e2e: project-picker-recent-search.spec.ts skipped on the fork — port to a v2 projects surface

[aarontrowbridge]

Upstream's v1.18.12 spec packages/app/e2e/regression/project-picker-recent-search.spec.ts (search-across-all-recent-projects, #40202) is skipped on the fork as of the 1.18.12 sync (#119).

Why: the spec drives upstream's home-projects surface — an "Add project" button on the home page opening DialogSelectDirectory. The fork does not render that surface:

• NewHome (the Amicode v2 home, ADR 0001) has no add-project entry point — projects live in a titlebar flyout without an add affordance.
• The legacy interface is compile-time retired in this build (packages/app/src/context/settings.tsx: newLayoutDesigns = createMemo(() => true)), so the legacy home the spec could have driven is unreachable.
• home-projects-view.tsx (upstream's surface with the button) ships as dead code here — nothing renders <HomeProjects>.

What still ships: the v1.18.12 five-cap + search-all logic itself (dialog-select-directory.tsx, upstream 3016830e2) — reachable via every useDirectoryPicker consumer. Only the e2e coverage of it is fork-blocked.

Re-enable path: when a v2 projects surface gains an add-project entry, restore the spec with the fork's entry selector; or cover DialogSelectDirectory at component level. Local archaeology (seeds, layout-migration clobber, page snapshots) is in the #119 discussion.