Initial workspace: scaffold + constitution + spec documents

Rust workspace with 5 crates (mesh-types, mesh-crypto, mesh-network,
mesh-validator, mesh-wallet), PROJECT_CONSTITUTION.md for CHORUS
automated ingestion, and the full MESH protocol specification suite.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/mesh-network/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "mesh-network"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+description = "QUIC transport layer, message framing, and peer protocol for MESH"
+
+[dependencies]
+mesh-types = { path = "../mesh-types" }