docs: Improve API doc groups and polish docstrings #241

Job	Run time
PR title check	3s
Code checks / Actions lint check	29s
Code checks / Spell check	7s
Docstrings checks / Docstrings checks	21s
Doc checks / Doc checks / Docs check	1m 30s
Code checks / Lint check / Lint check (3.12)	12s
Code checks / Lint check / Lint check (3.13)	14s
Code checks / Type check / Type check (3.11)	13s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	33s
Code checks / Lint check / Lint check (3.14)	11s
Code checks / Type check / Type check (3.13)	10s
Code checks / Type check / Type check (3.12)	16s
Code checks / Lint check / Lint check (3.11)	11s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	45s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	34s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 2s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	38s
Code checks / Type check / Type check (3.14)	16s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	58s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	51s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	58s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.14)	1m 27s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.11)	1m 29s
	13m 28s

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