marketing: v3.1 launch video — 30s Remotion render

Six-scene 30-second MP4 announcing v3.1 (competitors mode) for X.

Lives at marketing/v3.1-launch/. Renders to out/last30days-v3.1-launch.mp4
(gitignored). 1920×1080 @ 30fps, H.264, ~3MB final.

Six scenes:
1. Hook (0-3s): badge + "What if one search ran 3 at once?"
2. Old way (3-8s): single terminal /last30days OpenAI
3. Fan-out (8-14s): --competitors splits into 3 parallel panes
4. Comparison (14-21s): 3 panes collapse into Head-to-Head table
5. How (21-26s): "You pick the topic. Agent picks peers. Engine fans out."
6. CTA (26-30s): install command + repo URL

Reusable components: TerminalWindow, TypedLine, BadgeBar,
ComparisonTable. Scene timing in src/lib/timing.ts as single source of
truth — one edit to retime everything.

Marketing version 3.1 ≠ engine code version (still 3.0.14). 3.1 is the
launch label that bundles 3.0.11-3.0.14 into one shippable narrative.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

marketing/v3.1-launch/README.md

@@ -0,0 +1,37 @@
+# /last30days v3.1 Launch Video
+
+30-second Remotion-rendered MP4 announcing **v3.1: Competitors mode** for posting on X.
+
+## Quick start
+
+```bash
+cd marketing/v3.1-launch
+npm install            # one-time, ~200MB of node_modules
+npm run preview        # opens Remotion Studio at localhost:3000 to scrub frames
+npm run render         # writes out/last30days-v3.1-launch.mp4 (high quality, CRF 18)
+npm run render:fast    # writes a CRF 23 preview for fast iteration
+```
+
+## Specs
+
+- 1920×1080, 30fps, 30 seconds (900 frames)
+- H.264 / MP4
+- Silent (autoplay-muted-friendly; captions baked in)
+- Marketing label `v3.1` (engine code version stays 3.0.14)
+
+## Scene timing (single source of truth: `src/lib/timing.ts`)
+
+| Scene | Frames | Time | What |
+|-------|--------|------|------|
+| 1. Hook | 0-89 | 0.0-3.0s | Badge animates in + "What if one search ran 3 at once?" |
+| 2. Old way | 90-239 | 3.0-8.0s | Single terminal: `/last30days OpenAI` |
+| 3. Fan-out | 240-419 | 8.0-14.0s | `--competitors` types in → splits into 3 panes |
+| 4. Comparison | 420-629 | 14.0-21.0s | 3 panes collapse into Head-to-Head table |
+| 5. How | 630-779 | 21.0-26.0s | 3-line text card |
+| 6. CTA | 780-899 | 26.0-30.0s | Install command + repo URL |
+
+Edit `src/lib/timing.ts` to retime scenes; the `LaunchVideo` composition reads from there.
+
+## Output
+
+Rendered MP4 lives at `out/last30days-v3.1-launch.mp4` (gitignored). Upload directly to X.