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Please help me complete the safe value extraction (E Expression) logic for the `System Platform` object.

To ensure absolute correctness of the API, please refer to and strictly imitate the following **real `E` expression code example for `System Platform`**.

The `E` API preserves all three `teaql_core::eval::EvalResult` states until `.eval()`:

- `Value(value)` becomes `Some(value)`.
- `Null` means the field or relation was loaded and is legitimately absent, so it becomes `None`.
- `NotLoaded` means the query did not preload required data. This is a coding-logic error and `.eval()` intentionally panics with preload diagnostics; it does **not** become `None`.

When a default is needed for a legitimate `Null`, use `.or_if_null(value)`, `.or_else_if_null(|| value)`, or `.or_default_if_null()`. These methods deliberately preserve the same fail-fast behavior for `NotLoaded`; they are not a substitute for selecting required fields and relations in the query.

### Standard E Expression Example (Reference)
Please carefully observe how `E::platform(entity)` is used to chain safe `.get_xxx()` method calls down the relation graph, ending with `.eval()`.

```rust
use teaql_core::Entity;
use crm_erp_service_core::{E, Platform};

pub fn extract_value_example(entity: &Platform) -> Option<String> {
    // 1. Wrap the base entity in the E expression facade
    // Note: The module name is typically snake_case
    let value_opt = E::platform(entity)
        // --- Safe chainable getters (Uncomment and chain as needed) ---
        // .get_name()
        // .get_create_time()
        // .get_last_update_time()

        // --------------------------------------------------------------

        // 2. Evaluate the chain. Null becomes None; NotLoaded intentionally panics.
        .eval();

    // The result is an Option wrapper of the target value.
    value_opt
}
```

### Your Task
Please completely imitate the framework, imports, and syntax features of the above code to implement the safe value extraction logic for `System Platform` based on my specific business needs. Please output the Rust source code directly.