docs: Improve API doc groups and polish docstrings #240

Job	Run time
PR title check	5s
Code checks / Actions lint check	28s
Docstrings checks / Docstrings checks	19s
Code checks / Spell check	8s
Doc checks / Doc checks / Docs check	1m 31s
Code checks / Lint check / Lint check (3.11)	10s
Code checks / Lint check / Lint check (3.12)	12s
Code checks / Lint check / Lint check (3.13)	15s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	35s
Code checks / Lint check / Lint check (3.14)	12s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	33s
Code checks / Type check / Type check (3.13)	11s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	51s
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, 3.12)	38s
Code checks / Type check / Type check (3.12)	11s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	51s
Code checks / Type check / Type check (3.14)	18s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	50s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.11)	1m 24s
Tests / Integration tests / Integration tests (ubuntu-latest, 3.14)	1m 27s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	56s
	12m 54s

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