Improve eslint rules for unused vars

eslint.config.js

@@ -27,7 +27,14 @@ export default tseslint.config(
         "warn",
         { allowConstantExport: true },
       ],
-      "@typescript-eslint/no-unused-vars": "off",
+      "@typescript-eslint/no-unused-vars": [
+        "error",
+        {
+          "argsIgnorePattern": "^_",
+          "varsIgnorePattern": "^_",
+          "ignoreRestSiblings": true,
+        },
+      ],
       "custom/no-placeholder-comments": "error",
       "no-warning-comments": [
         "error",

src/components/NoteContent.tsx

@@ -73,7 +73,7 @@ export function NoteContent({
               </Link>
             );
           }
-        } catch (e) {
+        } catch {
           // If decoding fails, just render as text
           parts.push(fullMatch);
         }

src/components/auth/LoginDialog.tsx

@@ -1,7 +1,7 @@
 // NOTE: This file is stable and usually should not be modified.
 // It is important that all functionality in this file is preserved, and should only be modified if explicitly requested.
 
-import React, { useEffect, useRef, useState } from 'react';
+import React, { useRef, useState } from 'react';
 import { Shield, Upload } from 'lucide-react';
 import { Button } from '@/components/ui/button.tsx';
 import { Input } from '@/components/ui/input.tsx';

src/hooks/useToast.ts

@@ -15,13 +15,6 @@ type ToasterToast = ToastProps & {
   action?: ToastActionElement
 }
 
-const actionTypes = {
-  ADD_TOAST: "ADD_TOAST",
-  UPDATE_TOAST: "UPDATE_TOAST",
-  DISMISS_TOAST: "DISMISS_TOAST",
-  REMOVE_TOAST: "REMOVE_TOAST",
-} as const
-
 let count = 0
 
 function genId() {
@@ -29,23 +22,21 @@ function genId() {
   return count.toString()
 }
 
-type ActionType = typeof actionTypes
-
 type Action =
   | {
-      type: ActionType["ADD_TOAST"]
+      type: "ADD_TOAST";
       toast: ToasterToast
     }
   | {
-      type: ActionType["UPDATE_TOAST"]
+      type: "UPDATE_TOAST";
       toast: Partial<ToasterToast>
     }
   | {
-      type: ActionType["DISMISS_TOAST"]
+      type: "DISMISS_TOAST";
       toastId?: ToasterToast["id"]
     }
   | {
-      type: ActionType["REMOVE_TOAST"]
+      type: "REMOVE_TOAST";
       toastId?: ToasterToast["id"]
     }