feat(mc-mod-host): ✨ Implement WasmController and NativeLoader for WASM module management with test coverage for execution limits and no-op behavior

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

src/simulator/crates/mc-mod-host/src/native_loader.rs

@@ -27,7 +27,7 @@ use std::sync::Mutex;
 
 use libloading::{Library, Symbol};
 use mc_ai::evaluator::ScoringWeights;
-use mc_ai::tactical::{Action, TacticalState};
+use mc_ai::tactical::{Action, TacticalMemory, TacticalState};
 use mc_player_api::controllers::{AiController, AiControllerIdent, SandboxKind};
 
 use crate::abi::{self, STATE_VERSION_PREFIX};
@@ -93,6 +93,7 @@ impl AiController for NativeAiController {
         slot: u8,
         _weights: &ScoringWeights,
         seed: u64,
+        _memory: &mut TacticalMemory,
     ) -> Vec<Action> {
         let payload = match postcard::to_allocvec(state) {
             Ok(p) => p,

src/simulator/crates/mc-mod-host/src/wasm_controller.rs

@@ -8,7 +8,7 @@
 use std::sync::{Arc, Mutex};
 
 use mc_ai::evaluator::ScoringWeights;
-use mc_ai::tactical::{Action, TacticalState};
+use mc_ai::tactical::{Action, TacticalMemory, TacticalState};
 use mc_player_api::controllers::{AiController, AiControllerIdent, SandboxKind};
 use wasmtime::{Memory, TypedFunc, Val};
 
@@ -273,6 +273,7 @@ impl AiController for WasmAiController {
         slot: u8,
         _weights: &ScoringWeights,
         seed: u64,
+        _memory: &mut TacticalMemory,
     ) -> Vec<Action> {
         // Serialise state. postcard::to_allocvec is allocator-only;
         // pulling it through our `postcard = { features = ["alloc"] }`

src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs

@@ -44,7 +44,7 @@ fn memory_limiter_blocks_grow_past_16_mib() {
     let weights = ScoringWeights::default();
     // Guest requests +300 pages on top of the initial 1; limiter rejects,
     // memory.grow returns -1, guest traps. Host MUST surface empty plan.
-    let actions = controller.decide_turn(&state, 0, &weights, 0);
+    let actions = controller.decide_turn(&state, 0, &weights, 0, &mut mc_ai::tactical::TacticalMemory::default());
     assert!(
         actions.is_empty(),
         "memory.grow past 16 MiB cap must yield empty actions, got {actions:?}"
@@ -62,7 +62,7 @@ fn allocator_mode_retries_once_on_buffer_too_small() {
     // Call #1 returns -2; host retries → call #2 writes one zero byte
     // (postcard's `Vec::<Action>::new()`) and returns 1. Decoded result:
     // an empty action chain.
-    let actions = controller.decide_turn(&state, 0, &weights, 0);
+    let actions = controller.decide_turn(&state, 0, &weights, 0, &mut mc_ai::tactical::TacticalMemory::default());
     assert!(
         actions.is_empty(),
         "expected empty postcard Vec after retry, got {actions:?}"

src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs

@@ -35,7 +35,7 @@ fn wasm_controller_noop_returns_empty_actions() {
 
     let state = empty_state();
     let weights = ScoringWeights::default();
-    let actions = controller.decide_turn(&state, 0, &weights, 42);
+    let actions = controller.decide_turn(&state, 0, &weights, 42, &mut mc_ai::tactical::TacticalMemory::default());
     assert!(
         actions.is_empty(),
         "noop must return empty action chain, got {actions:?}"