feat(linkedin): v2.4.0 — editorial-reviewer agent + Step 5.5 craft gate in /linkedin:newsletter

Endring 8 from the change spec (Del 4 production, Maskinrommet). The persona
resonance sweep measures reader-response (does it land?); nothing measured prose
craft or narrative architecture (is it well-made?). In Del 4 every persona
reported PASS, yet the editor found 8 fresh editorial points on first reading —
~6/8 craft/architecture blind spots no agent could see. v2.4.0 adds the missing
editor role.

New Step 5.5 (editorial-review) runs between fact-check (Step 5) and the persona
sweep (Step 6): a new editorial-reviewer agent (Opus) judges two axes —
prosa-handverk (em-dash density, verbatim repetition, postulated numbers,
contradictions, versal-tic) + narrativ-arkitektur (concrete instantiation,
theory-anchored hypotheses, series-title symmetry, equal action per addressee,
un-overloaded conclusion). Returns <=10 flags as direction (never copy), each
BLOCK/REWORK/NICE, operator-gated via SendUserFile. Runs before the persona
sweep so the personas measure resonance instead of stumbling on craft noise.
Mirrors the Maskinrommet writing-contract section C2 (bidirectional mirror rule).

- agents/editorial-reviewer.md (NEW, Opus, orange) + fasit fixture
  (editorial-reviewer-cases.md: Del 4 v5 gold standard, 8 points -> 2 axes +
  severities, 3 BLOCK / 5 REWORK, 6/8 blind spots) + structural lint (7 tests).
- Step 5.5 wired into commands/newsletter.md; pipeline 14 -> 15 phases.
- editorial-review phase + additive editorialReview state in
  config/edition-state.template.json; resumption: factcheck-sweep -> Step 5.5,
  editorial-review -> Step 6 (spec said fact-check; canonical key is
  factcheck-sweep).
- persona-reviewer contract unchanged: editorial-reviewer is supplementary
  (one measures craft, one measures response).
- All doc levels synced (plugin + root README/CLAUDE.md, CHANGELOG, plugin.json
  2.3.0 -> 2.4.0; agents 15 -> 16). 94 tests green.

Acceptance-criterion #8 (live run on Del 4 v5) delivered as fasit fixture:
a live run needs a session reload (new agent not invokable until then) + read
access to the Del 4 v5 draft in Maskinrommet.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

plugins/linkedin-thought-leadership/agents/__tests__/editorial-reviewer-fixture.test.mjs

@@ -0,0 +1,87 @@
+import { describe, test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+
+// Lint-test for the editorial-reviewer fasit fixture.
+// Mirrors the structure-only discipline of persona-reviewer-fixture.test.mjs and
+// fact-checker-fixture.test.mjs: this test asserts the SHAPE of the fixture —
+// the two judging axes, all ten checks (P1–P5 + A1–A5), the three severities,
+// and the eight Del 4 cases that form the gold standard. Whether the agent's
+// live flags actually reproduce the fasit directions is [GATE]/[OPERATØR],
+// never self-certified here.
+
+const FIXTURE_PATH = fileURLToPath(
+  new URL('../fixtures/editorial-reviewer-cases.md', import.meta.url)
+);
+
+const fixture = readFileSync(FIXTURE_PATH, 'utf8');
+
+// The ten checks: five prose-craft (P1–P5) + five narrative-architecture (A1–A5).
+const PROSE_CHECKS = ['P1', 'P2', 'P3', 'P4', 'P5'];
+const ARCH_CHECKS = ['A1', 'A2', 'A3', 'A4', 'A5'];
+
+// The two axis names (Norwegian, as the agent and the writing contract use them).
+const AXES = ['prosa-håndverk', 'narrativ-arkitektur'];
+
+// The three-rung severity scale.
+const SEVERITIES = ['BLOCK', 'REWORK', 'NICE'];
+
+describe('editorial-reviewer fixture structure', () => {
+  test('names both judging axes', () => {
+    for (const axis of AXES) {
+      assert.ok(
+        new RegExp(axis, 'i').test(fixture),
+        `fixture must name the axis "${axis}"`
+      );
+    }
+  });
+
+  test('documents all ten checks (P1–P5 + A1–A5)', () => {
+    for (const check of [...PROSE_CHECKS, ...ARCH_CHECKS]) {
+      assert.ok(
+        fixture.includes(check),
+        `fixture must reference the check "${check}"`
+      );
+    }
+  });
+
+  test('defines the three-rung severity scale', () => {
+    for (const sev of SEVERITIES) {
+      assert.ok(
+        fixture.includes(sev),
+        `fixture must define the severity "${sev}"`
+      );
+    }
+  });
+
+  test('documents the eight Del 4 cases', () => {
+    const cases = fixture.match(/^###\s+Case\s+\d+\b/gim) || [];
+    assert.equal(
+      cases.length,
+      8,
+      `fixture must document exactly 8 Del 4 cases (found ${cases.length})`
+    );
+  });
+
+  test('ties the checklist to the Maskinrommet §C2 truth source', () => {
+    assert.ok(
+      /§C2|C2/.test(fixture),
+      'fixture must reference the §C2 writing-contract truth source'
+    );
+  });
+
+  test('keeps the jury-judges-writer-writes boundary (direction, not copy)', () => {
+    assert.ok(
+      /direction, not rewritten copy/i.test(fixture),
+      'fixture must state the direction-not-copy boundary'
+    );
+  });
+
+  test('records the persona-blindspot rationale (≈6/8 editorial-only)', () => {
+    assert.ok(
+      /blindsone/i.test(fixture) && /6\/8/.test(fixture),
+      'fixture must record why the gate exists (blind spots, ~6/8 editorial-only)'
+    );
+  });
+});