feat: content strategy, image posts and a posting plan for the films

Adds twelve image posts made the same way as the films: six posters
(one picture of each film with its idea in two lines) and six cards
that answer a question clients ask before the first call. The answers
come from the questions and principles on the website.

The posting plan is data (six weeks, film, card and poster per week),
and the export writes the library in that order, by language, week and
day, with the text to post. All video posts now open with the hook of
their film. The reasoning is in plans/content-strategy.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/video/src/films/DocumentsFilm.tsx

@@ -43,7 +43,8 @@ const waitingSpot = (index: number): { x: number; y: number } => {
   return { x: PERSON.x + Math.cos(angle) * 78, y: PERSON.y + Math.sin(angle) * 78 };
 };
 
-const Drawing: FC = () => {
+/** The picture alone, without stage and statements: also used frozen, as an image post. */
+export const DocumentsDrawing: FC = () => {
   const frame = useCurrentFrame();
   const camera = cameraAt(frame, 2.6, 0.95, { x: BAR.x, y: barY(OPENING_BARS) - 20 });
   const { zoom, hair, others } = camera;
@@ -123,6 +124,6 @@ const Drawing: FC = () => {
 /** Incoming invoices: from a growing pile to documents that are read and booked by themselves. */
 export const DocumentsFilm: FC = () => (
   <FilmStage captions={CAPTIONS}>
-    <Drawing />
+    <DocumentsDrawing />
   </FilmStage>
 );