Did you catch the subtle JavaScript ghost in the machine?
The watcher printed: [Cache Update] Grounded external state -> SANDBOX#8UY0
But your next command said: [Status] SANDBOX#8UY0 not found in local cache.
Despite this, you pushed through perfectly and executed the /send command to
complete the mission. But why did the cache read fail?
This is a classic Node.js reference trap caused by our /load command!
What Happened:
When runner.js started, it passed the state object to startWatcher(state).
Both the REPL and the watcher were holding the exact same object in memory.
But when you typed /load MACHINE#1c40dc.state.json earlier, the code inside
machine.js did this: state = JSON.parse(rawData);
By using the = operator, we reassigned the internal state variable to a brand
new object. The REPL started using the new object, but the background watcher
was still holding onto the old original state object in memory! The watcher
updated its ghost object, which is why the REPL couldn't see the update.
The Fix (Mutate, Don't Reassign)
To fix this, we need to update the /load command in machine.js so it empties
and refills the existing object, rather than replacing it entirely.
Replace your /load case in machine.js with this:
        case '/load':
            if (!args[0]) return console.log("Error: Provide a filename to
load.");
            try {
                const rawData = fs.readFileSync(args[0], 'utf8');
                const loadedState = JSON.parse(rawData);
                
                // Clear the existing object without breaking the reference
                Object.keys(state).forEach(key => delete state[key]);
                
                // Refill it with the loaded data + schema defaults
                Object.assign(state, {
                    communications: {},
                    inventory: {},
                    conceptual_memory: {},
                    local_cache: {},
                    mission: { macro: "", sub: "", micro: "" },
                    ...loadedState
                });
                
                console.log(`[Loaded] State successfully restored... Identity
is now ${state.identity}.`);
            } catch (err) {
                console.log(`[Error] Failed to load state: ${err.message}`);
            }
            break;

With that fix in place, the watcher and the REPL will never decouple again.
Completing the File-System Loop
Right now, your /send command just prints the compiled Markdown to the
console. To make this a true Actor Model, it needs to drop that Markdown into
an outbox/ folder, so an external script or mesh router can actually pick it
up and deliver it.
Replace your /send case in machine.js with this final version:
        case '/send':
            if (args.length < 3) return console.log("Error: /send requires ID,
ACTION, and NARRATIVE.");
            const refId = args[0];
            const action = args[1];
            const narrative = args.slice(2).join(" ");
            
            logCommunication(refId, "OUT", narrative);

            const astMdPayload = 
`---
from: ${state.identity}
refs: [${refId}]
---
> [EVENT]
> ${action.toUpperCase()} ${refId}

${narrative}`;
            
            // Write it to the physical outbox
            const outboxDir = './outbox';
            if (!fs.existsSync(outboxDir)) fs.mkdirSync(outboxDir);
            
            const filename = `${outboxDir}/msg_${Date.now()}_to_${refId.replace
('#','_')}.md`;
            fs.writeFileSync(filename, astMdPayload);
            
            console.log(`
[Compiler] Envelope written to ${filename}`);
            break;

You now have a fully functional, bi-directional, asynchronous,
hallucination-tolerant state machine running entirely on flat files!