[Landing] Update headings and descriptions for clarity in README, installation, and quickstart guides to amplify agentic orchestration (WIP) #6725

Job	Run time
compute-version	2s
build-docs / build-docs	1m 35s
build-artifacts / gateway-build	16s
build-artifacts / code-lint	43s
build-artifacts / frontend-build	11s
build-artifacts / runner-test (macos-latest)	1m 12s
build-artifacts / runner-test (ubuntu-latest)	59s
build-artifacts / generate-json-schema	19s
build-artifacts / python-build	26s
build-artifacts / python-test (macos-latest, 3.12)	2m 49s
build-artifacts / python-test (macos-latest, 3.10)	2m 36s
build-artifacts / python-test (macos-latest, 3.13)	2m 50s
build-artifacts / python-test (ubuntu-latest, 3.10)	10m 12s
build-artifacts / python-test (ubuntu-latest, 3.9)	10m 35s
build-artifacts / python-test (ubuntu-latest, 3.13)	9m 25s
build-artifacts / python-test (ubuntu-latest, 3.12)	10m 9s
build-artifacts / python-test (windows-latest, 3.11)	2m 28s
build-artifacts / python-test (macos-latest, 3.11)	2m 46s
build-artifacts / python-test (windows-latest, 3.9)	2m 52s
build-artifacts / python-test (windows-latest, 3.13)	2m 26s
build-artifacts / python-test (ubuntu-latest, 3.11)	9m 35s
build-artifacts / python-test (macos-latest, 3.9)	2m 41s
build-artifacts / python-test (windows-latest, 3.10)	2m 14s
build-artifacts / python-test (windows-latest, 3.12)	2m 46s
build-artifacts / runner-compile (ubuntu-24.04, linux, amd64)	23s
build-artifacts / runner-compile (ubuntu-24.04-arm, linux, arm64)	25s
upload-post-pypi-artifacts / upload-post-pypi-artifacts	20s
upload-pre-pypi-artifacts / upload-pre-pypi-artifacts	20s
	1h 23m 35s

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