Various Doctest Fixes

[henrydingliu]

Summary of Changes

Fixing previously un-executed failing doctests

Related GitHub Issue(s)

#1089

Additional Context for Reviewers

the doctest setup itself is not modified in this PR, only the doctests themselves. the same changes are also pushed to #1091, and passes actual execution

• I passed tests locally for both code (uv run pytest) and documentation changes (uv run jb build docs --builder=custom --custom-builder=doctest)

---

Note

Low Risk
Documentation-only edits to doctest blocks; no application logic or public API behavior changes.

Overview
Updates docstring doctests so they match actual output when executed via the docs doctest builder (#1089). No runtime or test-setup logic changes.

Common.pipe — adds the missing expected triangle printout for the loc[..., 48:] example.

ClarkLDF — switches omega_ / theta_ rounding from 3 to 2 decimals and refreshes the expected grouped LOB table layout.

IBNR methods (Benktander, BornhuetterFerguson, Chainladder, CapeCod) — small doctest hygiene: remove stray blank lines in testcode, assign intermediates before print where needed, and fix Sphinx directives (.. testoutput:: instead of .. testoutput:).

^{Reviewed by Cursor Bugbot for commit a568e33. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

Pyright Type Completeness

View the full pyright --verifytypes output for this commit

Project (full chainladder package, at this PR's head): 14.7% of exported symbols fully typed (184 / 1252)

	Known	Ambiguous	Unknown	Total
Project (head)	184	106	962	1252

Other symbols referenced but not exported by chainladder: 13

	Known	Ambiguous	Unknown	Total
Other (head)	3	1	9	13

Symbols without documentation:

• Functions without docstring: 313
• Functions without default param: 0
• Classes without docstring: 10

Patch (exported symbols added or changed by this PR): no exported symbol type-completeness changes detected.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.43%. Comparing base (c45d10b) to head (a568e33).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1101      +/-   ##
==========================================
+ Coverage   90.06%   90.43%   +0.36%     
==========================================
  Files          91       91              
  Lines        5287     5299      +12     
  Branches      671      676       +5     
==========================================
+ Hits         4762     4792      +30     
+ Misses        370      361       -9     
+ Partials      155      146       -9     

Flag	Coverage Δ
unittests	90.43% <ø> (+0.36%)	⬆️

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