[fmhall]

Scheduled browser runs completed after the Eve 1.0 upgrade, but web-chat reports stayed pending: /internal/scheduled-run/report reached Next's fallback page, whose HTTP 200 response was treated as success. Route both internal callbacks to the generated Eve service and require the handler's 202 acknowledgment for reports and answers.

The chat now renders native questions, approvals, sign-ins, and runtime failures in its default view. Cancelled calls show “Cancelled” with an explanation; failed calls open with recorded details or a fallback. Paginated history retains admission events for every displayed turn, including messages queued before the loaded tail, so user messages survive reload. Partial usage is labeled as saved or loaded usage and cannot replace a complete saved total.

Validation:

• pnpm check: 890 tests across 96 files; lint, types, formatting, and Knip pass.
• pnpm test:runtime: 2 evals and 16 gates pass.
• pnpm build and pnpm build:eve pass.
• Independent review and one re-review complete with no outstanding findings.
• Hosted Vercel preview: both callbacks return 401 without authentication. Project OIDC authentication reaches the report handler (202) and answer handler (409 for a nonexistent run), instead of the previous HTML 200 fallback. No real run was dispatched or resumed.

Related to #184. Production code/configuration has not been changed outside this branch.