Upgrade eve to 0.55.0 and adopt native channel behavior

[fmhall]

Upgrades OpenInstinct from the pinned eve 59ec96c build to the released 0.55.0 package and adopts the native task and channel behavior needed by the application. Release notes.

Behavior and compatibility

• Remove the deleted task_update tool. Use native same-agent steering for revised browser assignments and retain task_cancel for stop-only requests.
• Preserve the existing HTTP channel adapter when wrapping ownership routes. Rebuilding an already compiled channel discarded its delivery hooks and audience classifier.
• Classify authenticated scheduled-worker conversations as private through audience().
• Use <eve-empty-delivery/> for unchanged scheduled reports. The live lifecycle eval caught empty model responses under the previous “finish silently” instruction; the native marker completes suppression successfully.
• Retarget the byte-identical Linq compatibility patch and update test contexts for the new effective-model field. Other dependency versions and model selections are unchanged.

Validation

• pnpm check: passed; 83 test files, 719 tests, plus lint, types, formatting, and Knip.
• pnpm build and pnpm build:eve: passed.
• pnpm eval:agent --tag lifecycle --verbose: passed all 17 gates using an isolated database; confirmed a changed report was delivered and an unchanged report was suppressed.
• Bundled Linq adapter regression verifies reply, media, and idempotency fields.
• Independent review and one re-review completed with no remaining findings.
• GitHub Checks and Vercel preview passed for 2a3386b; the preview health endpoint returned ok: true, status: ready.

Known limitation

The separately investigated fresh-process Dynamic tool callback rebind did not restore failure still reproduces in eve 0.55.0. This upgrade does not fix that incident. Production rollout and a production cold-resume test remain separate from this draft PR.