diff --git a/tools/brain-config.mjs b/tools/brain-config.mjs
index dc06e8d..74d58eb 100644
--- a/tools/brain-config.mjs
+++ b/tools/brain-config.mjs
@@ -67,3 +67,11 @@ export function loadConfig(root = '.', fsImpl = fsDefault) {
   }
   return resolveConfig(parseBrainConfig(md));
 }
+
+/** fail-safe резолвер state_dir (§5.1): непустая строка → как есть; иначе → безопасный дефолт
+ *  .claude/brain-state + warnedFallback (НЕ тихий no-op — wiring издаёт warn и пишет в fallback). */
+export function resolveStateDir(value) {
+  const v = typeof value === 'string' ? value.trim() : '';
+  if (v.length > 0) return { stateDir: v, warnedFallback: false };
+  return { stateDir: '.claude/brain-state', warnedFallback: true };
+}
diff --git a/tools/brain-config.test.mjs b/tools/brain-config.test.mjs
index 52e6a61..646a62a 100644
--- a/tools/brain-config.test.mjs
+++ b/tools/brain-config.test.mjs
@@ -77,3 +77,19 @@ describe('resolveConfig protected_paths (Task 4 security, §D1/§D2)', () => {
       .toEqual(['secrets/keys']);
   });
 });
+
+import { resolveStateDir } from './brain-config.mjs';
+
+describe('resolveStateDir fail-safe (§D2)', () => {
+  it('непустая строка → как есть, без fallback', () => {
+    expect(resolveStateDir('docs/observer')).toEqual({ stateDir: 'docs/observer', warnedFallback: false });
+  });
+  it('пусто / пробелы → безопасный дефолт + warnedFallback', () => {
+    expect(resolveStateDir('')).toEqual({ stateDir: '.claude/brain-state', warnedFallback: true });
+    expect(resolveStateDir('   ')).toEqual({ stateDir: '.claude/brain-state', warnedFallback: true });
+  });
+  it('не-строка → безопасный дефолт + warnedFallback (не падает)', () => {
+    expect(resolveStateDir(null)).toEqual({ stateDir: '.claude/brain-state', warnedFallback: true });
+    expect(resolveStateDir(undefined)).toEqual({ stateDir: '.claude/brain-state', warnedFallback: true });
+  });
+});
diff --git a/tools/brain-retro-opus-reviewer.mjs b/tools/brain-retro-opus-reviewer.mjs
index 8ea4823..54a761a 100644
--- a/tools/brain-retro-opus-reviewer.mjs
+++ b/tools/brain-retro-opus-reviewer.mjs
@@ -42,7 +42,7 @@ const REQUIRED_REVIEW_FIELDS = [
  * The split is still applied so the moment either condition flips, caching
  * activates with zero further code changes.
  */
-export function buildReviewPromptStructured(episode) {
+export function buildReviewPromptStructured(episode, { classifierContext = 'Лидерра' } = {}) {
   const v = Number(episode?.schema_version) || 0;
   const cues = [
     'node_quality: correct | wrong_node | overkill | underkill | disputable',
@@ -66,7 +66,7 @@ export function buildReviewPromptStructured(episode) {
   }
 
   const system = [
-    'You are the independent reviewer of routing decisions for the Лидерра brain-governance experiment.',
+    `You are the independent reviewer of routing decisions for the ${classifierContext} brain-governance experiment.`,
     'Return ONLY a JSON object with the 8 fields below. No prose, no code fences.',
     '',
     'Fields:',
diff --git a/tools/brain-retro-opus-reviewer.test.mjs b/tools/brain-retro-opus-reviewer.test.mjs
index 9ab2120..dfe757a 100644
--- a/tools/brain-retro-opus-reviewer.test.mjs
+++ b/tools/brain-retro-opus-reviewer.test.mjs
@@ -114,3 +114,13 @@ describe('parseReview — 8-dim review schema (spec §4.6)', () => {
     expect(r?.reviewer_error).toBe('malformed episode');
   });
 });
+
+describe('buildReviewPromptStructured classifierContext (config-seam §D1)', () => {
+  it('дефолт → Лидерра', () => {
+    expect(buildReviewPromptStructured({ schema_version: 4 }).system).toContain('Лидерра');
+  });
+  it('classifierContext инъектируется', () => {
+    expect(buildReviewPromptStructured({ schema_version: 4 }, { classifierContext: 'ProjZ' }).system)
+      .toContain('ProjZ');
+  });
+});
diff --git a/tools/router-classifier.mjs b/tools/router-classifier.mjs
index 3d6479a..c13a782 100644
--- a/tools/router-classifier.mjs
+++ b/tools/router-classifier.mjs
@@ -288,12 +288,12 @@ export function buildClassifierPrompt(userPrompt, registry, { enrichment = true
  * Cache-eligibility: Sonnet requires ≥1024 tokens in the cached block.
  * Active node registry (~85 nodes × ~100 tokens) easily clears this.
  */
-export function buildClassifierPromptStructured(userPrompt, registry, { enrichment = true } = {}) {
+export function buildClassifierPromptStructured(userPrompt, registry, { enrichment = true, classifierContext = 'CRM-проекта «Лидерра» (Laravel 13 + Vue 3 + Vuetify 3)' } = {}) {
   const pamyatka = enrichment ? `\n\n${PAMYATKA}\n` : '\n';
   const nodesBlock = buildNodesBlock(registry);
   const chainsBlock = buildChainsBlock(registry);
 
-  const system = `Ты классификатор задач для CRM-проекта «Лидерра» (Laravel 13 + Vue 3 + Vuetify 3).
+  const system = `Ты классификатор задач для ${classifierContext}.
 
 ОБЯЗАТЕЛЬНЫЕ выходные правила:
 0. task_type — ОБЯЗАТЕЛЬНОЕ поле (ровно так, snake_case), одно из: feature, planning, bugfix, refactor, cleanup, marketing, security, analysis, monitoring, memory-sync, question, unknown.
@@ -557,7 +557,10 @@ export async function callAnthropicAPI(promptOrMessages, {
           if (onUsage && data.usage) {
             try { onUsage(data.usage); } catch { /* swallow callback errors */ }
           }
-          return data.content?.[0]?.text || '';
+          const _blocks = Array.isArray(data.content) ? data.content : [];
+          const _textBlock = _blocks.find((b) => b && b.type === 'text' && typeof b.text === 'string')
+            || _blocks.find((b) => b && typeof b.text === 'string');
+          return (_textBlock && _textBlock.text) || '';
         }
         // Retry on 5xx and 429; fail fast on 4xx (auth/quota/bad request — retry won't help).
         if (r.status >= 500 || r.status === 429) {
diff --git a/tools/router-classifier.test.mjs b/tools/router-classifier.test.mjs
index 02a8dbb..06fc394 100644
--- a/tools/router-classifier.test.mjs
+++ b/tools/router-classifier.test.mjs
@@ -654,3 +654,14 @@ describe('buildClassifierPromptStructured — requires task_type field (rasinhro
     expect(system).toContain('"task_type"');
   });
 });
+
+describe('buildClassifierPromptStructured classifierContext (config-seam §D1)', () => {
+  const reg = { nodes: [], chains: {} };
+  it('дефолт → текущая строка «Лидерра»', () => {
+    expect(buildClassifierPromptStructured('p', reg).system).toContain('«Лидерра»');
+  });
+  it('classifierContext инъектируется', () => {
+    expect(buildClassifierPromptStructured('p', reg, { classifierContext: 'ТестПроект XYZ' }).system)
+      .toContain('ТестПроект XYZ');
+  });
+});