Sync upstream changes through 2026-07-02

[earayu]

Summary

Closes #88.

Syncs upstream aaif-goose/goose main from f150672e2 through 27958c4c2 (18 commits).

Major upstream changes included:

• Desktop ACP migration: connect to ACP directly instead of the old generated REST/goosed API path; removes generated desktop REST client and goosed integration harness.
• Desktop auto-update and release testing updates, including mac app update config/resources.
• Declarative provider support moved into goose-providers, plus provider fixes for image path unescaping, Databricks tool parameters, and partial Responses output items.
• ACP auth/origin defaults updates.
• Removes evals/open-model-gym upstream eval suite.
• Dependency/action/docs updates and schema regeneration.

Conflict / brand handling

• ui/desktop/forge.config.ts: kept ApeMind Agent executable/resource customizations and added upstream src/app-update.yml extra resource.
• ExternalBackendSection.tsx + en.json: kept ApeMind Agent branding while adopting upstream ACP-compatible backend wording.
• renderer.tsx: accepted upstream direct-ACP initialization, removing the old goosed REST client initialization.
• UpdateSection.tsx + en.json: fixed new auto-update copy from Goose to ApeMind Agent.
• useAcpChatSession.ts: migrated stale generated-API type import to the new local types/* exports after upstream removed src/api.

Local validation

• git diff --check
• git grep -n "^<<<<<<< HEAD$" (no matches)
• node -e "JSON.parse(require('fs').readFileSync('ui/desktop/src/i18n/messages/en.json','utf8'))"
• corepack pnpm@10.30.0 --filter @aaif/goose-sdk run build
• PATH="$PWD/bin:$PATH" cargo fmt --all --check
• PATH="$PWD/bin:$PATH" just check-acp-schema
• corepack pnpm@10.30.0 --dir ui/desktop run i18n:extract
• corepack pnpm@10.30.0 --dir ui/desktop run lint:check
• corepack pnpm@10.30.0 --dir ui/desktop run test:run (55 files / 510 tests)
• PATH="$PWD/bin:$PATH" cargo test -p goose-providers --features "rustls-tls" --lib (379 tests)
• PATH="$PWD/bin:$PATH" cargo test -p goose --features "rustls-tls,code-mode" acp --lib (168 tests)
• PATH="$PWD/bin:$PATH" cargo test -p goose-cli --features "rustls-tls,code-mode" session --lib (143 tests)

Merge gate

This sync includes upstream aaif-goose#10174 deleting evals/open-model-gym, producing a net deletion above 1000 lines. Per HARD RULE 4, do not merge this PR on green CI alone; it needs explicit @earayu2 merge authorization.