From f4aad57cce21cbbd206b88769f58d447b2235ec8 Mon Sep 17 00:00:00 2001
From: autocommit <autocommit@ftw.codes>
Date: Thu, 4 Jun 2026 09:26:32 -0700
Subject: [PATCH] =?UTF-8?q?feat(mc-mod-host):=20=E2=9C=A8=20Implement=20Wa?=
 =?UTF-8?q?smController=20and=20NativeLoader=20for=20WASM=20module=20manag?=
 =?UTF-8?q?ement=20with=20test=20coverage=20for=20execution=20limits=20and?=
 =?UTF-8?q?=20no-op=20behavior?=
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Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>
---
 src/simulator/crates/mc-mod-host/src/native_loader.rs         | 3 ++-
 src/simulator/crates/mc-mod-host/src/wasm_controller.rs       | 3 ++-
 .../crates/mc-mod-host/tests/wasm_controller_limits.rs        | 4 ++--
 .../crates/mc-mod-host/tests/wasm_controller_noop.rs          | 2 +-
 4 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/simulator/crates/mc-mod-host/src/native_loader.rs b/src/simulator/crates/mc-mod-host/src/native_loader.rs
index 997caa5b..cc51c903 100644
--- a/src/simulator/crates/mc-mod-host/src/native_loader.rs
+++ b/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,
diff --git a/src/simulator/crates/mc-mod-host/src/wasm_controller.rs b/src/simulator/crates/mc-mod-host/src/wasm_controller.rs
index 78124ff4..3cc50847 100644
--- a/src/simulator/crates/mc-mod-host/src/wasm_controller.rs
+++ b/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"] }`
diff --git a/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs b/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs
index 79c5f100..b688a6cf 100644
--- a/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs
+++ b/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:?}"
diff --git a/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs b/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs
index 42cf12f9..ef313494 100644
--- a/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs
+++ b/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:?}"