Flatten repo structure: move crawler/ to root, remove vqa/ and immoweb/

The crawler subdirectory was the only active project. Moving it to the
repo root simplifies paths and removes the unnecessary nesting. The
vqa/ and immoweb/ directories were legacy/unused and have been removed.

Updated .drone.yml, .gitignore, .claude/ docs, and skills to reflect
the new flat structure.

crawler/frontend/src/components/Header.tsx

@@ -1,90 +0,0 @@
-import type { AuthUser } from '@/auth/types';
-import { Button } from './ui/button';
-import { Separator } from './ui/separator';
-import { LogOut, Home, Filter } from 'lucide-react';
-import { logout } from '@/auth/authService';
-import { clearPasskeyUser } from '@/auth/passkeyService';
-import { HealthIndicator } from './HealthIndicator';
-import { TaskIndicator } from './TaskIndicator';
-
-interface HeaderProps {
-    user: AuthUser;
-    activeFilterCount?: number;
-    taskID?: string | null;
-    isLoading?: boolean;
-    onToggleFilters?: () => void;
-    showFilterToggle?: boolean;
-    onTaskCancelled?: () => void;
-}
-
-export function Header({
-    user,
-    activeFilterCount = 0,
-    taskID,
-    onToggleFilters,
-    showFilterToggle = false,
-    onTaskCancelled,
-}: HeaderProps) {
-    const handleLogout = async () => {
-        if (user.provider === 'passkey') {
-            clearPasskeyUser();
-            window.location.reload();
-        } else {
-            await logout();
-        }
-    };
-
-    return (
-        <header className="flex h-14 shrink-0 items-center gap-3 border-b bg-background px-4">
-            {/* Logo / Brand */}
-            <div className="flex items-center gap-2">
-                <Home className="h-5 w-5 text-primary" />
-                <span className="font-semibold text-lg hidden sm:inline">Wrongmove</span>
-            </div>
-
-            <Separator orientation="vertical" className="h-6" />
-
-            {/* Health Indicator */}
-            <HealthIndicator />
-
-            {/* Task Indicator */}
-            <TaskIndicator taskID={taskID ?? null} onTaskCancelled={onTaskCancelled} />
-
-            {/* Filter Toggle (mobile) */}
-            {showFilterToggle && (
-                <Button
-                    variant="outline"
-                    size="sm"
-                    className="sm:hidden"
-                    onClick={onToggleFilters}
-                >
-                    <Filter className="h-4 w-4" />
-                    {activeFilterCount > 0 && (
-                        <span className="ml-1 bg-primary text-primary-foreground text-xs px-1.5 py-0.5 rounded-full">
-                            {activeFilterCount}
-                        </span>
-                    )}
-                </Button>
-            )}
-
-            {/* Spacer */}
-            <div className="flex-1" />
-
-            {/* User Menu */}
-            <div className="flex items-center gap-3">
-                <span className="text-sm text-muted-foreground hidden md:inline">
-                    {user.email}
-                </span>
-                <Button
-                    variant="ghost"
-                    size="sm"
-                    onClick={handleLogout}
-                    className="gap-2"
-                >
-                    <LogOut className="h-4 w-4" />
-                    <span className="hidden sm:inline">Logout</span>
-                </Button>
-            </div>
-        </header>
-    );
-}