ESLint --fix: auto-fix brace-style, indent, semi, no-trailing-spaces

Run eslint --fix across src/ to clear ~1900 mechanical lint errors
surfaced by the @typescript-eslint v8 + react-hooks v7 + react-compiler
upgrade in the React 19 modernization PR.

Issues fixed automatically:
- brace-style (Allman): try/catch one-liners reformatted to multi-line
- indent: tab-vs-space and depth corrections
- semi: missing trailing semicolons
- no-trailing-spaces

No semantic changes. Remaining 701 errors are real-code issues
(set-state-in-effect, rules-of-hooks, no-unsafe-* type checks) that
need manual per-file review.

https://claude.ai/code/session_01GrR87LAqnAEyKG2ZbmQt5Q

src/components/room/widgets/chat-input/ChatInputView.tsx

@@ -284,7 +284,10 @@ export const ChatInputView: FC<{}> = props =>
                     <ChatInputCommandSelectorView
                         commands={ filteredCommands }
                         selectedIndex={ selectedIndex }
-                        onSelect={ (cmd) => { setChatValue(':' + cmd.key + ' '); inputRef.current?.focus(); } }
+                        onSelect={ (cmd) =>
+                        {
+                            setChatValue(':' + cmd.key + ' '); inputRef.current?.focus();
+                        } }
                         onHover={ setSelectedIndex }
                     /> }
                 <div className="flex-1 items-center input-sizer">