Ticket 16: astro 5.18.2 -> 7.2.9 with @astrojs/vue 5.1.4 -> 7.0.2, one MR. sharp and vite each collapse to one copy (0.34.5 and 6.4.3 gone); allowBuilds drops sharp; the vite @ts-expect-error and the inert manualChunks block are deleted (rolldown rejects the object form); astro-relative-links pinned exactly; playwright.config.ts sets ASTRO_PREVIEW_BACKGROUND because astro 7 daemonizes preview under agent detection. Lockfile 916 -> 740 packages. Nine gates green: 34 files / 383 tests, astro check 0/0/1 hint, 6 pages in 2.43 s, page-smoke 6/6, chunk 577,029 B. Fork pages green in 517 s; all 6 live pages clicked through, 45 refs resolve at root and under a subpath. Before 7cc6d75, after 92ffb5e.