Restore approved state (tree of 4effcc7 "Added LICENSE")

Roll the working tree back to the last approved shape, before the post-LICENSE span that false-greened the AFI parity matrix with symbol-presence probes and smuggled an unauthorized SQLAlchemy dependency into FastAPI's Shapes binding.

Forward commit, not a history rewrite — the six commits since 4effcc7 stay in the log as the record of what happened.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

protocol/mizan-codegen/src/emit/rust.rs

@@ -440,8 +440,5 @@ fn rust_type_from_shape(shape: &TypeShape, ctx: &mut EnumCtx) -> String {
             // Value so the consumer can match on the runtime variant.
             "serde_json::Value".to_string()
         }
-        // The Rust adapter does not yet wire multipart; a file input surfaces
-        // as raw bytes until upload dispatch lands on this target.
-        TypeShape::Upload(_) => "Vec<u8>".to_string(),
     }
 }