead of normalizing it: the CLI ships as one minified dist/index.js, so the top-frame symbol is renamed on every release and every frame's filename is the same install-path-prefixed index.js. Neither carries stable, discriminating signal — the command path, error kind, error name, and exit status do.

Test plan

• bun test/test-posthog-exception.mjs — added cases: CliUserError('Version X already exists') and Upload cancelled by user are not captured; fingerprint no longer contains the symbol or filename.
• bun test/test-init-app-conflict.mjs — isAppAlreadyExistsError still matches the reworded app add error (id moved to context, "already exists" kept in the message).
• bun test/test-plan-validation.mjs, bun test/test-trial-warning.mjs, bun test/test-analytics-error-category.mjs, bun test/test-app-created-source.mjs — all pass.
• tsgo --noEmit and oxlint clean.

Screenshots

Not applicable — no visible CLI output changes except the corrected --version-exists-ok flag name in one warning line.

Checklist

• My code follows the code style of this project and passes bun run lint:backend && bun run lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• My change has adequate E2E test coverage.
• I have tested my code manually, and I have provided steps how to reproduce my tests

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[codspeed-hq]

Merging this PR will not alter performance

✅ 43 untouched benchmarks
⏩ 2 skipped benchmarks¹

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_{Comparing posthog-self-driving/fixcli-stop-error-tracking-version-x-3f6676 (a08f6f2) with main (10f1f4a)²}

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on main (034dd27) during the generation of this report, so 10f1f4a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud