Fix:re-export XpFile, XpLayer, XpCell

[mors119]

What

Re-exports XpFile, XpLayer, and XpCell from bracket-terminal::rex, restoring their availability through the existing bracket-lib and rltk facade chain.

Why

rltk examples already rely on these RexPaint types being reachable through the facade path. Restoring the bracket-terminal::rex export point matches that existing structure while avoiding a broader bracket-rex prelude re-export that could introduce conflicts such as XpColor.

No related issue.

Checklist

Required

• cargo check --all passes
• cargo fmt --all -- --check passes
• cargo clippy --workspace --all-targets -- -D warnings -A clippy::multiple-crate-versions passes
• cargo test --all passes
• I linked the related issue (for example: Closes #123)

Functional Validation

• Behavior related to this change was verified locally (if applicable)
• Rendering/backend behavior was verified when runtime code changed (if applicable)
• Algorithm behavior (pathfinding/FOV/noise/random) was verified when affected (if applicable)
• I added or updated tests for changed behavior (if applicable)

Configuration & Docs

• User-facing docs were updated (README.md, ARCHITECTURE.md, or relevant manual pages, if applicable)
• New dependencies/configuration are documented (if applicable)
• No sensitive values or credentials were introduced

If Applicable

• Security impact considered (run cargo audit locally if needed)
• Breaking behavior changes are clearly described in this PR

Summary by CodeRabbit

• New Features
  • Expanded the public API to expose additional rexpaint-related types, enabling broader access to rexpaint file handling and manipulation.
• Tests
  • Added unit tests to verify the public prelude correctly exposes the rexpaint-related types and that those types integrate as expected.

[coderabbitai]

📝 Walkthrough

Walkthrough

The rex module now publicly re-exports three Xp types from bracket_rex::prelude — XpCell, XpFile, and XpLayer — and a unit test was added to verify crate::prelude re-exports those types. Existing functions remain unchanged.

Changes

Xp-Related Type Exports

Layer / File(s)	Summary
Xp-related type re-exports bracket-terminal/src/rex.rs	The module switches from a private XpFile import to public re-exports of XpCell, XpFile, and XpLayer, expanding the public API surface.
Test verifying prelude re-exports bracket-terminal/src/lib.rs	Adds a #[cfg(test)] unit test that constructs XpFile/XpLayer, extracts an XpCell, and type-checks it to ensure crate::prelude re-exports the rexpaint types.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Suggested reviewers

• utilForever

Poem

I nibble code beneath moon's light, 🐇
Three little types now hop in sight,
Cell, File, Layer — joined the show,
Prelude spreads so others know,
A tiny test gives cheer and might. ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: re-exporting three specific RexPaint types (XpFile, XpLayer, XpCell) from bracket-terminal, which aligns with the changeset that adds these re-exports to bracket-terminal/src/rex.rs and validates them via tests in lib.rs.
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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[mors119]

@coderabbitai review

[coderabbitai]

✅ Actions performed

Review triggered.

Note: CodeRabbit is an incremental review system and does not re-review already reviewed commits. This command is applicable only when automatic reviews are paused.

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@bracket-terminal/src/rex.rs`:
- Line 4: Add a colocated unit test that asserts the re-exports are publicly
reachable: create or update tests.rs (or the module's #[cfg(test)] tests) and
add a test function that references the three symbols XpCell, XpFile, and
XpLayer via the facade path (e.g., let _ : crate::rex::XpCell = /* use
default/constructed value or core type placeholder */; similarly for XpFile and
XpLayer) to ensure they compile when imported from the public re-export; keep
the test minimal (it only needs to name the types to verify the API surface).

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b9154e20-ba79-4ad7-bc7b-e7621f3e3f23

📥 Commits

Reviewing files that changed from the base of the PR and between fe7bf77 and 0db57cf.

📒 Files selected for processing (1)

• bracket-terminal/src/rex.rs

📜 Review details

🧰 Additional context used

📓 Path-based instructions (1)

**/*.rs

📄 CodeRabbit inference engine (AGENTS.md)

**/*.rs: Format all Rust code using cargo fmt --all
Fix all cargo clippy warnings — the CI enforces -D warnings
Add tests for new functionality in the relevant module; for split domains, prefer colocated tests.rs

Files:

• bracket-terminal/src/rex.rs