fix(cli): fast-path --version to skip full CLI bootstrap

`omniroute --version` ran the entire CLI bootstrap before printing the
version: the tsx/esm + polyfill imports, env-file loading, and
Commander's ~70-command registration (importing DB, providers, OAuth,
and other heavy modules). That took ~1.5s just to print a version
string.

Add isVersionFastPath() (bin/cli/utils/versionFastPath.mjs) and check it
at the very top of bin/omniroute.mjs, before any of that work runs. It
only trips for an unambiguous bare `--version`/`-V` invocation (no other
args), so it never changes behavior for real commands or for `--help`
(whose output is generated dynamically from every registered
subcommand, so it still needs full registration and is deliberately not
fast-pathed).

`--version` now returns in ~0.3s instead of ~1.5s locally.

Co-authored-by: Sutarto Jordan Chrisfivo <Jordannst@users.noreply.github.com>
Inspired-by: https://github.com/decolua/9router/pull/2414

bin/cli/utils/versionFastPath.mjs

@@ -0,0 +1,25 @@
+/**
+ * Decide whether a CLI invocation is a bare `--version`/`-V` query that should
+ * short-circuit BEFORE the runtime polyfill import, env-file loading, and
+ * Commander's command registration (~70 command modules) are loaded.
+ *
+ * Scope is intentionally narrow — only a single, unambiguous `--version`/`-V`
+ * argument fast-paths. Anything else (extra args, a subcommand, `--help`,
+ * global options like `--lang`/`--output` alongside it) falls through to the
+ * normal Commander flow. Unlike `--version`, OmniRoute's `--help` output is
+ * generated dynamically from every registered subcommand, so skipping
+ * registration would change (truncate) the help text — that flag is
+ * deliberately NOT fast-pathed here.
+ *
+ * Mirrors the intent of upstream 9router PR #2414 (fast-path help/version
+ * before expensive self-heal hooks), adapted to OmniRoute's Commander-based
+ * CLI where the equivalent expensive work is eager command registration
+ * rather than npm-install-based runtime self-healing.
+ *
+ * @param {string[]} argv - process.argv (node + script + args).
+ * @returns {boolean}
+ */
+export function isVersionFastPath(argv) {
+  const args = Array.isArray(argv) ? argv.slice(2) : [];
+  return args.length === 1 && (args[0] === "--version" || args[0] === "-V");
+}