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/ultraplan-local/lib/util/frontmatter.mjs

@@ -1,158 +0,0 @@
-// lib/util/frontmatter.mjs
-// Hand-rolled YAML-frontmatter parser.
-//
-// Supported subset:
-//   - String scalars (quoted or unquoted)
-//   - Numbers (integer + float)
-//   - Booleans (true / false)
-//   - null
-//   - Single-level dicts
-//   - Lists of scalars (- value)
-//
-// Deliberately rejects: nested dicts in lists, multi-line strings,
-// anchors/aliases, tags, flow style ({...} / [...]).
-//
-// Why no js-yaml: zero-deps invariant. Templates emit only this subset.
-
-import { issue, ok, fail } from './result.mjs';
-
-const FRONTMATTER_RE = /^?---\r?\n([\s\S]*?)\r?\n---(?:\r?\n([\s\S]*))?$/;
-
-/**
- * Split raw markdown into { frontmatter, body }.
- * Returns { hasFrontmatter: false } when no leading --- block exists.
- */
-export function splitFrontmatter(text) {
-  if (typeof text !== 'string') return { hasFrontmatter: false, body: '' };
-  const stripped = text.replace(/^/, '');
-  const m = stripped.match(/^---\r?\n([\s\S]*?)\r?\n---(?:\r?\n([\s\S]*))?$/);
-  if (!m) return { hasFrontmatter: false, body: stripped };
-  return {
-    hasFrontmatter: true,
-    frontmatter: m[1],
-    body: m[2] || '',
-  };
-}
-
-/**
- * Parse a YAML-frontmatter string into a JS object.
- * @returns {import('./result.mjs').Result}
- */
-export function parseFrontmatter(yamlText) {
-  if (typeof yamlText !== 'string') {
-    return fail(issue('FM_INPUT', 'Frontmatter input is not a string'));
-  }
-  const lines = yamlText.split(/\r?\n/);
-  const out = {};
-  const errors = [];
-
-  let i = 0;
-  while (i < lines.length) {
-    const line = lines[i];
-
-    if (line.trim() === '' || line.trimStart().startsWith('#')) {
-      i++;
-      continue;
-    }
-
-    const indentMatch = line.match(/^(\s*)/);
-    const indent = indentMatch ? indentMatch[0].length : 0;
-    if (indent > 0) {
-      errors.push(issue('FM_INDENT', `Unexpected indentation at line ${i + 1}`, 'Top-level keys only; nested dicts unsupported.'));
-      i++;
-      continue;
-    }
-
-    const kv = line.match(/^([A-Za-z_][A-Za-z0-9_-]*)\s*:\s*(.*)$/);
-    if (!kv) {
-      errors.push(issue('FM_SYNTAX', `Cannot parse line ${i + 1}: ${line}`));
-      i++;
-      continue;
-    }
-
-    const key = kv[1];
-    const rest = kv[2];
-
-    if (rest === '' || rest === undefined) {
-      const list = [];
-      let j = i + 1;
-      while (j < lines.length) {
-        const next = lines[j];
-        if (next.trim() === '') { j++; continue; }
-        const itemMatch = next.match(/^(\s+)-\s+(.*)$/);
-        if (!itemMatch) break;
-        const itemIndent = itemMatch[1].length;
-        const firstContent = itemMatch[2];
-        const dictKeyMatch = firstContent.match(/^([A-Za-z_][A-Za-z0-9_-]*)\s*:\s*(.*)$/);
-        if (dictKeyMatch) {
-          const item = {};
-          item[dictKeyMatch[1]] = parseScalar(dictKeyMatch[2]);
-          let k = j + 1;
-          while (k < lines.length) {
-            const cont = lines[k];
-            if (cont.trim() === '') { k++; continue; }
-            const contMatch = cont.match(/^(\s+)([A-Za-z_][A-Za-z0-9_-]*)\s*:\s*(.*)$/);
-            if (!contMatch) break;
-            if (contMatch[1].length <= itemIndent + 1) break;
-            item[contMatch[2]] = parseScalar(contMatch[3]);
-            k++;
-          }
-          list.push(item);
-          j = k;
-        } else {
-          list.push(parseScalar(firstContent));
-          j++;
-        }
-      }
-      if (list.length > 0) {
-        out[key] = list;
-        i = j;
-      } else {
-        out[key] = null;
-        i++;
-      }
-      continue;
-    }
-
-    out[key] = parseScalar(rest);
-    i++;
-  }
-
-  if (errors.length > 0) return { valid: false, errors, warnings: [], parsed: out };
-  return ok(out);
-}
-
-function parseScalar(raw) {
-  const s = raw.trim();
-  if (s === '') return '';
-  if (s === 'null' || s === '~') return null;
-  if (s === 'true') return true;
-  if (s === 'false') return false;
-  if (s === '[]') return [];
-  if (s === '{}') return {};
-  if (/^-?\d+$/.test(s)) return Number.parseInt(s, 10);
-  if (/^-?\d+\.\d+$/.test(s)) return Number.parseFloat(s);
-  if (s.startsWith('"') && s.endsWith('"')) {
-    return s.slice(1, -1).replace(/\\(.)/g, (_, ch) => {
-      if (ch === 'n') return '\n';
-      if (ch === 't') return '\t';
-      if (ch === 'r') return '\r';
-      return ch;
-    });
-  }
-  if (s.startsWith("'") && s.endsWith("'")) return s.slice(1, -1);
-  return s;
-}
-
-/**
- * Parse a markdown file's frontmatter directly from its full text.
- * @returns {import('./result.mjs').Result}
- */
-export function parseDocument(text) {
-  const split = splitFrontmatter(text);
-  if (!split.hasFrontmatter) {
-    return fail(issue('FM_MISSING', 'No frontmatter block found'));
-  }
-  const result = parseFrontmatter(split.frontmatter);
-  return { ...result, parsed: { frontmatter: result.parsed, body: split.body } };
-}