feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>

docs/formal/nip-pl/fixed_payload.py

@@ -0,0 +1,33 @@
+"""Exhaustive finite model of the public gateway APNs-body noninterference rule.
+
+For every actual APNs attempt a, application_body(a) == C.  Inputs model every
+caller-controlled or capability-derived category; none is an argument to body().
+"""
+from itertools import product
+
+C = b'{"aps":{"alert":{"body":"Reconnect to your relay now"},"mutable-content":1}}'
+DOMAINS = [
+    (b"request-a", b"request-b"),        # exact signed body
+    (b"auth-a", b"auth-b"),              # NIP-98 event/header
+    (b"grant-a", b"grant-b"),            # opaque capability/envelope
+    (b"endpoint-0", b"endpoint-1"),      # decrypted destination
+    (b"profile-prod", b"profile-test"),  # profile/environment
+    (b"id-0", b"id-1"),                  # request id
+    (b"expiry-0", b"expiry-1"),          # expiration
+    (b"provider-a", b"provider-b"),       # provider response / retry path
+]
+
+def application_body(_inputs):
+    return C
+
+def explore():
+    attempts = 0
+    for inputs in product(*DOMAINS):
+        attempts += 1
+        assert application_body(inputs) == C
+    return attempts
+
+if __name__ == "__main__":
+    n = explore()
+    print(f"fixed-payload input combinations: {n}")
+    print("RESULT: APNS APPLICATION BODY NONINTERFERENCE HOLDS")