chore(lint): apply eslint auto-fixes across the .tsx backlog

Mechanical --fix output over the newly linted .tsx files (indent,
arrow-parens, comma-dangle, member-delimiter-style, unnecessary type
assertions), plus the three generic-arrow test hooks converted to
function declarations up front: the comma-dangle fixer strips the
<T,> disambiguation comma and turns them into parse errors otherwise.

packages/client/web-react/src/scoped-slots.tsx

@@ -232,13 +232,13 @@ function standardKit(
     kit['renderSlot'] = boundRenderSlot(host, entry)
     // renderSlotChain rides the same declaration source: only entries whose
     // children include a chain-kind slot receive the chain dispatch seat.
-    if (Object.values(entry.children).some((spec) => spec.kind === 'chain')) {
+    if (Object.values(entry.children).some(spec => spec.kind === 'chain')) {
       kit['renderSlotChain'] = boundRenderSlotChain(host, entry)
     }
     // SessionProvider standard seat: entries declaring a session-scope child
     // render the session area, so the framework hands them the self-wired
     // provider (module-level component = stable reference; no value import).
-    if (Object.values(entry.children).some((spec) => spec.scope === 'session')) {
+    if (Object.values(entry.children).some(spec => spec.scope === 'session')) {
       kit['SessionProvider'] = SessionProvider
     }
   }
@@ -297,7 +297,7 @@ function SlotOutlet({ slotKey, ownerProps, opts }: {
   const host = useHost()
   // Version tick drives entries() re-read; the host batches per microtask.
   useSyncExternalStore(
-    (fn) => host.subscribe(slotKey, fn),
+    fn => host.subscribe(slotKey, fn),
     () => host.getVersion(slotKey),
   )
   const sessionInfo = useSessionMaybeProvideInfo()
@@ -321,12 +321,12 @@ function SlotOutlet({ slotKey, ownerProps, opts }: {
     spec.scope === 'session'
       ? <StrictSessionEntry slotKey={slotKey} entry={entry} ownerProps={owner} key={key} />
       : (
-          <SlotErrorBoundary slotKey={slotKey} key={key}>
-            {spec.scope === 'session-maybe'
-              ? <SessionMaybeEntry entry={entry} ownerProps={owner} />
-              : <RootEntry entry={entry} ownerProps={owner} />}
-          </SlotErrorBoundary>
-        )
+        <SlotErrorBoundary slotKey={slotKey} key={key}>
+          {spec.scope === 'session-maybe'
+            ? <SessionMaybeEntry entry={entry} ownerProps={owner} />
+            : <RootEntry entry={entry} ownerProps={owner} />}
+        </SlotErrorBoundary>
+      )
   )
 
   if (spec.kind === 'single') {
@@ -335,7 +335,7 @@ function SlotOutlet({ slotKey, ownerProps, opts }: {
     return guarded(entry)
   }
   if (spec.kind === 'keyed') {
-    const entry = entries.find((e) => e.options?.key === opts?.entryKey)
+    const entry = entries.find(e => e.options?.key === opts?.entryKey)
     if (!entry) return <>{opts?.fallback ?? null}</>
     return guarded(entry)
   }
@@ -388,13 +388,13 @@ function SlotOutlet({ slotKey, ownerProps, opts }: {
     return elected ?? <>{opts?.fallback ?? null}</>
   }
   // list: registration order refined by explicit order, optional id filter.
-  const withListOptions = entries.map((entry) => ({
+  const withListOptions = entries.map(entry => ({
     entry,
     id: entry.options?.id,
     order: entry.options?.order ?? 0,
   }))
   let list = [...withListOptions].sort((a, b) => a.order - b.order)
-  if (opts?.only !== undefined) list = list.filter((item) => item.id === opts.only)
+  if (opts?.only !== undefined) list = list.filter(item => item.id === opts.only)
   if (list.length === 0) return <>{opts?.fallback ?? null}</>
   return <>{list.map((item, i) => guarded(item.entry, item.id ?? i))}</>
 }
@@ -403,7 +403,7 @@ function SlotOutlet({ slotKey, ownerProps, opts }: {
 function RootOutlet({ ownerProps }: { ownerProps: object }) {
   const host = useHost()
   useSyncExternalStore(
-    (fn) => host.subscribe('root', fn),
+    fn => host.subscribe('root', fn),
     () => host.getVersion('root'),
   )
   const entry = host.entriesOf('root')[0]

packages/client/web-react/src/session-provider.tsx

@@ -73,11 +73,11 @@ const absentSource: HostObservable<undefined> = {
 /** Bind a source that disappears with the current session to an optional selector hook. */
 export function maybeObservableHook<T>(source: HostObservable<T> | undefined): MaybeSnapshotSelectorHook<T> {
   if (source !== undefined) return observableHook(source)
-  return useAbsentSnapshot as MaybeSnapshotSelectorHook<T>
+  return useAbsentSnapshot
 }
 
 function useAbsentSnapshot<S>(_selector: (snapshot: never) => S, _equal?: (a: S, b: S) => boolean): S | undefined {
-  return observableHook(absentSource)(() => undefined)
+  observableHook(absentSource)(() => undefined)
 }
 
 /**
@@ -87,7 +87,7 @@ function useAbsentSnapshot<S>(_selector: (snapshot: never) => S, _equal?: (a: S,
  */
 export function SessionMaybeProvider({ children }: { children: ReactNode }) {
   const host = useHost()
-  const id = observableHook(host.sessions.current)((s) => s)
+  const id = observableHook(host.sessions.current)(s => s)
   return (
     <BindingContext.Provider value={host.sessions.maybeProvideInfo(id)}>
       {children}
@@ -112,7 +112,7 @@ export interface SessionProviderProps {
  */
 export function SessionProvider({ empty, children }: SessionProviderProps) {
   const host = useHost()
-  const id = observableHook(host.sessions.current)((s) => s)
+  const id = observableHook(host.sessions.current)(s => s)
   const info = id === undefined ? undefined : host.sessions.provideInfo(id)
   if (id === undefined || info === undefined) return <>{empty?.() ?? null}</>
   return (