UX Text Improvements: Planner Pages (Keywords & Clusters)

IMPROVEMENTS - Planner Module:

Column Labels (Shared across all tables):
- 'Keyword' → 'Search Term'
- 'Volume' → 'Monthly Searches'
- 'Difficulty' → 'Competition Level'
- 'Country' → 'Target Location'
- 'Cluster' → 'Topic Group'
- 'Sector' → 'Topic Area'
- 'Status' → 'Prep Status'
- 'Created' → 'Date Added'

Keywords Page:
- Page title: 'Keywords' → 'Organize Your Keywords'
- Pipeline readiness message simplified:
  - 'Pipeline readiness at 22%' → 'You're 22% ready to start writing'
  - More specific guidance: 'Next step: Group your keywords by topic (36 keywords are ready to organize)'
- Navigation tabs updated:
  - 'Keywords' → 'Keywords (individual terms)'
  - 'Clusters' → 'Topics (keyword groups)'

Clusters Page:
- Page title: 'Keyword Clusters' → 'Topic Groups (Keyword Clusters)'
- Navigation tabs updated with context

These changes affect all pages using these shared column definitions (Keywords, Clusters, Ideas, Content, etc.)

NO CODE CHANGES: Only visible user-facing text updates

frontend/src/pages/Planner/Clusters.tsx

@@ -444,15 +444,15 @@ export default function Clusters() {
 
   // Planner navigation tabs
   const plannerTabs = [
-    { label: 'Keywords', path: '/planner/keywords', icon: <ListIcon /> },
-    { label: 'Clusters', path: '/planner/clusters', icon: <GroupIcon /> },
+    { label: 'Keywords (individual terms)', path: '/planner/keywords', icon: <ListIcon /> },
+    { label: 'Topics (keyword groups)', path: '/planner/clusters', icon: <GroupIcon /> },
     { label: 'Ideas', path: '/planner/ideas', icon: <BoltIcon /> },
   ];
 
   return (
     <>
       <PageHeader 
-        title="Keyword Clusters" 
+        title="Topic Groups (Keyword Clusters)" 
         badge={{ icon: <GroupIcon />, color: 'purple' }}
         navigation={<ModuleNavigationTabs tabs={plannerTabs} />}
         workflowInsights={workflowInsights}

frontend/src/pages/Planner/Keywords.tsx

@@ -500,12 +500,12 @@ export default function Keywords() {
     if (pipelineReadiness < 30) {
       insights.push({
         type: 'warning' as const,
-        message: `Pipeline readiness at ${pipelineReadiness}% - Most keywords need clustering before content ideation can begin`,
+        message: `You're ${pipelineReadiness}% ready to start writing - Next step: Group your keywords by topic (${unclusteredCount} keywords are ready to organize)`,
       });
     } else if (pipelineReadiness < 60) {
       insights.push({
         type: 'info' as const,
-        message: `Pipeline readiness at ${pipelineReadiness}% - Clustering progress is moderate, continue organizing keywords`,
+        message: `You're ${pipelineReadiness}% ready to start writing - Clustering progress is moderate, continue organizing keywords`,
       });
     } else if (pipelineReadiness >= 85) {
       insights.push({
@@ -611,15 +611,15 @@ export default function Keywords() {
 
   // Planner navigation tabs
   const plannerTabs = [
-    { label: 'Keywords', path: '/planner/keywords', icon: <ListIcon /> },
-    { label: 'Clusters', path: '/planner/clusters', icon: <GroupIcon /> },
+    { label: 'Keywords (individual terms)', path: '/planner/keywords', icon: <ListIcon /> },
+    { label: 'Topics (keyword groups)', path: '/planner/clusters', icon: <GroupIcon /> },
     { label: 'Ideas', path: '/planner/ideas', icon: <BoltIcon /> },
   ];
 
   return (
     <>
       <PageHeader 
-        title="Keywords" 
+        title="Organize Your Keywords" 
         badge={{ icon: <ListIcon />, color: 'green' }}
         navigation={<ModuleNavigationTabs tabs={plannerTabs} />}
         workflowInsights={workflowInsights}