Release 0.0.48: manifest schema ownership

provides= strong providers, --strict schema gate, profile passthrough,
platforms validation, fast-path override bypass fix, e2e 66-68, mcpp.toml
docs 2.8-2.11 + schema-ownership appendix.

Author: d2learn-org

mcpp.toml

@@ -1,6 +1,6 @@
 [package]
 name        = "mcpp"
-version     = "0.0.47"
+version     = "0.0.48"
 description = "Modern C++ build & package management tool"
 license     = "Apache-2.0"
 authors     = ["mcpp-community"]

src/toolchain/fingerprint.cppm

@@ -18,7 +18,7 @@ import mcpp.toolchain.detect;
 
 export namespace mcpp::toolchain {
 
-inline constexpr std::string_view MCPP_VERSION = "0.0.47";
+inline constexpr std::string_view MCPP_VERSION = "0.0.48";
 
 struct FingerprintInputs {
     Toolchain                       toolchain;