docs: Improve API doc groups and polish docstrings #254

Job	Run time
PR title check	4s
Code checks / Actions lint check	27s
Docstrings checks / Docstrings checks	21s
Doc checks / Doc checks / Docs check	1m 22s
Code checks / Spell check	7s
Code checks / Lint check / Lint check (3.13)	11s
Code checks / Lint check / Lint check (3.11)	12s
Code checks / Type check / Type check (3.12)	9s
Code checks / Lint check / Lint check (3.14)	12s
Code checks / Lint check / Lint check (3.12)	12s
Code checks / Type check / Type check (3.13)	12s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	59s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	38s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	54s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	37s
Code checks / Type check / Type check (3.11)	9s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 3s
Code checks / Type check / Type check (3.14)	12s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	34s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	37s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	57s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.11)	1m 2s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.14)	1m 23s
	12m 34s

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