feat(voyage)!: session-title hook COMMANDS map + voyage prefix [skip-docs]

- Replace 5 ultra*-local keys with trek* equivalents
- Add /trekcontinue + /trekendsession entries
- Change session title prefix ultra: -> voyage:

Part of voyage-rebrand session 2 (W3.1 / Step 3).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

plugins/ultraplan-local/hooks/scripts/session-title.mjs

@@ -17,11 +17,13 @@ import { stdin } from 'node:process';
 import { resolve, basename } from 'node:path';
 
 const COMMANDS = {
-  '/ultrabrief-local': 'brief',
-  '/ultraresearch-local': 'research',
-  '/ultraplan-local': 'plan',
-  '/ultraexecute-local': 'execute',
-  '/ultrareview-local': 'review',
+  '/trekbrief': 'brief',
+  '/trekresearch': 'research',
+  '/trekplan': 'plan',
+  '/trekexecute': 'execute',
+  '/trekreview': 'review',
+  '/trekcontinue': 'continue',
+  '/trekendsession': 'endsession',
 };
 
 function slugify(s) {
@@ -72,7 +74,7 @@ async function readStdin() {
     if (!matchedCmd) return;
 
     const slug = detectSlug(prompt);
-    const title = `ultra:${matchedCmd}:${slug}`;
+    const title = `voyage:${matchedCmd}:${slug}`;
 
     const out = {
       hookSpecificOutput: {