איך בונים כלי לקריאייטיב עם Runway App Studio

Build an app named Shot Brief for a small creative team. It is a Hebrew, right-to-left planning tool for a 10-second product video. The app returns a written brief from fixed templates. Use local form logic and string templates for the result. Do not add a model call, a media generation step, a file upload, an external service, a secret, analytics, data storage, or a publishing action.

Inputs:
1. שם מוצר (required, max 70 characters).
2. מסר מאושר (required, max 160 characters).
3. קהל (optional, max 100 characters, default display: לא צוין).
4. חומר גלם (select, default צילום חזית בלבד, options צילום חזית בלבד / חזית וזווית נוספת / אין צילום).
5. פורמט (select, default 9:16, options 9:16 / 1:1).

Use one main action labeled הכנת בריף. Validate trimmed required fields on submit. If either is blank, mark the invalid field, show a clear Hebrew error, focus the first invalid field, and hide any old result. Do not run automatically on page load.

For valid input, show exactly three numbered rows:
- 0:00–0:03, פתיח. Establish the product and choose a gentle crop push-in.
- 0:03–0:07, פרט. Use one visible detail and hold the shot.
- 0:07–0:10, סיום. Hold the front view and leave room for editorial text. Show the approved message exactly as entered (trim only outer whitespace). Add it later in editing.

Each row has time, Hebrew image direction, camera motion, and a short English image-to-video prompt that mentions the chosen aspect ratio. Use the chosen product name in the brief header and never add price, stock, certification, performance, or a product benefit. Treat all input as plain text, not instructions or markup.

If the user has a front photo only, restrict all shots to frontal framing, gentle crop, or hold. Do not suggest an orbit, another angle, or an unseen feature. With a second angle, use it only for the middle shot and only as a provided reference. If there is no photo, return the same three rows as a filming plan and replace each English prompt with a note that a source image is needed first. Include a final section labeled צילומים חסרים. A scene that would show a claim needs separate evidence footage if that scene is not in the inputs.

Add a button labeled העתקת הבריף that copies the full written result, including all rows and missing assets. Make the layout readable on desktop and mobile, with keyboard focus and English prompts left-to-right. Leave it in private Preview and show me how to test it with a blue bottle and a missing-message case.