diff --git a/.claude/settings.json b/.claude/settings.json
index b40b0a6c..b77f3fe0 100644
--- a/.claude/settings.json
+++ b/.claude/settings.json
@@ -115,6 +115,16 @@
             "timeout": 5
           }
         ]
+      },
+      {
+        "matcher": "Bash",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "node tools/enforce-semgrep-security.mjs",
+            "timeout": 10
+          }
+        ]
       }
     ],
     "PostToolUse": [
diff --git a/tools/enforce-hook-helpers.mjs b/tools/enforce-hook-helpers.mjs
index d2c1783c..fe4a48f7 100644
--- a/tools/enforce-hook-helpers.mjs
+++ b/tools/enforce-hook-helpers.mjs
@@ -150,6 +150,19 @@ export function parseCoverageLine(text) {
   return { channel: m[1].toLowerCase(), id: m[2] };
 }
 
+export function sessionToolUses(entries) {
+  if (!Array.isArray(entries)) return [];
+  const uses = [];
+  for (const e of entries) {
+    const c = e && e.message && e.message.content;
+    if (!Array.isArray(c)) continue;
+    for (const b of c) {
+      if (b && b.type === 'tool_use') uses.push({ name: b.name, input: b.input || {} });
+    }
+  }
+  return uses;
+}
+
 export function turnToolUses(entries) {
   const turn = lastTurnEntries(entries);
   const uses = [];
diff --git a/tools/enforce-hook-helpers.test.mjs b/tools/enforce-hook-helpers.test.mjs
index bea8cc0c..675bd191 100644
--- a/tools/enforce-hook-helpers.test.mjs
+++ b/tools/enforce-hook-helpers.test.mjs
@@ -20,8 +20,44 @@ import {
   isDocsOnlyChange,
   detectGitCommandKind,
   detectFullTestRun,
+  sessionToolUses,
 } from './enforce-hook-helpers.mjs';
 
+describe('sessionToolUses', () => {
+  it('returns ALL tool uses across the full session, not just last turn', () => {
+    const entries = [
+      // turn 1
+      { type: 'user', message: { content: [{ type: 'text', text: 'first' }] } },
+      { type: 'assistant', message: { content: [{ type: 'tool_use', name: 'Bash', input: { command: 'echo a' } }] } },
+      // turn 2
+      { type: 'user', message: { content: [{ type: 'text', text: 'second' }] } },
+      { type: 'assistant', message: { content: [{ type: 'tool_use', name: 'Bash', input: { command: 'composer sast' } }] } },
+      // turn 3 (current)
+      { type: 'user', message: { content: [{ type: 'text', text: 'third' }] } },
+      { type: 'assistant', message: { content: [{ type: 'tool_use', name: 'Bash', input: { command: 'git status' } }] } },
+    ];
+    const uses = sessionToolUses(entries);
+    expect(uses).toHaveLength(3);
+    expect(uses.map(u => u.input.command)).toEqual(['echo a', 'composer sast', 'git status']);
+  });
+
+  it('returns [] for empty entries', () => {
+    expect(sessionToolUses([])).toEqual([]);
+  });
+
+  it('skips non-tool_use blocks', () => {
+    const entries = [
+      { type: 'assistant', message: { content: [
+        { type: 'text', text: 'hi' },
+        { type: 'tool_use', name: 'Bash', input: { command: 'pwd' } },
+      ] } },
+    ];
+    const uses = sessionToolUses(entries);
+    expect(uses).toHaveLength(1);
+    expect(uses[0].name).toBe('Bash');
+  });
+});
+
 describe('parseEventJson', () => {
   it('parses well-formed JSON', () => {
     expect(parseEventJson('{"a":1}')).toEqual({ a: 1 });
diff --git a/tools/enforce-override-vocab.json b/tools/enforce-override-vocab.json
index 9b5f9fd7..ea831016 100644
--- a/tools/enforce-override-vocab.json
+++ b/tools/enforce-override-vocab.json
@@ -4,37 +4,89 @@
   "phrases": [
     {
       "phrase": "без скилов",
-      "suppresses": ["skill-required", "coverage-skill-match", "classifier-mismatch", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "skill-required",
+        "coverage-skill-match",
+        "classifier-mismatch",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "description": "Skill discipline relaxed for this one prompt"
     },
     {
       "phrase": "direct ok",
-      "suppresses": ["skill-required", "coverage-skill-match", "classifier-mismatch", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "skill-required",
+        "coverage-skill-match",
+        "classifier-mismatch",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "description": "Direct work allowed without skill invocation"
     },
     {
       "phrase": "срочно",
-      "suppresses": ["verify-before-commit", "verify-before-push", "tdd-gate", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "verify-before-commit",
+        "verify-before-push",
+        "tdd-gate",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "description": "Urgency override: skip verification + TDD gate + graph/chain enforcement"
     },
     {
       "phrase": "быстрый коммит",
-      "suppresses": ["verify-before-commit", "tdd-gate", "writing-plans-required", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "verify-before-commit",
+        "tdd-gate",
+        "writing-plans-required",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "description": "Quick commit: skip TDD + verify + plans + graph/chain enforcement"
     },
     {
       "phrase": "recovery",
-      "suppresses": ["branch-switch", "git-recovery", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "branch-switch",
+        "git-recovery",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "description": "Git recovery operation, branch-state mismatch ok"
     },
     {
       "phrase": "memory dump",
-      "suppresses": ["memory-sync-coverage", "skill-required", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "memory-sync-coverage",
+        "skill-required",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "description": "Memory write without separate coverage announcement"
     },
     {
       "phrase": "ремонт инфраструктуры",
-      "suppresses": ["tdd-gate", "verify-before-commit", "verify-before-push", "writing-plans-required", "skill-required", "memory-sync-coverage", "classifier-mismatch", "coverage-skill-match", "graph-first", "chain-recommendation"],
+      "suppresses": [
+        "tdd-gate",
+        "verify-before-commit",
+        "verify-before-push",
+        "writing-plans-required",
+        "skill-required",
+        "memory-sync-coverage",
+        "classifier-mismatch",
+        "coverage-skill-match",
+        "graph-first",
+        "chain-recommendation",
+        "semgrep-security"
+      ],
       "requires_justification": "ремонт:",
       "description": "Bypass all rules (full opt-out). Requires 'ремонт: <what>' line in same prompt."
     }
diff --git a/tools/enforce-semgrep-security.mjs b/tools/enforce-semgrep-security.mjs
new file mode 100644
index 00000000..fa5d1ee2
--- /dev/null
+++ b/tools/enforce-semgrep-security.mjs
@@ -0,0 +1,135 @@
+#!/usr/bin/env node
+/**
+ * Rule — Semgrep on security-edit.
+ *
+ * PreToolUse Bash hook. When the controller invokes `git commit` and the staged
+ * diff includes auth/billing/CSV/webhook files but Semgrep has not been run in
+ * this session, block with remediation instructions.
+ *
+ * Three escape hatches:
+ *   1. Run Semgrep first via Bash (`npm run sast`, `semgrep ...`).
+ *   2. Write semgrep-skip: <non-empty reason> on a line in the assistant text.
+ *   3. User prompt contains a global override phrase (vocab-driven).
+ *
+ * Spec: self-retrospect 28.05 habit #4. brain-retro #9 + retro-7 background.
+ */
+
+import { execFileSync } from 'child_process';
+import {
+  readStdin,
+  parseEventJson,
+  readTranscript,
+  lastUserPromptText,
+  lastAssistantText,
+  sessionToolUses,
+  findOverride,
+  logOverride,
+  exitDecision,
+} from './enforce-hook-helpers.mjs';
+
+const RULE_KEY = 'semgrep-security';
+const GIT_COMMIT_RE = /^\s*git\s+commit\b/;
+const SEMGREP_SKIP_RE = /^semgrep-skip:\s*\S+/m;
+const SEMGREP_CMD_RE = /\b(semgrep\b|composer\s+sast\b|npm\s+run\s+sast\b)/i;
+
+const SECURITY_PATH_PATTERNS = [
+  /(?:^|\/)(?:Auth|Authenticate|Authenticated|Authorization|Authorize)\b/i,
+  /Billing/i,
+  /Ledger/i,
+  /(?:Csv|CSV)/i,
+  /(?:^|\/)Imports\b/i,
+  /Webhook/i,
+];
+
+export function isSecurityRelevantPath(path) {
+  if (!path || typeof path !== 'string') return false;
+  const norm = path.replace(/\\/g, '/');
+  for (const re of SECURITY_PATH_PATTERNS) {
+    if (re.test(norm)) return true;
+  }
+  return false;
+}
+
+export function extractStagedFiles(stdout) {
+  if (!stdout || typeof stdout !== 'string') return [];
+  return stdout.split('\n').map((s) => s.trim()).filter(Boolean);
+}
+
+export function sessionRanSemgrep(toolUses) {
+  if (!Array.isArray(toolUses)) return false;
+  for (const u of toolUses) {
+    if (!u || u.name !== 'Bash') continue;
+    const cmd = String((u.input && u.input.command) || '');
+    if (SEMGREP_CMD_RE.test(cmd)) return true;
+  }
+  return false;
+}
+
+export function decide({ command, stagedFiles, semgrepRan, assistantText, override }) {
+  // Step 1: only act on git commit invocations.
+  if (typeof command !== 'string' || !GIT_COMMIT_RE.test(command)) return { block: false };
+
+  // Step 2: global override -> pass.
+  if (override) return { block: false };
+
+  // Step 3: identify security-relevant staged files.
+  const security = (Array.isArray(stagedFiles) ? stagedFiles : []).filter(isSecurityRelevantPath);
+  if (security.length === 0) return { block: false };
+
+  // Step 4: Semgrep already ran this session -> pass.
+  if (semgrepRan) return { block: false };
+
+  // Step 5: inline semgrep-skip with non-empty reason -> pass.
+  if (typeof assistantText === 'string' && SEMGREP_SKIP_RE.test(assistantText)) return { block: false };
+
+  // Step 6: block.
+  const list = security.slice(0, 5).map((p) => '    - ' + p).join('\n');
+  const extra = security.length > 5 ? '    ... (+' + (security.length - 5) + ' ещё)\n' : '';
+  const message = [
+    '[enforce-semgrep-security] В коммите есть ' + security.length + ' файл(ов) с security-влиянием (auth/billing/CSV/webhook):',
+    list + (extra ? '\n' + extra : ''),
+    'но Semgrep не запускался в этой сессии (self-retrospect 28.05 привычка #4).',
+    'Сделай ОДНО из трёх:',
+    '  1. Запусти Semgrep на diff: `npm run sast` (или `semgrep scan --config p/php app/`).',
+    '  2. Добавь строку semgrep-skip: <одна строка причины> в свой ответ.',
+    '  3. Попроси у пользователя глобальный override (без скилов / direct ok / срочно / быстрый коммит / recovery / memory dump / ремонт инфраструктуры).',
+  ].join('\n');
+
+  return { block: true, message };
+}
+
+function readStagedFilesSafe() {
+  try {
+    const out = execFileSync('git', ['diff', '--cached', '--name-only'], { encoding: 'utf-8' });
+    return extractStagedFiles(out);
+  } catch {
+    return [];
+  }
+}
+
+async function main() {
+  try {
+    const raw = await readStdin();
+    const event = parseEventJson(raw);
+    if (event.tool_name !== 'Bash') { exitDecision({ block: false }); return; }
+    const command = String((event.tool_input && event.tool_input.command) || '');
+    if (!GIT_COMMIT_RE.test(command)) { exitDecision({ block: false }); return; }
+
+    const transcript = readTranscript(event.transcript_path);
+    const userPrompt = lastUserPromptText(transcript);
+    const assistantText = lastAssistantText(transcript);
+    const sessionUses = sessionToolUses(transcript);
+    const override = findOverride(userPrompt, RULE_KEY);
+    if (override) logOverride(RULE_KEY, override, event.session_id);
+
+    const stagedFiles = readStagedFilesSafe();
+    const semgrepRan = sessionRanSemgrep(sessionUses);
+
+    exitDecision(decide({ command, stagedFiles, semgrepRan, assistantText, override }));
+  } catch {
+    exitDecision({ block: false });
+  }
+}
+
+const isCli = process.argv[1] && process.argv[1].replace(/\\/g, '/').endsWith('/enforce-semgrep-security.mjs');
+if (isCli) main();
\ No newline at end of file
diff --git a/tools/enforce-semgrep-security.test.mjs b/tools/enforce-semgrep-security.test.mjs
new file mode 100644
index 00000000..2adf269f
--- /dev/null
+++ b/tools/enforce-semgrep-security.test.mjs
@@ -0,0 +1,180 @@
+import { describe, it, expect } from 'vitest';
+import { decide, extractStagedFiles, isSecurityRelevantPath, sessionRanSemgrep } from './enforce-semgrep-security.mjs';
+import { findOverride } from './enforce-hook-helpers.mjs';
+
+describe('isSecurityRelevantPath', () => {
+  it('matches auth files', () => {
+    expect(isSecurityRelevantPath('app/Http/Controllers/Auth/LoginController.php')).toBe(true);
+    expect(isSecurityRelevantPath('app/Http/Middleware/Authenticate.php')).toBe(true);
+  });
+  it('matches billing/ledger files', () => {
+    expect(isSecurityRelevantPath('app/Services/BillingService.php')).toBe(true);
+    expect(isSecurityRelevantPath('app/Services/LedgerService.php')).toBe(true);
+  });
+  it('matches CSV import/export files', () => {
+    expect(isSecurityRelevantPath('app/Imports/SupplierLeadsImport.php')).toBe(true);
+    expect(isSecurityRelevantPath('app/Jobs/CsvReconcileJob.php')).toBe(true);
+    expect(isSecurityRelevantPath('app/Http/Controllers/DealCsvController.php')).toBe(true);
+  });
+  it('matches webhook files', () => {
+    expect(isSecurityRelevantPath('app/Http/Controllers/SupplierWebhookController.php')).toBe(true);
+    expect(isSecurityRelevantPath('app/Services/WebhookSignatureVerifier.php')).toBe(true);
+  });
+  it('does NOT match docs/normal files', () => {
+    expect(isSecurityRelevantPath('docs/superpowers/plans/2026-05-28-phase4.md')).toBe(false);
+    expect(isSecurityRelevantPath('memory/feedback_communication.md')).toBe(false);
+    expect(isSecurityRelevantPath('app/Models/Tenant.php')).toBe(false);
+    expect(isSecurityRelevantPath('app/Http/Controllers/HomeController.php')).toBe(false);
+  });
+  it('returns false for null/empty', () => {
+    expect(isSecurityRelevantPath(null)).toBe(false);
+    expect(isSecurityRelevantPath('')).toBe(false);
+  });
+});
+
+describe('extractStagedFiles', () => {
+  it('parses git diff --cached --name-only output', () => {
+    const stdout = 'app/Services/BillingService.php\napp/Models/Deal.php\n';
+    expect(extractStagedFiles(stdout)).toEqual([
+      'app/Services/BillingService.php',
+      'app/Models/Deal.php',
+    ]);
+  });
+  it('skips blank lines', () => {
+    expect(extractStagedFiles('a.php\n\nb.php\n')).toEqual(['a.php', 'b.php']);
+  });
+  it('returns [] for empty stdout', () => {
+    expect(extractStagedFiles('')).toEqual([]);
+    expect(extractStagedFiles(null)).toEqual([]);
+  });
+});
+
+describe('sessionRanSemgrep', () => {
+  it('returns true when a Bash tool_use ran semgrep CLI', () => {
+    const sessionUses = [
+      { name: 'Bash', input: { command: 'pwd' } },
+      { name: 'Bash', input: { command: 'semgrep scan --config p/php' } },
+    ];
+    expect(sessionRanSemgrep(sessionUses)).toBe(true);
+  });
+  it('returns true when "composer sast" ran', () => {
+    expect(sessionRanSemgrep([{ name: 'Bash', input: { command: 'composer sast' } }])).toBe(true);
+    expect(sessionRanSemgrep([{ name: 'Bash', input: { command: 'composer sast -- --diff' } }])).toBe(true);
+  });
+  it('returns true when "npm run sast" ran', () => {
+    expect(sessionRanSemgrep([{ name: 'Bash', input: { command: 'npm run sast' } }])).toBe(true);
+  });
+  it('returns false when no semgrep-like command ran', () => {
+    expect(sessionRanSemgrep([
+      { name: 'Bash', input: { command: 'git status' } },
+      { name: 'Bash', input: { command: 'npm test' } },
+    ])).toBe(false);
+  });
+  it('returns false for empty list', () => {
+    expect(sessionRanSemgrep([])).toBe(false);
+  });
+  it('ignores tool_use that is not Bash', () => {
+    expect(sessionRanSemgrep([{ name: 'Skill', input: { skill: 'semgrep' } }])).toBe(false);
+  });
+});
+
+describe('decide() — enforce-semgrep-security', () => {
+  it('passes when command is NOT a git commit', () => {
+    expect(decide({
+      command: 'git status',
+      stagedFiles: ['app/Services/BillingService.php'],
+      semgrepRan: false,
+      assistantText: '',
+      override: null,
+    })).toEqual({ block: false });
+  });
+  it('passes when no security-relevant files in staged', () => {
+    expect(decide({
+      command: 'git commit -m "docs: update"',
+      stagedFiles: ['docs/foo.md', 'memory/bar.md'],
+      semgrepRan: false,
+      assistantText: '',
+      override: null,
+    })).toEqual({ block: false });
+  });
+  it('passes when Semgrep ran this session', () => {
+    expect(decide({
+      command: 'git commit -m "feat: billing"',
+      stagedFiles: ['app/Services/BillingService.php'],
+      semgrepRan: true,
+      assistantText: '',
+      override: null,
+    })).toEqual({ block: false });
+  });
+  it('passes with global override', () => {
+    expect(decide({
+      command: 'git commit -m "fix"',
+      stagedFiles: ['app/Services/BillingService.php'],
+      semgrepRan: false,
+      assistantText: '',
+      override: { phrase: 'срочно' },
+    })).toEqual({ block: false });
+  });
+  it('passes with inline semgrep-skip with non-empty reason', () => {
+    expect(decide({
+      command: 'git commit -m "fix"',
+      stagedFiles: ['app/Services/BillingService.php'],
+      semgrepRan: false,
+      assistantText: 'something\nsemgrep-skip: тривиальный docstring fix\nother',
+      override: null,
+    })).toEqual({ block: false });
+  });
+  it('does NOT pass with empty semgrep-skip reason', () => {
+    const r = decide({
+      command: 'git commit -m "fix"',
+      stagedFiles: ['app/Services/BillingService.php'],
+      semgrepRan: false,
+      assistantText: 'semgrep-skip: ',
+      override: null,
+    });
+    expect(r.block).toBe(true);
+  });
+  it('blocks when commit has security file + no Semgrep + no override', () => {
+    const r = decide({
+      command: 'git commit -m "feat: billing fix"',
+      stagedFiles: ['app/Services/BillingService.php', 'app/Models/Deal.php'],
+      semgrepRan: false,
+      assistantText: '',
+      override: null,
+    });
+    expect(r.block).toBe(true);
+    expect(r.message).toContain('Semgrep');
+    expect(r.message).toContain('BillingService');
+  });
+});
+
+describe('override vocab coverage', () => {
+  it("global override \"без скилов\" suppresses semgrep-security", () => {
+    const o = findOverride("без скилов", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+  it("global override \"direct ok\" suppresses semgrep-security", () => {
+    const o = findOverride("direct ok", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+  it("global override \"срочно\" suppresses semgrep-security", () => {
+    const o = findOverride("срочно", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+  it("global override \"быстрый коммит\" suppresses semgrep-security", () => {
+    const o = findOverride("быстрый коммит", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+  it("global override \"recovery\" suppresses semgrep-security", () => {
+    const o = findOverride("recovery", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+  it("global override \"memory dump\" suppresses semgrep-security", () => {
+    const o = findOverride("memory dump", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+  it("global override \"ремонт инфраструктуры\" suppresses semgrep-security", () => {
+    const o = findOverride("ремонт инфраструктуры\nремонт: test reason", 'semgrep-security');
+    expect(o).toBeTruthy();
+  });
+});