fix: WYSIWYG editor, content generation, and writing assistant bug fixes

- Fix text selection menu not showing: wire contentRef via inputRef on multiline TextField
- Fix blog title not truncating: add min-w-0 for flex item overflow
- Fix outline generation 500: escape curly braces in f-string prompt template
- Fix content generation 'NoneType not callable': replace SessionLocal() with get_session_for_user(), add db param to MediumBlogGenerator, fix signature mismatch in database_task_manager
- Fix writing assistant suggest 500: add auth + user_id to API endpoint and service, replace sync requests with httpx.AsyncClient
- Fix hallucination detector 404: explicitly include router in main.py and app.py
- Fix missing error_data in task failure responses
- Hide CopilotKit web inspector button
- Remove hardcoded fallback suggestions from SmartTypingAssist
- Fix stale closure refs in SmartTypingAssist handleTypingChange
- Add two-column editor layout, stats bar, section hover menu
- Various subscription, billing, and research module improvements

frontend/src/services/billingService.ts

@@ -318,10 +318,12 @@ export const billingService = {
       const raw = response.data.data as any;
       
       // Coerce usage stats first to ensure proper typing
-      const currentUsage = coerceUsageStats(raw?.current_usage ?? raw);
+      const totalUsage = coerceUsageStats(raw?.total_usage ?? raw);
+      const currentPeriodUsage = coerceUsageStats(raw?.current_period_usage ?? {});
       
       const coerced: DashboardData = {
-        current_usage: currentUsage,
+        total_usage: totalUsage,
+        current_period_usage: currentPeriodUsage,
         trends: raw?.trends ?? {
           periods: [],
           total_calls: [],

frontend/src/services/blogWriterApi.ts

@@ -589,11 +589,8 @@ export interface AssistiveSuggestionResponse {
 }
 
 export const assistiveWritingApi = {
-  async getSuggestion(text: string, maxResults: number = 1): Promise<AssistiveSuggestionResponse> {
-    const { data } = await aiApiClient.post('/api/writing-assistant/suggest', {
-      text,
-      max_results: maxResults
-    });
+  async getSuggestion(text: string): Promise<AssistiveSuggestionResponse> {
+    const { data } = await aiApiClient.post('/api/writing-assistant/suggest', { text });
     return data;
   }
 };

frontend/src/services/podcastApi.ts

@@ -22,7 +22,7 @@ import {
 } from "../components/PodcastMaker/types";
 import { checkPreflight, PreflightOperation } from "./billingService";
 import { TaskStatus } from "./storyWriterApi";
-import { isPodcastOnlyDemoMode } from "../utils/demoMode";
+import { isFeatureOnlyMode } from "../utils/demoMode";
 
 const DEFAULT_KNOBS: Knobs = {
   voice_emotion: "neutral",
@@ -360,7 +360,7 @@ export const podcastApi = {
       exaSuggestedConfig: analysisResp.data?.exa_suggested_config || undefined,
     };
 
-    const researchConfig = isPodcastOnlyDemoMode() ? null : await getResearchConfig();
+    const researchConfig = isFeatureOnlyMode() ? null : await getResearchConfig();
     
     // Use AI-generated queries if available, fallback to legacy mapping
     let queries: Query[] = [];