# Core

Registered with `register_addon_core(engine)`.

> Runtime functions (heap, budget, events, coroutines, counters, assert, time\_ms) are auto-registered by the engine, no addon needed.

## Output

```c
print("hello")            // no newline
println("hello")           // with newline
println("x = " + x)        // concat
print(42)                  // int → string via .convert()
print(3.14)                // float → string
print(true)                // "true"/"false"
print('A')                 // char → single-char string
println(format("x={d} y={f}", x, y))   // format helper
```

Non-string args auto-convert via the `string` type's `.convert(...)` table.


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