ui(chatbot): improve chat layout and reference presentation

[PRAteek-singHWY]

Before:
Content lacked clear structure and contributor-focused context.

After:
Improved clarity, structure, and contributor engagement with better visual hierarchy.

[PRAteek-singHWY]

Hi @northdpole — I’ve resolved the review comment and squashed/re-signed the commits so everything is now verified.
Could you please re-review and approve when convenient? Thanks!

[PRAteek-singHWY]

Hi @northdpole 👋

✅ Final UI Polish Update

I’ve added a small final polish commit to improve the overall chat experience while keeping functionality unchanged:
• Replaced the spinner with a subtle typing indicator for a more conversational feel
• Improved message bubble spacing and visual hierarchy
• Aligned the input and heading spacing closer to the original design
• No backend or API changes — the disclaimer text remains exactly as requested

📸 Updated Screenshots

Current UI (after polish):

🧪 Status
• All CI checks are green ✅

Since you’ve been actively reviewing recently, I wanted to gently flag this update in case you have time for a quick look.

Thanks again for your time and feedback — much appreciated!