diff --git a/plugins/llm-security/CLAUDE.md b/plugins/llm-security/CLAUDE.md
index e94a8e2..368d225 100644
--- a/plugins/llm-security/CLAUDE.md
+++ b/plugins/llm-security/CLAUDE.md
@@ -105,7 +105,7 @@ deprecation signal because there is nothing to deprecate yet.
 | `deep-scan-synthesizer-agent` | Scanner JSON → human-readable report (9 scanners) | opus |
 | `cleaner-agent` | Semi-auto remediation proposals | opus |
 
-## Hooks (8)
+## Hooks (9)
 
 | Script | Event | Matcher | Purpose |
 |--------|-------|---------|---------|
@@ -117,6 +117,7 @@ deprecation signal because there is nothing to deprecate yet.
 | `post-mcp-verify.mjs` | PostToolUse | — (all) | Injection scan on ALL tool output (incl. MEDIUM patterns, HITL traps, sub-agent spawn, NL indirection, cognitive load, hybrid P2SQL/recursive/XSS). HTML content trap detection. Bash-specific: secrets/URLs/size. MCP: per-update description drift (MCP05) AND cumulative drift vs sticky baseline (E14, v7.3.0) — slow-burn rug-pulls that stay under the per-update threshold but diverge >=25% from baseline emit MEDIUM `mcp-cumulative-drift` advisory. Per-tool volume tracking |
 | `post-session-guard.mjs` | PostToolUse | — (all) | Runtime trifecta detection (Rule of Two). Sliding window (20 calls) + 100-call long-horizon. MCP-concentrated trifecta (same server = elevated severity). Sensitive path + exfil detection. Slow-burn trifecta (legs >50 calls apart = MEDIUM). Behavioral drift detection (Jensen-Shannon divergence). CaMeL-inspired data flow tagging (SHA-256 provenance tracking, output→input linking). Mode: `LLM_SECURITY_TRIFECTA_MODE=block\|warn\|off` (default: warn). Cumulative data volume tracking (100KB/500KB/1MB thresholds). Sub-agent delegation tracking (Task/Agent tools): escalation-after-input advisory when delegation occurs within `LLM_SECURITY_ESCALATION_WINDOW` calls (default 5) of untrusted input (DeepMind Agent Traps kat. 4); secondary 20-call MEDIUM advisory catches slow-burn variants outside the primary window (E17, v7.2.0) |
 | `update-check.mjs` | UserPromptSubmit | — | Checks for newer versions (max 1x/24h, cached). Disable: `LLM_SECURITY_UPDATE_CHECK=off` |
+| `pre-compact-scan.mjs` | PreCompact | — | Scan transcript for injection patterns + credentials before context compaction; prevents poisoned content from surviving in compact form. Reads at most last 512 KB for <500ms latency. Mode: `LLM_SECURITY_PRECOMPACT_MODE=block\|warn\|off` (default: warn). Cap: `LLM_SECURITY_PRECOMPACT_MAX_BYTES` |
 
 > `pre-install-supply-chain.mjs` covers 7 package managers: npm/yarn/pnpm, pip/pip3/uv, brew, docker, go, cargo, gem. Per-ecosystem blocklists, age gate (<72h), npm audit (critical=block, high=warn), PyPI API inspection, Levenshtein typosquat detection, Docker image verification.
 
diff --git a/plugins/llm-security/tests/lib/doc-consistency.test.mjs b/plugins/llm-security/tests/lib/doc-consistency.test.mjs
index ac2d2f6..0f1864f 100644
--- a/plugins/llm-security/tests/lib/doc-consistency.test.mjs
+++ b/plugins/llm-security/tests/lib/doc-consistency.test.mjs
@@ -84,3 +84,78 @@ describe('doc-consistency — v2 cutoffs are documented in unified prose', () =>
     assert.match(content, /score\s*[≥>=]+\s*65/);
   });
 });
+
+// ---------------------------------------------------------------------------
+// D4 (Batch C, Wave D): Hooks count must stay synchronized across three
+// surfaces — the CLAUDE.md `## Hooks (N)` header, the markdown table directly
+// underneath that header, and the canonical hooks/hooks.json definition.
+// Drift previously masked a missing `pre-compact-scan.mjs` row in CLAUDE.md.
+// This block fails fast if any of the three surfaces drift.
+// ---------------------------------------------------------------------------
+
+describe('doc-consistency — Hooks count consistency (D4)', () => {
+  const CLAUDE_MD = join(PLUGIN_ROOT, 'CLAUDE.md');
+  const HOOKS_JSON = join(PLUGIN_ROOT, 'hooks', 'hooks.json');
+
+  function readHeaderNumber(text) {
+    const match = text.match(/^##\s+Hooks\s*\((\d+)\)\s*$/m);
+    if (!match) throw new Error('No `## Hooks (N)` header found in CLAUDE.md');
+    return parseInt(match[1], 10);
+  }
+
+  function readTableRowCount(text) {
+    // Section spans from `## Hooks (N)` to next `^## ` heading.
+    const startIdx = text.search(/^##\s+Hooks\s*\(\d+\)\s*$/m);
+    if (startIdx < 0) throw new Error('Hooks header not found');
+    const tail = text.slice(startIdx);
+    const nextHeader = tail.search(/\n##\s+\S/);
+    const section = nextHeader > 0 ? tail.slice(0, nextHeader) : tail;
+    // Count rows that look like `| \`<name>.mjs\` | ...`.
+    // Excludes the header row (which uses bare `Script` not a backtick).
+    const rows = section.match(/^\|\s*`[^`|]+\.mjs`\s*\|/gm) || [];
+    return rows.length;
+  }
+
+  function readJsonHookCount(jsonText) {
+    const parsed = JSON.parse(jsonText);
+    const seen = new Set();
+    for (const eventArr of Object.values(parsed.hooks || {})) {
+      for (const entry of eventArr) {
+        for (const h of entry.hooks || []) {
+          // Dedupe by command path — a hook registered to multiple events
+          // counts as one script.
+          if (h.command) seen.add(h.command);
+        }
+      }
+    }
+    return seen.size;
+  }
+
+  it('header count, table row count, and hooks.json count agree', () => {
+    const claudeText = readFileSync(CLAUDE_MD, 'utf-8');
+    const hooksJsonText = readFileSync(HOOKS_JSON, 'utf-8');
+
+    const headerNumber = readHeaderNumber(claudeText);
+    const tableRowCount = readTableRowCount(claudeText);
+    const jsonHookCount = readJsonHookCount(hooksJsonText);
+
+    assert.equal(
+      headerNumber,
+      jsonHookCount,
+      `CLAUDE.md '## Hooks (${headerNumber})' header disagrees with hooks/hooks.json (${jsonHookCount} hooks). ` +
+        `Update the header to match.`,
+    );
+    assert.equal(
+      tableRowCount,
+      jsonHookCount,
+      `CLAUDE.md hooks table has ${tableRowCount} rows but hooks/hooks.json defines ${jsonHookCount} hooks. ` +
+        `Add/remove rows in the table to match.`,
+    );
+    assert.equal(
+      headerNumber,
+      tableRowCount,
+      `CLAUDE.md header (${headerNumber}) and table row count (${tableRowCount}) disagree. ` +
+        `These two surfaces must stay in sync.`,
+    );
+  });
+});