fix(tui): Clear the terminal buffer when the viewport is resized

[euxaristia]

Summary

Growing the terminal left stale cells on screen. draw() already renders a
Clear widget over frame.area(), but that only wipes the region ratatui
currently treats as the viewport, so cells the viewport just expanded into keep
whatever the terminal had in them.

Handling Event::Resize by calling terminal.clear() makes the next frame
start from a wiped buffer.

Changes

• src/tui.rs: replace the two early-continue guards in event_loop with a
  single match on event::read(), adding an Event::Resize(..) arm that
  clears the terminal. Key handling is unchanged.

Test plan

• cargo fmt --check
• RUSTFLAGS="-Dwarnings" cargo clippy --all-targets
• cargo test (155 unit tests + 2 doctests pass)
• Manual: run limits tui, shrink the terminal, then grow it back. Before this
  change the newly exposed rows held leftover shell output; after it they are
  blank and redrawn by the next frame.

Fixes #34

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 3ccc6c5c-4170-4f7c-b4e7-ab7d495131e1

📥 Commits

Reviewing files that changed from the base of the PR and between a3f5aeb and 36f3e51.

📒 Files selected for processing (1)

• src/tui.rs

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📝 Walkthrough

Walkthrough

The TUI now clears the terminal after resize events. The event loop passes only key-press events to the application and ignores other event types.

Changes

TUI resize handling

Layer / File(s)	Summary
Resize and key event handling src/tui.rs	Resize events clear the terminal before a fresh frame. Only key-press events reach the application. Other events are ignored.

Estimated code review effort: 2 (Simple) | ~5 minutes

Poem

I’m a rabbit with a freshly cleared screen,
No stale cells remain tucked in between.
Resize the terminal, draw anew,
Key presses hop through, as they should do.
Clean borders bloom in the view. 🐇

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

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