feat(voyage)!: marketplace handoff — rename plugins/ultraplan-local to plugins/voyage [skip-docs]

Session 5 of voyage-rebrand (V6). Operator-authorized cross-plugin scope.

- git mv plugins/ultraplan-local plugins/voyage (rename detected, history preserved)
- .claude-plugin/marketplace.json: voyage entry replaces ultraplan-local
- CLAUDE.md: voyage row in plugin list, voyage in design-system consumer list
- README.md: bulk rename ultra*-local commands -> trek* commands; ultraplan-local refs -> voyage; type discriminators (type: trekbrief/trekreview); session-title pattern (voyage:<command>:<slug>); v4.0.0 release-note paragraph
- plugins/voyage/.claude-plugin/plugin.json: homepage/repository URLs point to monorepo voyage path
- plugins/voyage/verify.sh: drop URL whitelist exception (no longer needed)

Closes voyage-rebrand. bash plugins/voyage/verify.sh PASS 7/7. npm test 361/361.

plugins/voyage/hooks/scripts/session-title.mjs

@@ -0,0 +1,89 @@
+#!/usr/bin/env node
+// session-title.mjs — UserPromptSubmit hook (CC v2.1.94+)
+//
+// Sets a sessionTitle when the user invokes one of the four voyage commands,
+// so multi-session headless runs are easy to identify in process lists and
+// session pickers.
+//
+// Title format: voyage:<command>:<slug>
+//   - <command> ∈ {brief, research, plan, execute, review}
+//   - <slug>    ∈ first 30 chars of project slug, or "ad-hoc" when no
+//                  --project / --brief context is detected
+//
+// Fail-open invariant: any error → exit 0 with no output. We never block
+// the user's prompt.
+
+import { stdin } from 'node:process';
+import { resolve, basename } from 'node:path';
+
+const COMMANDS = {
+  '/trekbrief': 'brief',
+  '/trekresearch': 'research',
+  '/trekplan': 'plan',
+  '/trekexecute': 'execute',
+  '/trekreview': 'review',
+  '/trekcontinue': 'continue',
+  '/trekendsession': 'endsession',
+};
+
+function slugify(s) {
+  return String(s)
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, '-')
+    .replace(/^-+|-+$/g, '')
+    .slice(0, 30) || 'ad-hoc';
+}
+
+function detectSlug(prompt) {
+  const projectMatch = prompt.match(/--project[=\s]+(\S+)/);
+  if (projectMatch) {
+    const dir = projectMatch[1].replace(/['"]/g, '');
+    const base = basename(resolve(dir));
+    const dateStripped = base.replace(/^\d{4}-\d{2}-\d{2}-/, '');
+    return slugify(dateStripped);
+  }
+  const briefMatch = prompt.match(/--brief[=\s]+(\S+)/);
+  if (briefMatch) {
+    const file = briefMatch[1].replace(/['"]/g, '');
+    return slugify(basename(file, '.md'));
+  }
+  return 'ad-hoc';
+}
+
+async function readStdin() {
+  let data = '';
+  for await (const chunk of stdin) data += chunk;
+  return data;
+}
+
+(async () => {
+  try {
+    const raw = await readStdin();
+    if (!raw.trim()) return;
+    const payload = JSON.parse(raw);
+    const prompt = String(payload.prompt || '').trim();
+    if (!prompt) return;
+
+    let matchedCmd = null;
+    for (const [cmd, short] of Object.entries(COMMANDS)) {
+      if (prompt.startsWith(cmd)) {
+        matchedCmd = short;
+        break;
+      }
+    }
+    if (!matchedCmd) return;
+
+    const slug = detectSlug(prompt);
+    const title = `voyage:${matchedCmd}:${slug}`;
+
+    const out = {
+      hookSpecificOutput: {
+        hookEventName: 'UserPromptSubmit',
+        sessionTitle: title,
+      },
+    };
+    process.stdout.write(JSON.stringify(out) + '\n');
+  } catch {
+    // fail open
+  }
+})();