feat(prompts): optimize Open Design system prompt #16666

Job	Run time
Resolve runner profiles	13s
Detect validation scopes	13s
Static gate	14s
E2E Vitest	13m 22s
Workspace unit tests	1m 49s
Preflight	3m 27s
UI P0 (workspace-restoration)	7m 20s
Playwright visual (entry-navigation)	4m 23s
Web workspace tests	6m 49s
UI P0 (project-workspace)	7m 52s
UI P0 (project-runtime)	7m 21s
UI P0 (entry-settings)	8m 12s
Playwright visual (settings-workspace)	4m 58s
Windows tools-pack payload tests	2m 28s
Playwright critical (${{ matrix.group }})	0s
Validate workspace	3s
Runtime summary	5s
	1h 8m 49s

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