feat(web): add complete product documentation #284

Job	Run time
Web app	38s
npm launcher	13s
Static checks	17s
Protocol suite	1m 6s
macOS build and protocol suite	1m 42s
Linux E2E (Docker)	2m 13s
Agent runtime suite	18s
macOS E2E (WKWebView)	-1s
	6m 26s

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