- actions.ts: mergeCertsAction(files, outputFormat, password?) builds FormData with
multiple file fields; delegates to postForm('merge', ...) (T-09-02/T-09-04)
- MergeTab.tsx: multi-file state (local), file input (multiple), output selector
(pem|pfx), Zusammenfuehren button disabled when < 2 files (data-testid for tests),
onOutputFormatChange callback to page.tsx for shared PasswordField visibility
- ConvertTab.tsx: gains pfx option + onTargetFormatChange callback (same pattern)
- page.tsx: lifts mergeOutputFormat + convertOutputFormat state; showPassword now
also true when active tab's output format is 'pfx'; passes callbacks to tabs
- cert-manager.test.tsx: 5 new tests — MergeTab disabled/enabled by file count,
shared PasswordField appears on pfx output, downloadBase64 called on success;
ConvertTab pfx option present; all 19/19 web tests green
- All production cert-manager files type-clean (pre-existing test type issues unchanged)
- Add FileResponse interface to actions.ts
- Add convertCertAction(input, targetFormat): builds FormData with
file/pemText/password + targetFormat, calls postForm convert endpoint
- Implement ConvertTab: native select for pem/der/p7b targetFormat,
Konvertieren button with loading swap, error classification, empty state
- On success: calls downloadBase64(filename, content, mimeType)
- 3 new ConvertTab tests: format selector options, downloadBase64 invoked
on success, text-destructive error on format rejection
- All 14 web cert-manager tests green
schalli