Consolidate unit testing code

Docs/Module-Dependencies-in-Luprex.md

@@ -4,11 +4,8 @@ Modules are listed in dependency order — each module's dependencies
 all appear earlier in the list. Where a dependency comes only from
 the `.cpp` file (not the `.hpp`), it is marked **(cpp-only)**.
 
-- **bytell-hash-map** — third-party hash map (header-only)
 - **eng-malloc** — custom deterministic memory allocator
 - **enginewrapper** — pure C interface for driver/driven boundary
-- **fast-float** — third-party float parser (header-only)
-- **flat-hash-map** — third-party hash map (header-only)
 - **spookyv2** — hash function
 - **util** → spookyv2
 - **luastack** → util