fix(cli): preserve multi-word commit messages in CLI router

The commit case in the CLI router reads only args[1] for the message,
which captures just the first word when the shell strips quotes before
passing arguments to Node.js. This silently truncates every multi-word
commit message (e.g. "docs(40): create phase plan" becomes "docs(40):").

Collect all positional args between the command name and the first
flag (--files, --amend), then join them. Works correctly whether the
shell preserves quotes (single arg) or strips them (multiple args).

Closes #733

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

get-shit-done/bin/gsd-tools.cjs

@@ -259,9 +259,13 @@ async function main() {
 
     case 'commit': {
       const amend = args.includes('--amend');
-      const message = args[1];
-      // Parse --files flag (collect args after --files, stopping at other flags)
       const filesIndex = args.indexOf('--files');
+      // Collect all positional args between command name and first flag,
+      // then join them — handles both quoted ("multi word msg") and
+      // unquoted (multi word msg) invocations from different shells
+      const endIndex = filesIndex !== -1 ? filesIndex : args.length;
+      const messageArgs = args.slice(1, endIndex).filter(a => !a.startsWith('--'));
+      const message = messageArgs.join(' ') || undefined;
       const files = filesIndex !== -1 ? args.slice(filesIndex + 1).filter(a => !a.startsWith('--')) : [];
       commands.cmdCommit(cwd, message, files, raw, amend);
       break;