Migrate Eve to upstream fixes and minimize compatibility patches

[fmhall]

OpenInstinct's Eve 0.49.0 runtime could repeatedly ask the model to acknowledge the same background task after each message delivery. This migrates to the official immutable upstream build at 59ec96cc99f65a80f7a2daf4ca5e2a0ad95455f2 (0.52.2+main.59ec96cc99f65a80), including the merged turn-context fix in vercel/eve#3089 and the other fixes on that revision. npm's 0.52.2 release does not contain that fix.

Migration

• Update Eve and its AI SDK, Zod, and evlog cohort; remove the obsolete experimental.tasks flag because subagents now run in the background by default.
• Use native defaultTools: false for the static root and explicitly export its existing supported tools. Keep the dynamic browser worker's existing tool exclusions: Eve rejects defaultTools in runtime-selected configurations.
• Adapt benchmark progress to delta-only message events and browser traces to workflow-tool actions.
• Move existing callback authorization into the app's channel definition using public defineChannel and routeAuth APIs.

Remaining patches

Remove the old tool-export, null-verifier, and framework callback-auth patches. Retain native Linq threaded-reply support in the separately installed adapter and Eve's bundled adapter, plus declaration bridges for incomplete bundled Linq/Chat exports. Document the upstream pin, checksum, and removal conditions in patches/README.md. No local task-loop or prompt-placement patch is applied.

Validation

• pnpm install --frozen-lockfile
• pnpm check: 705 tests plus lint, types, formatting, and Knip
• pnpm build
• pnpm exec eve build
• Actual bundled Linq adapter request test covers reply, attachment, and idempotency fields.
• Browser-worker regression invokes Eve's actual dynamic configuration normalizer.
• Local replay with the production model and reconstructed conversation: one mocked send_message, then DELIVERY_COMPLETE, in two model calls. No real messages or hotel actions were performed.

This is a pinned upstream-main build pending a registry release containing the fix. Client and server move together through the shared Eve dependency. Production has not been deployed.