Restore OCaml to 5c8b05a + Docker native server entrypoint

All OCaml files restored to the last known working state (5c8b05a).
All SX changes preserved and verified working with native server.
Docker compose updated to run sx_server.exe --http directly.

859KB homepage renders, 7/9 pages cached, ~30s startup (JIT fallback).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

hosts/ocaml/bin/run_tests.ml

@@ -390,22 +390,6 @@ let make_test_env () =
   bind "defeffect" (fun _args -> Nil);
 
   (* --- Primitives for canonical.sx / content tests --- *)
-  bind "symbol-name" (fun args ->
-    match args with
-    | [Symbol s] -> String s
-    | _ -> raise (Eval_error "symbol-name: expected symbol"));
-  bind "keyword-name" (fun args ->
-    match args with
-    | [Keyword k] -> String k
-    | _ -> raise (Eval_error "keyword-name: expected keyword"));
-  bind "trim-right" (fun args ->
-    match args with
-    | [String s] ->
-      let len = String.length s in
-      let i = ref (len - 1) in
-      while !i >= 0 && (s.[!i] = ' ' || s.[!i] = '\t' || s.[!i] = '\n' || s.[!i] = '\r') do decr i done;
-      String (String.sub s 0 (!i + 1))
-    | _ -> raise (Eval_error "trim-right: expected string"));
   bind "contains-char?" (fun args ->
     match args with
     | [String s; String c] when String.length c = 1 ->
@@ -825,8 +809,6 @@ let run_spec_tests env test_files =
        with e -> Printf.eprintf "Warning: %s: %s\n%!" name (Printexc.to_string e))
     end
   in
-  (* Content-addressing, serialization *)
-  load_module "canonical.sx" spec_dir;
   (* Render adapter for test-render-html.sx *)
   load_module "render.sx" spec_dir;
   load_module "adapter-html.sx" web_dir;