Sync upstream changes through 2026-06-22

[earayu]

Closes #62

Summary

• Sync upstream aaif-goose/goose from d2a921a75 through 659257316.
• Bring in typed ACP add/get session extension requests and generated schema/client updates.
• Remove upstream's "create recipe from session" Desktop modal/API surface; in this fork that removes the corresponding "Create Workflow from Session" entry point.
• Use ACP newSession for non-recipe Desktop sessions.

Upstream commits

• 2712c066b / feat (acp): used typed request and response for add, get session extensions aaif-goose/goose#9890: feat (acp): used typed request and response for add, get session extensions.
• b893b5f2 / chore: removed create recipe from session modal and rest api aaif-goose/goose#9916: chore: removed create recipe from session modal and rest api.
• 659257316 / feat(ui): use acp new session on desktop (only for non recipe session) aaif-goose/goose#9914: feat(ui): use acp new session on desktop (only for non recipe session).

Conflict handling

• Preserved ApeMind branding in BaseChat: logo/watermark remains ApeMind Agent, and RECIPE_TRUST_WARNINGS_ENABLED = false remains unchanged.
• Preserved ParameterInputModal cancel/close navigation back to /pair.
• Preserved en/zh ApeMind Agent task notification strings and Workflows/工作流 wording.
• Accepted upstream removal of the create-recipe-from-session modal, REST API, generated API methods, tests, and i18n keys because that feature was removed upstream.
• Took upstream ACP/OpenAPI/generated SDK/schema updates for the typed request/session changes.

Validation

• git grep -n "^<<<<<<< HEAD$" found no conflict markers.
• git diff --check origin/main...HEAD
• corepack pnpm@10.30.0 --filter @aaif/goose-sdk run build
• corepack pnpm@10.30.0 run lint:check in ui/desktop (passes; existing FormatJS duplicate-id warning for task-complete notification remains).
• corepack pnpm@10.30.0 run test:run in ui/desktop (43 files / 411 tests passed).

Rust local check was not run on this machine because cargo/rustup are not present in PATH.