fix(terminal): stabilize skills table width across Terminal.app and iTerm (#42849)

* Terminal: measure grapheme display width

* Tests: cover grapheme terminal width

* Terminal: wrap table cells by grapheme width

* Tests: cover emoji table alignment

* Terminal: refine table wrapping and width handling

* Terminal: stop shrinking CLI tables by one column

* Skills: use Terminal-safe emoji in list output

* Changelog: note terminal skills table fixes

* Skills: normalize emoji presentation across outputs

* Terminal: consume unsupported escape bytes in tables

src/cli/dns-cli.ts

@@ -7,7 +7,7 @@ import { pickPrimaryTailnetIPv4, pickPrimaryTailnetIPv6 } from "../infra/tailnet
 import { getWideAreaZonePath, resolveWideAreaDiscoveryDomain } from "../infra/widearea-dns.js";
 import { defaultRuntime } from "../runtime.js";
 import { formatDocsLink } from "../terminal/links.js";
-import { renderTable } from "../terminal/table.js";
+import { getTerminalTableWidth, renderTable } from "../terminal/table.js";
 import { theme } from "../terminal/theme.js";
 
 type RunOpts = { allowFailure?: boolean; inherit?: boolean };
@@ -133,7 +133,7 @@ export function registerDnsCli(program: Command) {
       }
       const zonePath = getWideAreaZonePath(wideAreaDomain);
 
-      const tableWidth = Math.max(60, (process.stdout.columns ?? 120) - 1);
+      const tableWidth = getTerminalTableWidth();
       defaultRuntime.log(theme.heading("DNS setup"));
       defaultRuntime.log(
         renderTable({