feat(eval): read-only batch-evaluation TUI (list + get)

[jariy17]

What

Adds the read-only TUI for agentcore eval batch-evaluation, wiring it into the eval TUI alongside evaluator and online-eval:

• list — a paginated, searchable table of batch evaluations (BatchEvaluationPicker over PaginatedTablePicker). Enter on a row opens that job.
• get — a raw-JSON detail screen (JsonDetail). No metadata hub: the value is the full response (job metadata + per-session results), which the JSON shows cleanly. Unwraps getBatchEvaluation's { detail } (metadata + merged CloudWatch results).
• menu — BatchEvaluationScreen (RouterScreen). This route is mandatory: the eval menu already lists batch-evaluation, and without a route the entry falls through to the HelpScreen catch-all and exits the app.

A bare agentcore eval batch-evaluation now opens the TUI (renderTui + withTuiOnEmptyFlagsAndArgs) instead of printing help.

Demo

Files

• src/components/BatchEvaluationPicker.tsx — list body (columns/toRow/loadPage), mirrors OnlineEvalPicker.
• src/handlers/eval/batch-evaluation/list/screen.tsx — BatchEvaluationListScreen; enter → get.
• src/handlers/eval/batch-evaluation/get/screen.tsx — BatchEvaluationGetJsonScreen + useBatchEvaluationDetail.
• src/handlers/eval/batch-evaluation/screen.tsx — BatchEvaluationScreen menu.
• index.tsx re-wired to renderTui; Root.tsx gets the menu + list + bare-get-redirect + get/:id routes.

Testing

• batch-evaluation.screen.test.tsx — menu (get/list), picker (rows, Core-options, bare-get redirect, selection → JSON, empty), detail (full JSON incl. merged results, CloudWatch-failure-degrades, retry).
• Full suite: 752 pass, typecheck + lint clean.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.81%. Comparing base (fbb0cee) to head (30585a8).

Additional details and impacted files

@@                           Coverage Diff                           @@
##           feat/eval-batch-evaluation-readonly    #1938      +/-   ##
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+ Coverage                                95.78%   95.81%   +0.02%     
=======================================================================
  Files                                      296      300       +4     
  Lines                                    16431    16546     +115     
=======================================================================
+ Hits                                     15738    15853     +115     
  Misses                                     693      693              

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