diff --git a/src/core/config.ts b/src/core/config.ts
index 57771a3b7..5dd4619c9 100644
--- a/src/core/config.ts
+++ b/src/core/config.ts
@@ -927,6 +927,10 @@ export const KNOWN_CONFIG_KEYS: readonly string[] = [
   // operator had to discover --force by reading source. Same class as the
   // spend-controls registration above.
   'auto_chronicle',
+  // Takes bootstrap (v0.41.18.0, A12). The onboard remediation's two-gate
+  // consent reads this key, and enabling it is the documented path to
+  // `gbrain takes extract --from-pages` — same unregistered-key class.
+  'takes.bootstrap_enabled',
   'sync.cost_gate_min_usd',
   'sync.federated_v2',
   'embed.backfill_cooldown_min',
diff --git a/test/config.test.ts b/test/config.test.ts
index 57ae8e79e..cdfcbf116 100644
--- a/test/config.test.ts
+++ b/test/config.test.ts
@@ -259,6 +259,8 @@ describe('KNOWN_CONFIG_KEYS — documented enable commands must be registered',
     const { KNOWN_CONFIG_KEYS, KNOWN_CONFIG_KEY_PREFIXES } = await import('../src/core/config.ts');
     // The flag the chronicle backstop reads (isAutoChronicleEnabled).
     expect(KNOWN_CONFIG_KEYS).toContain('auto_chronicle');
+    // The takes bootstrap two-gate consent flag (v0.41.18.0 A12).
+    expect(KNOWN_CONFIG_KEYS).toContain('takes.bootstrap_enabled');
     // chronicle.tz (chronicleTz) + future chronicle.* knobs.
     expect(KNOWN_CONFIG_KEY_PREFIXES.some(p => 'chronicle.tz'.startsWith(p))).toBe(true);
   });