This is a beautiful architectural requirement. You are describing two of the
most legendary, battle-tested features of classic LPC MUD drivers (like MudOS,
DGD, and your GDLPC):

1. **Dynamic Dispatch (`virtual_function`):** Catching calls to non-existent
methods on the fly to prevent fatal runtime crashes.
2. **State/Logic Separation (Hot-Reloading):** Recompiling the bytecode of a
program while keeping all the memory and variables of the running clones 100%
intact, with zero memory leaks.

In your C/C++ GDLPC driver, implementing this required deep, complex
memory-stack manipulation. But because we are targeting modern JavaScript (and
`mquickjs` inside HAUKI OS), we have native, highly optimized built-in
features designed *exactly* for this: **Proxies** and **Prototypal
Inheritance**.

### 1. How we achieve `virtual_function` (The Invisible Shield)

We use the **JavaScript `Proxy` API**. A Proxy acts as an invisible wrapper
around an object. If the AI Planner hallucinates a function call like
`worker->search_web("query")`, the VM normally throws a fatal `TypeError` and
crashes. Our Proxy intercepts that failure, checks if `search_web` exists, and
if not, dynamically returns a fallback function that routes the call to your
`virtual_function(name, ...args)`.

### 2. How we achieve Hot-Reloading (Zero Memory Leaks)

In LPC, a *Blueprint* holds the functions, and a *Clone* holds the variables.
In JS, we replicate this using `Object.create(blueprint)`.
When you update a program, we simply mutate the function pointers on the
Blueprint. Because all active clones inherit from that blueprint, **every
running instance instantly gets the updated code** without losing a single
byte of their internal state variables!

Here is the upgraded engine that implements both features gracefully:

### **`gdlpc_repl_v2.js` (Crash-Proof Edition)**

```javascript
 * =========================================================================
 * HAUKI-GEM-LAB // GDLPC -> JS Engine (V2)
 * Features: virtual_function (Crash Proofing) & Zero-Leak Hot Reloading
 * Target: Node.js / mquickjs
 * =========================================================================
 */
const readline = require('readline');

class LPCEngine {
    constructor() {
        this.blueprints = new Map();   // Holds the Logic (Functions)
        this.memory_vault = new Map(); // Holds the State (Cloned Instances)
        this.object_counter = 0;
    }

    // ---------------------------------------------------------------------
    // 1. HOT RELOADING ENGINE (Zero Memory Leaks)
    // ---------------------------------------------------------------------
    load_program(program_name, logic_object) {
        if (!this.blueprints.has(program_name)) {
            this.blueprints.set(program_name, {});
        }
        const blueprint = this.blueprints.get(program_name);
        
        // Wipe old logic and apply new logic. 
        // All existing clones instantly inherit these changes!
        for (let key in blueprint) delete blueprint[key];
        Object.assign(blueprint, logic_object);
        
        console.log(`
[SYSTEM] Blueprint '${program_name}' compiled/reloaded.`);
        return true;
    }

    // ---------------------------------------------------------------------
    // 2. CRASH-PROOF OBJECT CLONING (virtual_function routing)
    // ---------------------------------------------------------------------
    clone_object(program_name) {
        if (!this.blueprints.has(program_name)) this.load_program(program_name,
 {});
        
        const blueprint = this.blueprints.get(program_name);
        
        // A. STATE SEPARATION: Clone inherits functions, but holds its own
variables
        const clone = Object.create(blueprint);
        
        this.object_counter++;
        clone.__id = `OBJ_${this.object_counter}`;
        
        // B. THE PROXY SHIELD: Intercept missing method calls
        const safe_clone = new Proxy(clone, {
            get(target, prop, receiver) {
                // If it exists natively on the clone or blueprint, return it
normally
                if (prop in target) return Reflect.get(target, prop,
receiver);
                
                // Ignore JS internals to prevent engine panics
                if (typeof prop === 'symbol' || prop === 'inspect' || prop ===
'then') return undefined;

                // IT DOES NOT EXIST! Return a dynamic fallback function.
                return (...args) => {
                    if (typeof target.virtual_function === 'function') {
                        // Route to the object's custom virtual_function
handler!
                        return target.virtual_function(prop, ...args);
                    }
                    
                    // Failsafe: Prevent OS crash, print warning, return 0
(LPC standard)
                    console.log(`
[LPC SHIELD] Blocked crash! Call to undefined method: ->${String(prop)}(${args.
map(a=>JSON.stringify(a)).join(', ')})`);
                    return 0; 
                };
            }
        });

        this.memory_vault.set(clone.__id, safe_clone);
        return safe_clone;
    }
}

/ -------------------------------------------------------------------------
/ REPL SANDBOX & TRANSPILER
/ -------------------------------------------------------------------------
const engine = new LPCEngine();

/ The Sandbox provides the global API to the REPL
const sandbox = {
    clone_object: (name) => engine.clone_object(name),
    load_program: (name, logic) => engine.load_program(name, logic),
    printf: (...args) => {
        let str = args[0].replace(/%[sdifc]/g, () => args.splice(1, 1)[0] ??
'').replace(/\
/g, '
');
        process.stdout.write(str);
        return undefined;
    }
};

/ We wrap the Global REPL in a Proxy too, so typing gibberish doesn't kill the
REPL
const globalREPLContext = new Proxy(sandbox, {
    has(target, prop) { return typeof prop !== 'symbol'; },
    get(target, prop) {
        if (prop in target) return target[prop];
        if (typeof prop === 'symbol') return undefined;