Function webui_render_partial 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn webui_render_partial(
    protocol_data: *const u8,
    protocol_len: usize,
    state_json: *const c_char,
    entry_id: *const c_char,
    request_path: *const c_char,
    inventory_hex: *const c_char,
) -> *mut c_char

Produce a complete JSON partial response for client-side navigation.

Combines route templates, inventory, and matched route chain into a single JSON string: {"templates":[...],"inventory":"...","chain":[...]}.

Arguments

• protocol_data - Pointer to protobuf binary data.
• protocol_len - Length of the protobuf data in bytes.
• entry_id - Null-terminated UTF-8 string for the persistent entry fragment.
• request_path - Null-terminated UTF-8 route path used to select the active route chain.
• inventory_hex - Null-terminated hex string of the client’s inventory bitmask (pass empty string "" if no inventory).

Returns

A heap-allocated JSON string, or NULL on error. Caller frees with webui_free.

Safety

• protocol_data must point to protocol_len bytes of valid memory.
• state_json, entry_id, request_path, and inventory_hex must be valid null-terminated UTF-8 strings.