[Landing] Update headings and descriptions for clarity in README, installation, and quickstart guides to amplify agentic orchestration (WIP) #6730

Job	Run time
compute-version	3s
build-docs / build-docs	1m 16s
build-artifacts / frontend-build	8s
build-artifacts / gateway-build	10s
build-artifacts / runner-test (macos-latest)	1m 4s
build-artifacts / code-lint	49s
build-artifacts / runner-test (ubuntu-latest)	1m 10s
build-artifacts / generate-json-schema	25s
build-artifacts / python-build	18s
build-artifacts / python-test (macos-latest, 3.12)	3m 14s
build-artifacts / python-test (macos-latest, 3.10)	2m 39s
build-artifacts / python-test (macos-latest, 3.9)	2m 42s
build-artifacts / python-test (macos-latest, 3.11)	2m 41s
build-artifacts / python-test (ubuntu-latest, 3.9)	10m 35s
build-artifacts / python-test (ubuntu-latest, 3.12)	9m 58s
build-artifacts / python-test (ubuntu-latest, 3.10)	10m 9s
build-artifacts / python-test (windows-latest, 3.10)	2m 8s
build-artifacts / python-test (ubuntu-latest, 3.11)	9m 32s
build-artifacts / python-test (windows-latest, 3.9)	2m 43s
build-artifacts / python-test (ubuntu-latest, 3.13)	9m 7s
build-artifacts / python-test (macos-latest, 3.13)	2m 56s
build-artifacts / python-test (windows-latest, 3.13)	2m 15s
build-artifacts / python-test (windows-latest, 3.11)	2m 4s
build-artifacts / python-test (windows-latest, 3.12)	2m 35s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	33s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	29s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	16s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	21s
	1h 22m 20s

Provide feedback