chore(voyage): release v5.7.0 — opt-in token/cost metering (SKAL-2) + eval foundation (SKAL-1·4a)

Additive, no breaking change. Bundles the unreleased work since v5.6.1:
SKAL-2 token/cost metering (parser+cache-aware cost, CWE-212 export boundary,
cache-analyzer aggregation, opt-in VOYAGE_TOKEN_METER Stop-hook capture) and
SKAL-1·4a eval foundation (gold corpus, review-coordinator contract, BRIEF_*
gate coverage). Version sync across 5 refs + CHANGELOG; canonical node --test 807.

.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "voyage",
   "description": "Voyage — brief, research, plan, execute, review, continue. Contract-driven Claude Code pipeline. /trekbrief, /trekplan, and /trekreview each end by building a self-contained operator-annotation HTML (scripts/annotate.mjs, modelled on claude-code-100x): select text or click any element, pick intent (Fiks/Endre/Spørsmål), write comment, copy structured prompt, paste back, Claude revises the .md.",
-  "version": "5.6.1",
+  "version": "5.7.0",
   "author": {
     "name": "Kjell Tore Guttormsen"
   },

CHANGELOG.md

@@ -4,6 +4,26 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## v5.7.0 — 2026-06-26 — opt-in token/cost metering (SKAL-2) + eval foundation (SKAL-1·4a)
+
+Additive — no breaking change. Two unreleased work-streams land together.
+
+### Opt-in token/cost metering (SKAL-2) — the headline
+
+- Pure token-usage parser + cache-aware USD cost (`lib/stats/token-usage.mjs`): parses MAIN-CONTEXT usage from the transcript, dedups by requestId (last-wins, streaming-placeholder mitigation), excludes sidechain records, and REFUSES to estimate (`cost_usd:null, is_estimate:true`) for models absent from the frozen PRICE_TABLE.
+- CWE-212 export boundary: token-usage schema allowlist in the OTLP exporter; `session_id`/`transcript_path`/`cwd` stripped at export, asserted both ways.
+- Cross-session aggregation in `cache-analyzer` (total tokens + cost).
+- Capture folded into the EXISTING `otel-export.mjs` Stop hook, gated behind the `VOYAGE_TOKEN_METER` env var (default off), fail-open. v1 scope = main-context only; sub-agent turns are a documented v2 follow-on.
+
+### Eval foundation (SKAL-1·4a)
+
+- `gold.json` golden corpus + loader/validator; review-coordinator contract reference impl + deterministic test; two-sided gate coverage for the `BRIEF_*` BLOCKERs; eval-corpus frozen-failure home.
+
+### Release hygiene
+
+- Version sync: `plugin.json`, `package.json`, `package-lock.json`, README badge, CHANGELOG top entry all at `5.7.0`, guarded by `doc-consistency.test.mjs`.
+- Canonical `node --test`: **807** (805 pass / 0 fail / 2 skipped).
+
 ## v5.6.1 — 2026-06-24 — leaner always-loaded agent listing (reference/dormant agent descriptions trimmed)
 
 Additive — no breaking change, **no runtime behavior change**. Trims the always-loaded token cost of the agent listing that Claude Code injects into every session.

README.md

@@ -1,6 +1,6 @@
 # trekplan — Brief, Research, Plan, Execute, Review, Continue
 
-![Version](https://img.shields.io/badge/version-5.6.1-blue)
+![Version](https://img.shields.io/badge/version-5.7.0-blue)
 ![License](https://img.shields.io/badge/license-MIT-green)
 ![Platform](https://img.shields.io/badge/platform-Claude%20Code-purple)
 

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "voyage",
-  "version": "5.6.1",
+  "version": "5.7.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "voyage",
-      "version": "5.6.1",
+      "version": "5.7.0",
       "license": "MIT",
       "engines": {
         "node": ">=18"

package.json

@@ -1,6 +1,6 @@
 {
   "name": "voyage",
-  "version": "5.6.1",
+  "version": "5.7.0",
   "description": "Voyage — brief, research, plan, execute, review, continue. Contract-driven Claude Code pipeline. /trekbrief, /trekplan, and /trekreview each end by building a self-contained operator-annotation HTML (scripts/annotate.mjs, modelled on claude-code-100x): select text or click any heading/paragraph/list-item, pick intent (Fiks/Endre/Spørsmål), write comment, copy structured prompt, paste back, Claude revises the .md.",
   "type": "module",
   "engines": {