docs: Improve API doc groups and polish docstrings #255

Job	Run time
Code checks / Actions lint check	31s
Docstrings checks / Docstrings checks	19s
PR title check	3s
Doc checks / Doc checks / Docs check	1m 25s
Code checks / Spell check	5s
Code checks / Lint check / Lint check (3.12)	10s
Code checks / Type check / Type check (3.12)	10s
Code checks / Type check / Type check (3.14)	9s
Code checks / Lint check / Lint check (3.13)	17s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	54s
Code checks / Lint check / Lint check (3.14)	11s
Code checks / Lint check / Lint check (3.11)	10s
Code checks / Type check / Type check (3.13)	10s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	41s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 0s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	40s
Code checks / Type check / Type check (3.11)	9s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	38s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	47s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	38s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 12s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.11)	1m 11s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.14)	1m 7s
	12m 37s

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