SSR migrated to Rust

ROADMAP.md

@@ -39,6 +39,16 @@
 
 ---
 
+## Core Consolidation — Rust Binary
+
+Move all core functionality unrelated to language introspection into the Rust binary. Other languages invoke it through FFI (PyO3 and equivalents) rather than carrying their own copy — centralizing behavior for the whole Mizan toolchain.
+
+Language-specific core code then exists only for actual framework mechanics — registering client functions, binding Shapes to an ORM — never for behavior the binary already owns.
+
+**SSR in the binary.** Because SSR works directly from the IR's typed schemas, the binary can drive it rather than forcing each backend adapter to author SSR by hand. That also lets the binary own SSR validation, keeping it consistent across adapters instead of each backend deriving it manually and drifting apart.
+
+---
+
 ## Mizan Cloud (closed-source)
 
 ### Mizan Edge