[tlambert03]

Follow-up to #163. This adds LASER_405, LASER_445, LASER_488, LASER_515, LASER_561 and LASER_640 to microsim.schema.optical_config.lib: a laser line, a dichroic (main beam splitter) and an emission bandpass. The filters are generic (not specific products). power defaults to 1e5 W/cm² (peak irradiance at the focus... about 50 µW at NA 1.4), so they work out of the box:

from microsim.schema.optical_config.lib import LASER_488

sim = ms.Simulation(..., channels=[LASER_488], detector=HYD_SP8, exposure_ms=0.002)

# or, for a different power
LASER_488.model_copy(update={"power": 1e4})

Now that confocal actually computes excitation at the excitation wavelength, it felt pretty wrong for all of our confocal examples to be using broadband widefield filter cubes with the mock fluorophore and a CCD. So the confocal examples, docs and notebooks now use laser lines, a HyD detector, and realistic pixel dwell times (a few µs). A few other things along the way:

• the README/quickstart example stays minimal (just defaults, now with a 1 AU pinhole rather than 0.2), and the docs get a separate "more realistic confocal" example right after it. Both figures are regenerated.
• re-executed the tutorial and example notebooks (and stripped the log spam out of their outputs)
• fpbase_scope.py now uses widefield, since its filter set is a widefield cube
• docs/index.md now fetches EGFP from FPbase, so that doc test is skipped when offline (like stages.md already was)

Smarter defaults for Confocal() (e.g. a laser channel rather than the FITC cube when you don't pass channels) would be nice too, but I'll leave that for a follow-up.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.06%. Comparing base (429e6e4) to head (45964f3).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #164      +/-   ##
==========================================
- Coverage   89.14%   89.06%   -0.09%     
==========================================
  Files          51       51              
  Lines        3483     3483              
==========================================
- Hits         3105     3102       -3     
- Misses        378      381       +3     

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