"""
SRAS Scan File Viewer
PyQt6 application for visualizing channel data from .sras binary scan files.

Channel semantics (fixed by sc3_aui_app.py acquisition settings):
  CH1 — RF Acoustic Packet (AC-coupled, 100 mV/div): FFT → peak frequency
  CH3 — Bias A (DC-coupled, 50 mV/div): waveform mean
  CH4 — Bias B (DC-coupled, 50 mV/div): waveform mean

RF images are masked: pixels where CH4_dc < dc_threshold show 0.

File parsing lives in sras_format, image/alignment math in sras_compute, and
background workers in sras_workers — none of which import Qt or matplotlib,
so multiprocessing children can load them cheaply.
"""

import faulthandler

faulthandler.enable()   # print a native stack trace on SIGSEGV/SIGABRT/etc.

from .canvases import ImageCanvas, RoiQuad, WaveformCanvas           # noqa: E402,F401
from .common import CH_LABELS, CMAPS, VELOCITY_MODE_IDX              # noqa: E402,F401
from .dialogs import (                                                # noqa: E402,F401
    FftOptionsDialog, ManualAlignmentDialog, RowAverageFftOptionsDialog,
)
from .main_window import SrasViewerWindow, main                      # noqa: E402,F401