Refactor keyword handling: Replace 'intent' with 'country' across backend and frontend

- Updated AutomationService to include estimated_word_count.
- Increased stage_1_batch_size from 20 to 50 in AutomationViewSet.
- Changed Keywords model to replace 'intent' property with 'country'.
- Adjusted ClusteringService to allow a maximum of 50 keywords for clustering.
- Modified admin and management commands to remove 'intent' and use 'country' instead.
- Updated serializers to reflect the change from 'intent' to 'country'.
- Adjusted views and filters to use 'country' instead of 'intent'.
- Updated frontend forms, filters, and pages to replace 'intent' with 'country'.
- Added migration to remove 'intent' field and add 'country' field to SeedKeyword model.

frontend/src/pages/Setup/IndustriesSectorsKeywords.tsx

@@ -58,7 +58,7 @@ export default function IndustriesSectorsKeywords() {
   
   // Filter state
   const [searchTerm, setSearchTerm] = useState('');
-  const [intentFilter, setIntentFilter] = useState('');
+  const [countryFilter, setCountryFilter] = useState('');
   const [difficultyFilter, setDifficultyFilter] = useState('');
 
   // Check if user is admin/superuser (role is 'admin' or 'developer')
@@ -153,7 +153,7 @@ export default function IndustriesSectorsKeywords() {
       }
 
       if (searchTerm) baseFilters.search = searchTerm;
-      if (intentFilter) baseFilters.intent = intentFilter;
+      if (countryFilter) baseFilters.country = countryFilter;
 
       // Fetch ALL pages to get complete dataset
       let allResults: SeedKeyword[] = [];
@@ -215,9 +215,9 @@ export default function IndustriesSectorsKeywords() {
           } else if (sortBy === 'difficulty') {
             aVal = a.difficulty;
             bVal = b.difficulty;
-          } else if (sortBy === 'intent') {
-            aVal = a.intent.toLowerCase();
-            bVal = b.intent.toLowerCase();
+          } else if (sortBy === 'country') {
+            aVal = a.country.toLowerCase();
+            bVal = b.country.toLowerCase();
           } else {
             return 0;
           }
@@ -249,7 +249,7 @@ export default function IndustriesSectorsKeywords() {
       setTotalCount(0);
       setTotalPages(1);
     }
-  }, [activeSite, activeSector, currentPage, pageSize, searchTerm, intentFilter, difficultyFilter, sortBy, sortDirection, toast]);
+  }, [activeSite, activeSector, currentPage, pageSize, searchTerm, countryFilter, difficultyFilter, sortBy, sortDirection, toast]);
 
   // Load data on mount and when filters change
   useEffect(() => {
@@ -521,28 +521,18 @@ export default function IndustriesSectorsKeywords() {
           },
         },
         {
-          key: 'intent',
-          label: 'Intent',
+          key: 'country',
+          label: 'Country',
           sortable: true,
-          sortField: 'intent',
+          sortField: 'country',
           render: (value: string) => {
-            const getIntentColor = (intent: string) => {
-              const lowerIntent = intent?.toLowerCase() || '';
-              if (lowerIntent === 'transactional' || lowerIntent === 'commercial') {
-                return 'success';
-              } else if (lowerIntent === 'navigational') {
-                return 'warning';
-              }
-              return 'info';
-            };
-
             return (
               <Badge
-                color={getIntentColor(value)}
+                color="info"
                 size="sm"
-                variant={value?.toLowerCase() === 'informational' ? 'light' : undefined}
+                variant="light"
               >
-                {value}
+                {value || '-'}
               </Badge>
             );
           },
@@ -584,15 +574,18 @@ export default function IndustriesSectorsKeywords() {
           placeholder: 'Search keywords...',
         },
         {
-          key: 'intent',
-          label: 'Intent',
+          key: 'country',
+          label: 'Country',
           type: 'select' as const,
           options: [
-            { value: '', label: 'All Intent' },
-            { value: 'informational', label: 'Informational' },
-            { value: 'navigational', label: 'Navigational' },
-            { value: 'transactional', label: 'Transactional' },
-            { value: 'commercial', label: 'Commercial' },
+            { value: '', label: 'All Countries' },
+            { value: 'US', label: 'United States' },
+            { value: 'CA', label: 'Canada' },
+            { value: 'GB', label: 'United Kingdom' },
+            { value: 'AE', label: 'United Arab Emirates' },
+            { value: 'AU', label: 'Australia' },
+            { value: 'IN', label: 'India' },
+            { value: 'PK', label: 'Pakistan' },
           ],
         },
         {
@@ -691,7 +684,7 @@ export default function IndustriesSectorsKeywords() {
         filters={pageConfig.filters}
         filterValues={{
           search: searchTerm,
-          intent: intentFilter,
+          country: countryFilter,
           difficulty: difficultyFilter,
         }}
         onFilterChange={(key, value) => {
@@ -699,8 +692,8 @@ export default function IndustriesSectorsKeywords() {
           
           if (key === 'search') {
             setSearchTerm(stringValue);
-          } else if (key === 'intent') {
-            setIntentFilter(stringValue);
+          } else if (key === 'country') {
+            setCountryFilter(stringValue);
             setCurrentPage(1);
           } else if (key === 'difficulty') {
             setDifficultyFilter(stringValue);
@@ -762,7 +755,7 @@ export default function IndustriesSectorsKeywords() {
           <div>
             <Label htmlFor="import-file">Upload CSV File</Label>
             <p className="text-sm text-gray-500 dark:text-gray-400 mb-2">
-              Expected columns: keyword, volume, difficulty, intent, industry_name, sector_name
+              Expected columns: keyword, volume, difficulty, country, industry_name, sector_name
             </p>
             <FileInput
               accept=".csv"