chore: remove unused test exports GetLocalDiffStats and WatchPRState

[euxaristia]

Summary

Remove dead test helper exports GetLocalDiffStats and WatchPRState from internal/tui/export_test.go, which were left unreferenced following #706.

Changes

• internal/tui/export_test.go: Remove GetLocalDiffStats, WatchPRState, and unused context/os imports.

Test plan

• go run golang.org/x/tools/cmd/deadcode@latest -test ./... passes.
• go fmt ./... and go vet ./... pass.
• go test ./internal/tui/... passes.
• go run ./cmd/zero-release build and smoke pass.
• git diff HEAD --check clean.

Refs #904

Summary by CodeRabbit

• Tests
  • Removed two test-only helper functions that exposed local diff statistics and pull request state monitoring.
  • Simplified test support imports and setup.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 27b319c and 1535a24.

📒 Files selected for processing (1)

• internal/tui/export_test.go

💤 Files with no reviewable changes (1)

• internal/tui/export_test.go

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Walkthrough

The test export file removes two exported helper functions and their unused context and os imports.

Changes

Test seam cleanup

Layer / File(s)	Summary
Remove obsolete test helpers internal/tui/export_test.go	Removes GetLocalDiffStats and WatchPRState, plus their unused imports.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 1535a

This is a narrowly scoped cleanup of unused test-only code with no actionable merge-blocking risk remaining after normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: removing the unused test exports GetLocalDiffStats and WatchPRState.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[Vasanthdev2004]

Checked both symbols across the tree and neither has a caller. TestGetLocalDiffStatsFallsBackToOriginBase reads like it uses the exported wrapper but calls the unexported getLocalDiffStats directly, and WatchPRStateContext is the one model.go actually uses and is untouched.

Built and ran internal/tui on the head: green, go vet clean, gofmt clean. Branch is current with main.

Nice cleanup.