Add demo video + social post links to README

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -24,6 +24,11 @@ One shared reasoning engine, two lenses on the lives and worlds we didn't live.
 - **🌍 Reality Divergence (The World)** — speculative alternate history: pin a
   divergence point, reason forward through plausible ripples. *(Track: Thousand Token Wood)*
 
+## Links
+
+- 🎬 **Demo video:** https://youtu.be/cBzv7mwl_5E
+- 📣 **Social post:** https://www.linkedin.com/posts/prashant-kumar-96460963_reality-divergence-a-hugging-face-space-activity-7472308555153391616-0Ub1
+
 ## Model rationale (Build Small)
 
 - **Reasoning:** [`Qwen/Qwen2.5-7B-Instruct`](https://huggingface.co/Qwen/Qwen2.5-7B-Instruct)
@@ -63,8 +68,8 @@ Without a valid token the app still runs and shows fallback content.
 - [x] Gradio Space, model under 32B, open weights
 - [x] Dual-track UX (Backyard AI + Thousand Token Wood)
 - [x] Safety gate + graceful fallback
-- [ ] Demo video link — _TODO_
-- [ ] Social media post link — _TODO_
+- [x] Demo video link (see Links above)
+- [x] Social media post link (see Links above)
 
 ---