fix(audit): P2 frontend any→concrete types (181→61), heroicons→lucide-react, missing type exports, toast API, Select options, TaskStatus types; P2-9 hooks.py type annotations

frontend/src/pages/Tasks.tsx

@@ -2,6 +2,7 @@
  * Tasks page — list with filter, create modal, detail.
  */
 
+import { asError } from '@/utils/errorTypes';
 import React, { useState, useMemo } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Button } from '@/components/ui/Button';
@@ -20,6 +21,7 @@ import {
   useUpdateTaskStatus,
   type Task,
   type TaskFilter,
+  type TaskStatus,
 } from '@/api/tasks';
 
 const STATUS_COLORS: Record<string, 'secondary' | 'info' | 'success'> = {
@@ -96,8 +98,8 @@ export function TasksPage() {
       });
       toast.success(t('tasks.created'));
       setCreateModalOpen(false);
-    } catch (err: any) {
-      toast.error(err.message || t('common.error'));
+    } catch (err: unknown) { const errObj = asError(err);
+      toast.error(errObj.message || t('common.error'));
     }
   };
 
@@ -107,8 +109,8 @@ export function TasksPage() {
       await updateMutation.mutateAsync({ id: editingTask.id, data: formData });
       toast.success(t('tasks.updated'));
       setEditingTask(null);
-    } catch (err: any) {
-      toast.error(err.message || t('common.error'));
+    } catch (err: unknown) { const errObj = asError(err);
+      toast.error(errObj.message || t('common.error'));
     }
   };
 
@@ -118,17 +120,17 @@ export function TasksPage() {
       await deleteMutation.mutateAsync(task.id);
       toast.success(t('tasks.deleted'));
       setSelectedTask(null);
-    } catch (err: any) {
-      toast.error(err.message || t('common.error'));
+    } catch (err: unknown) { const errObj = asError(err);
+      toast.error(errObj.message || t('common.error'));
     }
   };
 
-  const handleStatusChange = async (task: Task, newStatus: string) => {
+  const handleStatusChange = async (task: Task, newStatus: TaskStatus) => {
     try {
       await statusMutation.mutateAsync({ id: task.id, status: newStatus });
       toast.success(t('tasks.statusUpdated'));
-    } catch (err: any) {
-      toast.error(err.message || t('common.error'));
+    } catch (err: unknown) { const errObj = asError(err);
+      toast.error(errObj.message || t('common.error'));
     }
   };
 
@@ -163,7 +165,7 @@ export function TasksPage() {
             { value: 'done', label: t('tasks.statusDone') },
           ]}
           value={filter.status || ''}
-          onChange={(e) => { setFilter(f => ({ ...f, status: e.target.value || undefined })); setPage(1); }}
+          onChange={(e) => { setFilter(f => ({ ...f, status: (e.target.value || undefined) as TaskStatus | undefined })); setPage(1); }}
           className="w-40"
         />
         <Select