fix(showcase): block financial data from AI Q&A, fix FAB overflow, fix presenter slide mapping

AI Q&A: fetch is_showcase from DB; showcase sessions receive no financial/funding
context and have an explicit LLM guard refusing to discuss investment details.
FAQ context and financial slide IDs stripped from system prompt.

FAB: flex layout so Fullscreen button is always visible regardless of panel height.

Presenter: pass activeSlideOrder to usePresenterMode so buildSlideAudioPlan maps
slideIdx → slideId from the filtered list, not the full SLIDE_ORDER. Progress
calculation also filters to active scripts only.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pitch-deck/lib/hooks/usePresenterMode.ts

@@ -5,6 +5,7 @@ import { Language } from '../types'
 import { PresenterState, SlideScript } from '../presenter/types'
 import { PRESENTER_SCRIPT } from '../presenter/presenter-script'
 import { SLIDE_ORDER } from './useSlideNavigation'
+import { SlideId } from '../types'
 
 interface UsePresenterModeConfig {
   goToSlide: (index: number) => void
@@ -12,6 +13,7 @@ interface UsePresenterModeConfig {
   totalSlides: number
   language: Language
   ttsEnabled?: boolean
+  slideOrder?: SlideId[]
 }
 
 interface UsePresenterModeReturn {
@@ -57,8 +59,8 @@ interface SlideAudioPlan {
   segments: AudioSegment[]
 }
 
-function buildSlideAudioPlan(slideIdx: number, lang: Language): SlideAudioPlan | null {
-  const slideId = SLIDE_ORDER[slideIdx]
+function buildSlideAudioPlan(slideIdx: number, lang: Language, activeSlideOrder: SlideId[]): SlideAudioPlan | null {
+  const slideId = activeSlideOrder[slideIdx]
   const script = PRESENTER_SCRIPT.find(s => s.slideId === slideId)
   if (!script || script.paragraphs.length === 0) return null
 
@@ -121,7 +123,9 @@ export function usePresenterMode({
   totalSlides,
   language,
   ttsEnabled: initialTtsEnabled = true,
+  slideOrder: slideOrderProp,
 }: UsePresenterModeConfig): UsePresenterModeReturn {
+  const activeSlideOrder = slideOrderProp ?? SLIDE_ORDER
   const [state, setState] = useState<PresenterState>('idle')
   const [currentParagraph, setCurrentParagraph] = useState(0)
   const [displayText, setDisplayText] = useState('')
@@ -193,7 +197,7 @@ export function usePresenterMode({
     playSlideRef.current = async (slideIdx: number) => {
       if (stateRef.current !== 'presenting') return
 
-      const plan = buildSlideAudioPlan(slideIdx, language)
+      const plan = buildSlideAudioPlan(slideIdx, language, activeSlideOrder)
       if (!plan) {
         // No script for this slide — skip to next
         if (slideIdx < totalSlides - 1) {
@@ -216,7 +220,7 @@ export function usePresenterMode({
 
       // Pre-fetch next slide's audio in background
       if (slideIdx < totalSlides - 1) {
-        const nextPlan = buildSlideAudioPlan(slideIdx + 1, language)
+        const nextPlan = buildSlideAudioPlan(slideIdx + 1, language, activeSlideOrder)
         if (nextPlan) fetchAudio(nextPlan.fullText, language).catch(() => {})
       }
 
@@ -329,7 +333,7 @@ export function usePresenterMode({
         setIsSpeaking(false)
       }
     }
-  }, [language, totalSlides, goToSlide, ttsAvailable, ttsEnabled])
+  }, [language, totalSlides, goToSlide, ttsAvailable, ttsEnabled, activeSlideOrder])
 
   const start = useCallback(() => {
     unlockAudio()
@@ -410,14 +414,18 @@ export function usePresenterMode({
     }
   }, [unlockAudio, start, stop])
 
-  // Calculate overall progress
+  // Calculate overall progress against the active slide order's scripts
   const progress = (() => {
     if (state === 'idle') return 0
-    const totalScripts = PRESENTER_SCRIPT.length
-    const currentScriptIdx = PRESENTER_SCRIPT.findIndex(s => s.slideId === SLIDE_ORDER[currentSlide])
+    const currentSlideId = activeSlideOrder[currentSlide]
+    const activeScripts = activeSlideOrder
+      .map(id => PRESENTER_SCRIPT.find(s => s.slideId === id))
+      .filter(Boolean) as typeof PRESENTER_SCRIPT
+    const totalScripts = activeScripts.length || 1
+    const currentScriptIdx = activeScripts.findIndex(s => s.slideId === currentSlideId)
     if (currentScriptIdx < 0) return (currentSlide / totalSlides) * 100
 
-    const script = PRESENTER_SCRIPT[currentScriptIdx]
+    const script = activeScripts[currentScriptIdx]
     const slideProgress = script.paragraphs.length > 0
       ? currentParagraph / script.paragraphs.length
       : 0