diff --git a/docs/evidence/2026-09-14-ccr0019-delivery-check.json b/docs/evidence/2026-09-14-ccr0019-delivery-check.json
new file mode 100644
index 0000000..db44dde
--- /dev/null
+++ b/docs/evidence/2026-09-14-ccr0019-delivery-check.json
@@ -0,0 +1,26 @@
+{
+  "observed_at": "2026-09-13T23:44:04.757286+00:00",
+  "ccr_id": "CCR-2026-0019",
+  "status": "passed",
+  "approval_mutations": false,
+  "checks": {
+    "private_delivery_existing_version_1": true,
+    "approval:read": {
+      "native_claim_http_status": 404,
+      "profile_checked": true
+    },
+    "approval:consume": {
+      "native_claim_http_status": 403,
+      "profile_checked": true
+    }
+  },
+  "cleanup": true,
+  "warden_session": "exited_0_after_self_revocation_and_helper_cleanup",
+  "approval_engine_pod_uid": "7b8c05d9-f1d5-403d-abb3-2250bff9db5e",
+  "approval_engine_image": "sha256:251941a5cb2724b57cc32cff6b693b1ab0be695bee4f56f02d51961189c0fa49",
+  "limits": [
+    "Read request used a fresh nonexistent approval id; 404 proves authenticated routing, not a usable claim.",
+    "Consume-only token was denied the read route; no real approval was consumed.",
+    "Wrong-group human login remains untested."
+  ]
+}
diff --git a/docs/evidence/2026-09-14-ccr0019-reader-preflight.json b/docs/evidence/2026-09-14-ccr0019-reader-preflight.json
new file mode 100644
index 0000000..96e256b
--- /dev/null
+++ b/docs/evidence/2026-09-14-ccr0019-reader-preflight.json
@@ -0,0 +1,34 @@
+{
+  "observed_at": "2026-09-13T23:44:04.757314+00:00",
+  "ccr_id": "CCR-2026-0019",
+  "secret_values_read": false,
+  "status": "passed",
+  "checks": {
+    "platform/data/workloads/secrets-engine/approval-client": [
+      "read"
+    ],
+    "platform/metadata/workloads/secrets-engine/approval-client": [
+      "read"
+    ],
+    "platform/data/workloads/approval-engine/operator-client": [
+      "deny"
+    ],
+    "platform/metadata/workloads/secrets-engine": [
+      "deny"
+    ],
+    "platform/metadata/workloads": [
+      "deny"
+    ],
+    "platform/data/workloads/activity-core/llm-connect/llm-connect-provider-secrets": [
+      "deny"
+    ],
+    "sys/policies/acl/workload-kv-read-secrets-engine-approval-client": [
+      "deny"
+    ],
+    "auth/netkingdom/role/secrets-engine-approval-client-workload-kv-read": [
+      "deny"
+    ]
+  },
+  "identity_policy_scope_verified": true,
+  "warden_session": "exited_0_after_self_revocation_and_helper_cleanup"
+}
diff --git a/scripts/approval-client-delivery-check.py b/scripts/approval-client-delivery-check.py
new file mode 100644
index 0000000..fe53d3a
--- /dev/null
+++ b/scripts/approval-client-delivery-check.py
@@ -0,0 +1,106 @@
+"""Silent bounded CCR-2026-0019 acceptance; never creates or consumes approvals."""
+import json
+import os
+from pathlib import Path
+import signal
+import stat
+import tempfile
+from datetime import datetime, timezone
+from urllib.request import Request, build_opener, ProxyHandler, HTTPRedirectHandler
+from urllib.error import HTTPError
+from uuid import uuid4
+
+import importlib.util
+_spec = importlib.util.spec_from_file_location('reader_preflight', Path(__file__).with_name('approval-client-reader-preflight.py'))
+preflight = importlib.util.module_from_spec(_spec)
+_spec.loader.exec_module(preflight)
+
+RECEIPT = Path('/home/worsch/railiance-platform/docs/evidence/2026-09-14-ccr0019-delivery-check.json')
+class NoRedirect(HTTPRedirectHandler):
+    def redirect_request(self, *args, **kwargs):
+        return None
+
+def transport(request, *, timeout):
+    return build_opener(ProxyHandler({}), NoRedirect()).open(request, timeout=timeout)
+
+def private(path, mode, directory=False):
+    info = path.lstat()
+    if stat.S_IMODE(info.st_mode) != mode or info.st_uid != os.getuid():
+        raise ValueError('private_path_required')
+    if not (stat.S_ISDIR(info.st_mode) if directory else stat.S_ISREG(info.st_mode)):
+        raise ValueError('private_path_required')
+
+def main():
+    receipt = {'observed_at':datetime.now(timezone.utc).isoformat(), 'ccr_id':'CCR-2026-0019',
+               'status':'refused', 'approval_mutations':False, 'checks':{}, 'cleanup':False}
+    directory = None
+    secret_file = None
+    try:
+        preflight.main()
+        from secrets_engine.approval_auth import KeyCapeApprovalAuthConfig
+        from secrets_engine.service_auth import KeyCapeServiceAuthProvider
+        runtime = Path('/run/user') / str(os.getuid())
+        private(runtime, 0o700, True)
+        if runtime.resolve() != runtime:
+            raise ValueError('private_path_required')
+        result = preflight.subprocess.run(['findmnt','-n','-o','FSTYPE','-T',str(runtime)],capture_output=True,text=True,timeout=10)
+        if result.returncode or result.stdout.strip() != 'tmpfs':
+            raise ValueError('runtime_tmpfs_required')
+        directory = Path(tempfile.mkdtemp(prefix='secrets-approval-',dir=runtime))
+        private(directory, 0o700, True)
+        secret_file = directory/'client-secret'
+        helper = Path.home()/'.vault-token'
+        private(helper, 0o600)
+        token = helper.read_text().strip()
+        req = Request('https://bao.coulomb.social/v1/platform/data/workloads/secrets-engine/approval-client?version=1',headers={'X-Vault-Token':token})
+        with transport(req,timeout=20) as response:
+            data = response.read(65537)
+        if len(data)>65536:
+            raise ValueError('custody_response_invalid')
+        data=json.loads(data)
+        if data['data']['metadata']['version'] != 1:
+            raise ValueError('custody_response_invalid')
+        value=data['data']['data']['CLIENT_SECRET']
+        if not isinstance(value,str) or not value or len(value)>16384:
+            raise ValueError('custody_response_invalid')
+        fd=os.open(secret_file,os.O_WRONLY|os.O_CREAT|os.O_EXCL|os.O_NOFOLLOW,0o600)
+        with os.fdopen(fd,'w') as stream:
+            stream.write(value)
+        del value, data, token, req
+        private(secret_file,0o600)
+        receipt['checks']['private_delivery_existing_version_1']=True
+        approval_id=str(uuid4())
+        for scope in ('approval:read','approval:consume'):
+            config=KeyCapeApprovalAuthConfig(token_url='https://kc.coulomb.social/token',issuer='https://kc.coulomb.social',client_secret_file=secret_file,scope=scope)
+            jwt=KeyCapeServiceAuthProvider(config,transport=transport).exchange()
+            request=Request('http://127.0.0.1:18281/v1/approvals/'+approval_id+'/claim',headers={'Authorization':'Bearer '+jwt.token})
+            try:
+                with transport(request,timeout=20) as response:
+                    status=response.status
+            except HTTPError as error:
+                status=error.code
+                error.close()
+            expected=404 if scope=='approval:read' else 403
+            if status != expected:
+                raise ValueError('native_scope_check_failed')
+            receipt['checks'][scope]={'native_claim_http_status':status,'profile_checked':True}
+            del jwt, request
+        receipt['status']='passed'
+    except Exception:
+        receipt['failure']='delivery_check_failed'
+        raise
+    finally:
+        if secret_file is not None and secret_file.exists():
+            secret_file.unlink()
+        if directory is not None:
+            directory.rmdir()
+        receipt['cleanup']=directory is None or not directory.exists()
+        RECEIPT.write_text(json.dumps(receipt,indent=2)+'\n')
+
+if __name__=='__main__':
+    for sig in (signal.SIGINT,signal.SIGTERM):
+        signal.signal(sig,lambda *_: (_ for _ in ()).throw(SystemExit(130)))
+    try:
+        main()
+    except Exception:
+        raise SystemExit(1) from None
diff --git a/scripts/approval-client-reader-preflight.py b/scripts/approval-client-reader-preflight.py
new file mode 100644
index 0000000..7821841
--- /dev/null
+++ b/scripts/approval-client-reader-preflight.py
@@ -0,0 +1,62 @@
+"""Silent exact-reader metadata preflight under the Warden login envelope."""
+import json
+import os
+from pathlib import Path
+import subprocess
+from datetime import datetime, timezone
+
+POLICY = 'workload-kv-read-secrets-engine-approval-client'
+DATA = 'platform/data/workloads/secrets-engine/approval-client'
+META = 'platform/metadata/workloads/secrets-engine/approval-client'
+EXPECTED = {
+    DATA: ['read'], META: ['read'],
+    'platform/data/workloads/approval-engine/operator-client': ['deny'],
+    'platform/metadata/workloads/secrets-engine': ['deny'],
+    'platform/metadata/workloads': ['deny'],
+    'platform/data/workloads/activity-core/llm-connect/llm-connect-provider-secrets': ['deny'],
+    'sys/policies/acl/' + POLICY: ['deny'],
+    'auth/netkingdom/role/secrets-engine-approval-client-workload-kv-read': ['deny'],
+}
+RECEIPT = Path('/home/worsch/railiance-platform/docs/evidence/2026-09-14-ccr0019-reader-preflight.json')
+
+def validate_identity(identity):
+    policies = set(identity.get('policies', [])) | set(identity.get('identity_policies', []))
+    if POLICY not in policies or policies - {POLICY, 'default'}:
+        raise ValueError('unexpected_effective_policies')
+    if not identity.get('entity_id') or not 0 < identity.get('ttl', 0) <= 900:
+        raise ValueError('unbounded_or_unidentified_reader')
+
+def bao(*args):
+    result = subprocess.run(['bao', *args], capture_output=True, text=True, timeout=30)
+    if result.returncode:
+        raise ValueError('metadata_request_failed')
+    return json.loads(result.stdout)
+
+def main():
+    receipt = {'observed_at': datetime.now(timezone.utc).isoformat(),
+               'ccr_id': 'CCR-2026-0019', 'secret_values_read': False,
+               'status': 'refused', 'checks': {}}
+    try:
+        if Path.home().parent.name != '.warden-attended-login' or os.getenv('BAO_TOKEN') or os.getenv('VAULT_TOKEN'):
+            raise ValueError('attended_envelope_required')
+        identity = bao('token', 'lookup', '-format=json')['data']
+        validate_identity(identity)
+        receipt['identity_policy_scope_verified'] = True
+        for path, expected in EXPECTED.items():
+            values = bao('token', 'capabilities', '-format=json', path)
+            if sorted(values) != expected:
+                raise ValueError('capabilities_mismatch')
+            receipt['checks'][path] = expected
+        receipt['status'] = 'passed'
+    except Exception as exc:
+        code = str(exc)
+        receipt['failure'] = code if code in {'attended_envelope_required', 'unexpected_effective_policies', 'unbounded_or_unidentified_reader', 'metadata_request_failed', 'capabilities_mismatch'} else 'preflight_failed'
+        raise
+    finally:
+        RECEIPT.write_text(json.dumps(receipt, indent=2) + '\n')
+
+if __name__ == '__main__':
+    try:
+        main()
+    except Exception:
+        raise SystemExit(1) from None
diff --git a/tests/test_approval_client_reader.py b/tests/test_approval_client_reader.py
new file mode 100644
index 0000000..932a990
--- /dev/null
+++ b/tests/test_approval_client_reader.py
@@ -0,0 +1,47 @@
+import importlib.util
+import json
+import tempfile
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+
+ROOT=Path(__file__).resolve().parents[1]
+def load(name, filename):
+    spec=importlib.util.spec_from_file_location(name, ROOT/'scripts'/filename)
+    module=importlib.util.module_from_spec(spec); spec.loader.exec_module(module)
+    return module
+reader=load('reader','approval-client-reader-preflight.py')
+delivery=load('delivery','approval-client-delivery-check.py')
+
+class ReaderBoundary(unittest.TestCase):
+    def test_additive_identity_admin_policy_is_refused(self):
+        base={'policies':[reader.POLICY,'default'],'entity_id':'fixture','ttl':899}
+        reader.validate_identity(base)
+        for change in ({'identity_policies':['platform-admin']},{'policies':['default']},{'ttl':901},{'entity_id':''}):
+            with self.subTest(change=change), self.assertRaises(ValueError):
+                reader.validate_identity(base|change)
+
+    def test_refused_preflight_never_fetches_credentials(self):
+        with tempfile.TemporaryDirectory() as directory:
+            receipt=Path(directory)/'receipt.json'
+            with patch.object(delivery,'RECEIPT',receipt), patch.object(delivery.preflight,'main',side_effect=ValueError('fixture refusal')), patch.object(delivery,'transport') as transport:
+                with self.assertRaises(ValueError): delivery.main()
+                transport.assert_not_called()
+            recorded=json.loads(receipt.read_text())
+            self.assertEqual(recorded['status'],'refused')
+            self.assertTrue(recorded['cleanup'])
+            self.assertNotIn('fixture refusal',receipt.read_text())
+
+    def test_private_file_refuses_symlink_and_group_read(self):
+        with tempfile.TemporaryDirectory() as directory:
+            path=Path(directory)/'secret'; path.write_text('synthetic'); path.chmod(0o600)
+            delivery.private(path,0o600)
+            link=Path(directory)/'link'; link.symlink_to(path)
+            with self.assertRaises(ValueError): delivery.private(link,0o600)
+            path.chmod(0o640)
+            with self.assertRaises(ValueError): delivery.private(path,0o600)
+
+    def test_credential_redirect_is_refused(self):
+        self.assertIsNone(delivery.NoRedirect().redirect_request(None,None,302,'redirect',{},'https://unrelated.invalid'))
+
+if __name__=='__main__': unittest.main()
diff --git a/workplans/RPF-WP-0035-credential-lane-implementation.md b/workplans/RPF-WP-0035-credential-lane-implementation.md
index c16d325..745e305 100644
--- a/workplans/RPF-WP-0035-credential-lane-implementation.md
+++ b/workplans/RPF-WP-0035-credential-lane-implementation.md
@@ -607,3 +607,29 @@ Service/domain-transaction/human and factory runtime/spend admission remain
 separate; factory attempts and paid model calls remain zero.
 
 Receipt: [native readback](../docs/evidence/2026-09-11-factory-native-readback.json).
+
+
+### T06 native reader acceptance — 2026-09-14
+
+The scoped Warden login lane `secrets-engine-approval-client-login` now routes
+to the applied OIDC reader and the platform's silent preflight. The installed
+Warden package still carries an older catalog; use the explicit source catalog
+`WARDEN_ROUTING_CATALOG=/home/worsch/ops-warden/registry/routing/catalog.yaml`
+until its next normal installation refresh. This lane authenticates the reader;
+it is not a raw secret fetch or retained-file delivery interface.
+
+Live effective-policy and capability checks passed: only exact data/metadata
+read, no sibling secret, parent listing, write or control-plane authority.
+A second contained session read existing version 1 into an operator-owned 0600
+file in a private 0700 runtime tmpfs directory. The native consumer exchanged
+separate read and consume scopes; Approval Engine verified the read token before
+returning 404 for a fresh nonexistent approval, and refused the consume-only
+token's read request with 403. No approval was created, bound or consumed.
+Both Warden sessions exited 0 after self-revocation/helper cleanup; temporary
+credential file and directory were removed. Four refusal/path/redirect tests
+pass. Receipts are in platform `docs/evidence/2026-09-14-ccr0019-{reader-preflight,delivery-check}.json`.
+
+Remaining: an actual nonmember login refusal, real approval claim/consume,
+separate narrow requester admission and deployed Informed Decision review with
+an explicitly admitted human mandate. The reader group alone grants no review
+mandate. T03 and CCR delivery activation remain open; no OpenRouter key was read.