feat: brain-config classifyFilePath стемы нормативки config-driven — greenfield #3 observer

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tools/observer-transcript-parser.test.mjs

@@ -1900,6 +1900,27 @@ describe('classifyFilePath — Pass 3 path-pattern bucketing (project-brain-fact
   });
 });
 
+describe('classifyFilePath — config-driven normative stems (greenfield #3-observer)', () => {
+  it('custom stem matches a greenfield normative doc', () => {
+    expect(classifyFilePath('docs/MyRules_v2.md', ['MyRules'])).toBe('norm');
+  });
+  it('custom stems excluding Лидерра docs → those are not norm', () => {
+    expect(classifyFilePath('docs/Pravila_raboty_Claude_v1_1.md', ['MyRules'])).toBe('other');
+  });
+  it('empty stems → Лидерра doc not norm, universal CLAUDE.md/memory still norm', () => {
+    expect(classifyFilePath('docs/Tooling_v8_3.md', [])).toBe('other');
+    expect(classifyFilePath('CLAUDE.md', [])).toBe('norm');
+    expect(classifyFilePath('C:\\Users\\x\\.claude\\projects\\p\\memory\\f.md', [])).toBe('norm');
+  });
+  it('default (no stems arg) keeps current 3 Лидерра stems as norm', () => {
+    expect(classifyFilePath('docs/Plugin_stack_rules_v1.md')).toBe('norm');
+  });
+  it('extractFileTypeDistribution threads custom normativeStems', () => {
+    expect(extractFileTypeDistribution(['docs/MyRules_v2.md'], ['MyRules']).norm).toBe(1);
+    expect(extractFileTypeDistribution(['docs/MyRules_v2.md'], []).norm).toBe(0);
+  });
+});
+
 describe('extractFileTypeDistribution — Pass 3 (project-brain-factor-analysis-4passes)', () => {
   it('counts each path bucket and zero-fills missing categories', () => {
     const dist = extractFileTypeDistribution([