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/stats/cache-analyzer.mjs

@@ -1,117 +0,0 @@
-// lib/stats/cache-analyzer.mjs
-// Summarizes trekexecute-stats.jsonl: total events, percentile wall times,
-// time range. Companion to event-emit.mjs (which produces the jsonl).
-//
-// Designed for /trekplan Spor C: gives C3 telemetry context when
-// interpreting Q3 experiment numbers (5+ weeks of accumulated data on the
-// operator's machine as of 2026-05-04).
-//
-// Zero npm dependencies. Node stdlib only.
-
-import { readFileSync, existsSync } from 'node:fs';
-
-function usage() {
-  return `cache-analyzer.mjs — summarize trekexecute-stats.jsonl
-
-USAGE:
-  node lib/stats/cache-analyzer.mjs --json <path-to-jsonl>
-
-OUTPUT (stdout, JSON):
-  {
-    "total_events": <n>,
-    "events_with_duration": <n>,
-    "wall_time_ms_p50": <ms or null>,
-    "wall_time_ms_p90": <ms or null>,
-    "wall_time_ms_max": <ms or null>,
-    "unique_event_names": [...],
-    "oldest_event_iso": "<iso8601 or null>",
-    "newest_event_iso": "<iso8601 or null>"
-  }
-
-EXIT:
-  0 success, 1 file not found / read error, 2 usage error.
-`;
-}
-
-export function summarize(lines) {
-  const summary = {
-    total_events: 0,
-    events_with_duration: 0,
-    wall_time_ms_p50: null,
-    wall_time_ms_p90: null,
-    wall_time_ms_max: null,
-    unique_event_names: [],
-    oldest_event_iso: null,
-    newest_event_iso: null,
-  };
-
-  const durations = [];
-  const names = new Set();
-  let oldestMs = null;
-  let newestMs = null;
-
-  for (const line of lines) {
-    const trimmed = line.trim();
-    if (trimmed === '') continue;
-    let obj;
-    try { obj = JSON.parse(trimmed); }
-    catch { continue; }
-    summary.total_events++;
-    if (obj.event && typeof obj.event === 'string') names.add(obj.event);
-    else if (obj.name && typeof obj.name === 'string') names.add(obj.name);
-    if (typeof obj.duration_ms === 'number' && Number.isFinite(obj.duration_ms)) {
-      durations.push(obj.duration_ms);
-      summary.events_with_duration++;
-    }
-    const tsField = obj.timestamp || obj.ts || obj.iso || obj.time;
-    if (typeof tsField === 'string') {
-      const t = Date.parse(tsField);
-      if (!Number.isNaN(t)) {
-        if (oldestMs === null || t < oldestMs) oldestMs = t;
-        if (newestMs === null || t > newestMs) newestMs = t;
-      }
-    }
-  }
-
-  if (durations.length > 0) {
-    durations.sort((a, b) => a - b);
-    const p50Idx = Math.floor(durations.length * 0.5);
-    const p90Idx = Math.floor(durations.length * 0.9);
-    summary.wall_time_ms_p50 = durations[Math.min(p50Idx, durations.length - 1)];
-    summary.wall_time_ms_p90 = durations[Math.min(p90Idx, durations.length - 1)];
-    summary.wall_time_ms_max = durations[durations.length - 1];
-  }
-
-  summary.unique_event_names = [...names].sort();
-  if (oldestMs !== null) summary.oldest_event_iso = new Date(oldestMs).toISOString();
-  if (newestMs !== null) summary.newest_event_iso = new Date(newestMs).toISOString();
-
-  return summary;
-}
-
-export function summarizeFile(path) {
-  if (!existsSync(path)) {
-    return { error: `file not found: ${path}` };
-  }
-  let text;
-  try { text = readFileSync(path, 'utf-8'); }
-  catch (e) { return { error: `read error: ${e.message}` }; }
-  return summarize(text.split('\n'));
-}
-
-if (import.meta.url === `file://${process.argv[1]}`) {
-  const args = process.argv.slice(2);
-  const jsonIdx = args.indexOf('--json');
-  if (jsonIdx === -1 || !args[jsonIdx + 1]) {
-    process.stderr.write(usage());
-    process.exit(2);
-  }
-  const path = args[jsonIdx + 1];
-  const result = summarizeFile(path);
-  if (result.error) {
-    process.stderr.write(`cache-analyzer: ${result.error}\n`);
-    process.exit(1);
-  }
-  process.stdout.write(JSON.stringify(result, null, 2) + '\n');
-  process.exit(0);
-}