test(tui): inline imperative screen configuration

[aidandaly24]

Description

Replace renderImperativeScreen with ordinary renderScreen calls that pass their configuration explicitly. This makes each test's opt-in visible and removes the wrapper's implicit enabled default. The shared config value remains, existing explicit overrides are preserved, and production behavior is unchanged.

Related Issue

Refs #2400. Follow-up to #2396.

Documentation PR

Not applicable: test-only refactoring.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe): simplify test setup.

Testing

3,563 tests passed with 98.00% line coverage. Structural comparison verified 323 migrated calls: 320 explicit defaults, three preserved overrides, and no changes to the 16 pre-existing ordinary renderScreen calls in affected files.

• I ran bun test
• I ran the relevant end-to-end tests with bun run test:e2e, or explained why they are not applicable
• I ran bun run typecheck
• I ran bun run lint:check
• I ran bun run format:check
• I ran bun run build
• If I modified src/assets/, I updated affected snapshots with bun test <test-file> --update-snapshots and committed them

Deployment E2E tests are not applicable because this only changes test setup. Existing CLI and TUI behavior tests ran in the full suite. No assets changed.

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature, or no new docs are needed
• My changes generate no new warnings
• Any dependent changes have been merged and published

---

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[agentcore-devx-automation]

Claude Security Review: no high-confidence findings. (run)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.25%. Comparing base (7d8f74d) to head (8469927).

Additional details and impacted files

@@            Coverage Diff            @@
##           refactor    #2401   +/-   ##
=========================================
  Coverage     97.25%   97.25%           
=========================================
  Files           612      612           
  Lines         41019    41019           
=========================================
+ Hits          39893    39894    +1     
+ Misses         1126     1125    -1     

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