feat: DGR-002 - Adopt the versioned gRPC Shard protocol

packages/node/meshnet_node/native_protocol/__init__.py

@@ -0,0 +1,63 @@
+"""The native Shard protocol: Protobuf over gRPC/HTTP2 (ADR-0020).
+
+`packages/node/native/proto/shard_runtime.proto` is the contract. This package
+is how Python speaks it: the generated stubs plus the validation, framing and
+chunking rules that the stubs cannot express.
+
+Import the message types from here rather than reaching into `.generated`, so
+the location of build output stays an implementation detail::
+
+    from meshnet_node.native_protocol import pb, encode_tensor, decode_bundle
+"""
+
+from __future__ import annotations
+
+from .generated import shard_runtime_pb2 as pb
+from .codec import (
+    BUNDLE_VERSION,
+    DEFAULT_MAX_CHUNK_BYTES,
+    DEFAULT_MAX_FRAGMENT_BYTES,
+    DEFAULT_MAX_INFLIGHT_CHUNKS,
+    DEFAULT_MAX_PREFILL_CHUNK_TOKENS,
+    HIDDEN_STATES,
+    SCHEMA_VERSION,
+    PayloadCorrupt,
+    PrefillChunk,
+    ProtocolError,
+    checksum_of,
+    crc32c,
+    decode_bundle,
+    decode_tensor,
+    default_flow_control,
+    encode_bundle,
+    encode_tensor,
+    expected_bytes,
+    itemsize,
+    negotiate_flow_control,
+    plan_prefill_chunks,
+)
+
+__all__ = [
+    "BUNDLE_VERSION",
+    "DEFAULT_MAX_CHUNK_BYTES",
+    "DEFAULT_MAX_FRAGMENT_BYTES",
+    "DEFAULT_MAX_INFLIGHT_CHUNKS",
+    "DEFAULT_MAX_PREFILL_CHUNK_TOKENS",
+    "HIDDEN_STATES",
+    "SCHEMA_VERSION",
+    "PayloadCorrupt",
+    "PrefillChunk",
+    "ProtocolError",
+    "checksum_of",
+    "crc32c",
+    "decode_bundle",
+    "decode_tensor",
+    "default_flow_control",
+    "encode_bundle",
+    "encode_tensor",
+    "expected_bytes",
+    "itemsize",
+    "negotiate_flow_control",
+    "pb",
+    "plan_prefill_chunks",
+]