fix: extract semver before comparing CLI versions

The installed version string includes a suffix like '(Claude Code)'
which caused Number() to parse the third segment as NaN, making the
comparison always return 0 (current) instead of the correct result.
Now extracts the semver portion with a regex before comparing.

src/lib/components/CliVersion.svelte

@@ -22,7 +22,9 @@
     if (installedVersion === "Loading..." || installedVersion === "Unknown") {
       return "neutral";
     }
-    const cmp = compareVersions(installedVersion, SUPPORTED_CLI_VERSION);
+    const semverMatch = /(\d+\.\d+\.\d+)/.exec(installedVersion);
+    if (!semverMatch) return "neutral";
+    const cmp = compareVersions(semverMatch[1], SUPPORTED_CLI_VERSION);
     if (cmp > 0) return "ahead";
     if (cmp < 0) return "behind";
     return "current";