feat(site): add Charm Crush client icon to AI Bridge UI (#24662)

*Disclaimer: implemented by a Coder Agent using Claude Opus 4.6*

Follow-up to https://github.com/coder/coder/pull/24630 which added
backend Charm Crush client detection.

## Summary

Adds a `"Charm Crush"` case to the `AIBridgeClientIcon` switch so the
client filter and request logs show an icon instead of the generic
question mark fallback.

Uses a 💘 emoji-based SVG as a placeholder, matching Crush's branding.
Replace with an official brand SVG when one becomes available from the
Charm team.

## Changes

- `site/static/icon/charm-crush.svg`: new emoji-based placeholder icon.
-
`site/src/pages/AIBridgePage/RequestLogsPage/icons/AIBridgeClientIcon.tsx`:
added `"Charm Crush"` case.

site/src/pages/AIBridgePage/RequestLogsPage/icons/AIBridgeClientIcon.tsx

@@ -71,6 +71,13 @@ export const AIBridgeClientIcon = ({
 					className={cn(iconClassName, className)}
 				/>
 			);
+		case "Charm Crush":
+			return (
+				<ExternalImage
+					src="/icon/charm-crush.svg"
+					className={cn(iconClassName, className)}
+				/>
+			);
 		case "GitHub Copilot (VS Code)":
 		case "GitHub Copilot (CLI)":
 			return (

site/src/theme/icons.json

@@ -23,6 +23,7 @@
 	"azure.svg",
 	"bitbucket.svg",
 	"centos.svg",
+	"charm-crush.svg",
 	"claude.svg",
 	"clion.svg",
 	"code-insiders.svg",

site/static/icon/charm-crush.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256" viewBox="0 0 256 256">
+  <text x="128" y="192" font-size="192" text-anchor="middle">💘</text>
+</svg>