docs(subgroups): improve subgroup descriptions

[aj-emerich]

What changes are being made and why?

Currently, sub-group descriptions are repetitive and lack full contextualization. Trying to improve these to be more direct and include more information about the group of tasks.

[github-actions]

📦 Artifacts

Name	Size	Updated	Expiration
	186.88 MB	Dec 3, 25, 12:37:40 PM UTC	Dec 10, 25, 12:37:33 PM UTC

🧪 Java Unit Tests

	Tests	Passed ✅	Skipped ⚠️	Failed	Time ⏱
Java Tests Report	105 ran	59 ✅	46 ⚠️	0 ❌	2m 34s 702ms

🔁 Unreleased Commits

6 commits since v1.1.2

SHA	Title	Author	Date
d99fe32	feat(provider): introduce GitHubModels (#223)	François Delbrayelle	Nov 26, 25, 4:59:31 PM UTC
f423fbc	chore(deps): bump com.vanniktech.maven.publish from 0.34.0 to 0.35.0 (#221)	dependabot[bot]	Nov 26, 25, 5:14:18 PM UTC
30946bf	chore: update contributor guidelines in PR template	Malay Dewangan	Nov 27, 25, 7:45:44 AM UTC
e6962ac	chore(metadata): add plugin metadata (#214)	Malay Dewangan	Nov 27, 25, 5:51:44 PM UTC
9d4c2fb	docs: add a warning on function calling + response format (#225)	François Delbrayelle	Dec 2, 25, 10:17:49 AM UTC
f24b7e8	docs(ai_agent): add meaningful examples (#224)	François Delbrayelle	Dec 2, 25, 10:29:34 AM UTC