[Landing] Update headings and descriptions for clarity in README, installation, and quickstart guides to amplify agentic orchestration (WIP) #6731

Job	Run time
compute-version	3s
build-docs / build-docs	1m 21s
build-artifacts / runner-test (macos-latest)	51s
build-artifacts / code-lint	45s
build-artifacts / runner-test (ubuntu-latest)	1m 9s
build-artifacts / frontend-build	7s
build-artifacts / gateway-build	14s
build-artifacts / generate-json-schema	26s
build-artifacts / python-build	18s
build-artifacts / python-test (macos-latest, 3.12)	3m 9s
build-artifacts / python-test (macos-latest, 3.9)	4m 9s
build-artifacts / python-test (ubuntu-latest, 3.9)	8m 42s
build-artifacts / python-test (macos-latest, 3.10)	2m 35s
build-artifacts / python-test (macos-latest, 3.11)	2m 49s
build-artifacts / python-test (ubuntu-latest, 3.13)	8m 15s
build-artifacts / python-test (macos-latest, 3.13)	2m 45s
build-artifacts / python-test (windows-latest, 3.12)	2m 30s
build-artifacts / python-test (ubuntu-latest, 3.11)	9m 34s
build-artifacts / python-test (windows-latest, 3.9)	6m 8s
build-artifacts / python-test (windows-latest, 3.13)	2m 20s
build-artifacts / python-test (windows-latest, 3.10)	2m 16s
build-artifacts / python-test (ubuntu-latest, 3.10)	9m 36s
build-artifacts / python-test (ubuntu-latest, 3.12)	9m 58s
build-artifacts / python-test (windows-latest, 3.11)	2m 30s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	32s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	33s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	20s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	24s
	1h 24m 19s

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