Method push

capstone/sensor_pipeline.hpp:38–48

Producer: push with bounded blocking

public:
    // Producer: push with bounded blocking
    bool push(const T& item) {
        std::unique_lock<std::mutex> lock(mux_);
        cv_space_.wait(lock, [this] { return count_ < N || !active_; });
        if (!active_) return false;

        buffer_[(head_ + count_) % N] = item;
        ++count_;
        lock.unlock();
        cv_data_.notify_one();
        return true;
    }

    // Consumer: pop with blocking wait (Module 08: std::optional)
    [[nodiscard]] std::optional<T> pop() {