feat(agenticChat): soften border radii across primary surfaces (SS-5650)

[twblack88]

Description

Softens border radii throughout the agentic chat UI to make surfaces feel cohesive and less sharp. Applies a two-tier bump:

• Prominent surfaces (Composer prompt box, chat window, drawer chat button): xl → 2xl
• Secondary surfaces (tool cards, user message bubbles, search input): lg → xl
• Minor/internal surfaces (conversation list highlights, code blocks, table borders, inner containers): md → lg

Files changed

File	Change
Composer.tsx	xl → 2xl — main prompt box is now the most visually soft element
AgenticChatWindow.tsx	xl → 2xl — floating chat window container
DrawerChatButton.tsx	xl → 2xl — AI Chat entry button
Chat.tsx	lg → xl — user message bubbles
DrawerChatHistory.tsx	search input lg → xl; conversation item highlights md → lg
DisplayToolCard.tsx	lg → xl — tool result cards
TxStepCard.tsx	root lg → xl; step row md → lg
ReceiveUI.tsx	inner containers md → lg
Markdown.tsx	tables and code blocks md → lg

Issue (if applicable)

closes SS-5650

Risk

Low — pure visual styling changes. No logic, state, or API interactions affected. All changes are within the agenticChat feature which is behind the AgenticChat feature flag.

Testing

Engineering

Enable the AgenticChat feature flag locally and visually verify:

• Composer (prompt input box) has visibly softer/rounder corners
• Floating chat window has rounder corners
• Tool result cards (swap, send, receive, tx steps) have rounder corners
• User message bubbles are rounder
• Chat history search input and conversation list highlights are rounder
• Markdown tables and code blocks are slightly rounder

Operations

• 🏁 My feature is behind a flag and doesn't require operations testing (yet)

Visual QA: open the AI Chat drawer/window, send a message, inspect the Composer box, New Chat button, Connect Wallet button, tool cards, and conversation list — all should feel cohesively softer with no hard edges or clipping artifacts.

Screenshots (if applicable)

Linear Issue: SS-5650

  

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch cursor/soften-border-radii-d75b

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