4 more React.FormEvent deprecation sites (ts6385) — finish the #442 migration

[usirin]

What I was doing

Reviewing PR #536 (issue #442), which replaced the deprecated React.FormEvent with React.SyntheticEvent in apps/web/src/pages/SozlukHome.tsx. The review-code gate noted the same deprecation lives in sibling files that #442's scope explicitly excluded.

What I observed

Four more apps/web/src files use the deprecated React.FormEvent (TS 6385 — FormEvent carries @deprecated in the pinned @types/react, SyntheticEvent does not):

• DefinitionCard
• SozlukTermPage
• PanoPostDetail
• PanoSubmitPage

(Exact paths/lines to be confirmed by the implementer via grep -rn 'React.FormEvent' apps/web/src.) #442 named only SozlukHome.tsx, so these were correctly left untouched there — they are the remaining instances of the same one-line fix.

Why it matters

Same deprecation warning class, low-risk mechanical fix. Clearing them removes the residual ts6385 hints and finishes the migration #442 started. No behavior change expected (the handlers still call e.preventDefault(); SyntheticEvent is the non-deprecated supertype of FormEvent).

Pointers

• Reference fix: PR fix(sozluk): clear deprecated React.FormEvent hint (ts6385) #536 / issue SozlukHome onSearchSubmit uses deprecated React.FormEvent (ts 6385) #442 (the SozlukHome one-liner)
• grep -rn 'React.FormEvent' apps/web/src to enumerate the exact sites
• SyntheticEvent is the documented replacement (FormEvent<T> extends SyntheticEvent<T>); FormEvent<HTMLFormElement> was explicitly ruled out in SozlukHome onSearchSubmit uses deprecated React.FormEvent (ts 6385) #442 (the interface is deprecated regardless of type arg)

Suggested next step (non-binding)

One small PR applying the same React.FormEvent → React.SyntheticEvent change to all four sites, typecheck to confirm ts6385 is gone. Guess only — triage's call.

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_{Filed by an agent · session bcb88368-23f1-44a9-9302-e517e0fe9afb · branch main · 2026-06-17T04:54:43Z}

[usirin]

Triage: type:chore · p2 · status:triaged.

Follow-on to #442 (closed via PR #536, which fixed SozlukHome.tsx). type:chore — mechanical deprecation cleanup, no behavior change (SyntheticEvent is the non-deprecated supertype of FormEvent; handlers still call e.preventDefault()). The remaining four React.FormEvent sites #442 explicitly scoped out (DefinitionCard / SozlukTermPage / PanoPostDetail / PanoSubmitPage); implementer should grep -rn 'React.FormEvent' apps/web/src to pin exact lines. p2: hint-severity (ts6385), CI green, no urgency. Not a duplicate of #442 — it's the remaining instances of the same one-liner.

[usirin]

PR up: #572

Replaced all remaining React.FormEvent → React.SyntheticEvent across the 4 files (DefinitionCard, PanoPostDetail ×3, PanoSubmitPage, SozlukTermPage). grep -rn 'React.FormEvent' apps/web/src is now empty; typecheck + lint clean. No behavior change.