fix(memory): forward BYOK chat model through /api/memory/extract #15363

Job	Run time
Resolve runner profiles	9s
Detect validation scopes	15s
Static gate	11s
Preflight	3m 11s
Web workspace tests	3m 41s
Workspace unit tests	1m 27s
UI P0 smoke	1m 55s
E2E Vitest	3m 45s
Playwright visual (settings-workspace)	3m 22s
Playwright visual (entry-navigation)	2m 40s
UI P0 (entry-settings)	5m 8s
UI P0 (project-runtime)	5m 39s
UI P0 (workspace-restoration)	5m 25s
UI P0 (project-workspace)	5m 4s
Docker image build	0s
Playwright critical (${{ matrix.group }})	0s
Validate Nix flake	0s
Windows tools-pack payload tests	0s
Validate workspace	7s
Runtime summary	7s
	42m 6s

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