feat(coding-agent): surfaced lazy LSP servers as available in welcome screen

- Added "available" status so recognized servers show under lazy mode without warmup.
- Rendered full welcome box as pre-TUI splash with fixed slot heights to avoid layout shift.
- Reported lazy servers as available in /status instead of omitting the section.

packages/coding-agent/src/modes/controllers/command-controller.ts

@@ -315,7 +315,13 @@ export class CommandController {
 			info += `\n${theme.bold("LSP Servers")}\n`;
 			for (const server of this.ctx.lspServers) {
 				const statusColor =
-					server.status === "ready" ? "success" : server.status === "connecting" ? "warning" : "error";
+					server.status === "ready"
+						? "success"
+						: server.status === "available"
+							? "dim"
+							: server.status === "connecting"
+								? "warning"
+								: "error";
 				const statusText =
 					server.status === "error" && server.error ? `${server.status}: ${server.error}` : server.status;
 				info += `${theme.fg("dim", `${server.name}:`)} ${theme.fg(statusColor, statusText)} ${theme.fg("dim", `(${server.fileTypes.join(", ")})`)}\n`;