chore(tui): remove smg-tui crate and related dependencies

[key4ng]

Description

Problem

The smg-tui crate is too heavy to live alongside the gateway in this repo. It is being moved to a standalone repository.

Solution

Remove the smg-tui crate and all of its references and dependencies from the workspace.

Changes

• Delete the tui/ crate (smg-tui) — all source, README, and demo assets
• Remove the tui workspace member and the smg-tui workspace dependency from Cargo.toml
• Drop the tui/** path filter from the Rust PR CI workflow (pr-test-rust.yml)
• Remove the incidental TUI mention from docs/reference/metrics.md
• Remove the now-stale ratatui entry from the codespell ignore list (.pre-commit-config.yaml)

ratatui and crossterm were used only by the TUI and are pruned from the lockfile. No other crate depended on smg-tui.

Test Plan

• cargo +nightly fmt --all -- --check — clean
• cargo clippy --all-targets --all-features -- -D warnings — zero warnings
• cargo test --workspace — all pass, 0 failures
• Repo-wide grep confirms zero remaining smg-tui / ratatui / crossterm references

Checklist

• cargo +nightly fmt passes
• cargo clippy --all-targets --all-features -- -D warnings passes
• (Optional) Documentation updated
• (Optional) Please join us on Slack #sig-smg to discuss, review, and merge PRs

Summary by CodeRabbit

• Removed Features

  • Removed the terminal user interface (TUI) dashboard and all TUI-driven functionality.

• Chores

  • Updated CI/workflow triggers and workspace configuration to reflect the TUI removal.
  • Updated documentation to stop referencing the TUI and describe metrics endpoint as used by dashboards.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 9921991c-6c12-4d42-876f-9b901bae5ea5

📥 Commits

Reviewing files that changed from the base of the PR and between 64c1c5c and 3bec06e.

⛔ Files ignored due to path filters (2)

• tui/assets/add-worker.gif is excluded by !**/*.gif
• tui/assets/tui-demo.gif is excluded by !**/*.gif

📒 Files selected for processing (30)

• .github/workflows/pr-test-rust.yml
• .pre-commit-config.yaml
• Cargo.toml
• docs/reference/metrics.md
• tui/Cargo.toml
• tui/README.md
• tui/src/app.rs
• tui/src/chat.rs
• tui/src/client.rs
• tui/src/event.rs
• tui/src/lib.rs
• tui/src/main.rs
• tui/src/state.rs
• tui/src/types.rs
• tui/src/ui/action_menu.rs
• tui/src/ui/chat.rs
• tui/src/ui/detail.rs
• tui/src/ui/dialog.rs
• tui/src/ui/filter.rs
• tui/src/ui/footer.rs
• tui/src/ui/help.rs
• tui/src/ui/logs.rs
• tui/src/ui/mod.rs
• tui/src/ui/models.rs
• tui/src/ui/pulse.rs
• tui/src/ui/sparkline.rs
• tui/src/ui/stats_bar.rs
• tui/src/ui/tabs.rs
• tui/src/ui/theme.rs
• tui/src/ui/workers.rs

💤 Files with no reviewable changes (27)

• tui/src/ui/dialog.rs
• tui/src/lib.rs
• tui/Cargo.toml
• tui/src/ui/sparkline.rs
• tui/src/ui/models.rs
• tui/src/ui/help.rs
• tui/src/ui/theme.rs
• tui/src/ui/logs.rs
• tui/src/state.rs
• tui/src/event.rs
• tui/README.md
• tui/src/ui/footer.rs
• tui/src/app.rs
• tui/src/ui/mod.rs
• tui/src/ui/tabs.rs
• tui/src/ui/chat.rs
• tui/src/ui/stats_bar.rs
• tui/src/ui/workers.rs
• tui/src/ui/filter.rs
• tui/src/client.rs
• tui/src/chat.rs
• tui/src/ui/detail.rs
• tui/src/ui/action_menu.rs
• tui/src/types.rs
• tui/src/ui/pulse.rs
• tui/src/main.rs
• .github/workflows/pr-test-rust.yml

---

📝 Walkthrough

Walkthrough

Remove the tui crate from the workspace and workspace dependencies, update CI detect-changes path filters to stop triggering on TUI files and include Rust/CI paths, and adjust codespell config and metrics docs wording accordingly.

Changes

TUI Crate Removal & Workspace Updates

Layer / File(s)	Summary
Workspace membership and dependency Cargo.toml	Removed tui from workspace members and removed the [workspace.dependencies] alias smg-tui pointing to tui.
CI detect-changes paths .github/workflows/pr-test-rust.yml	Removed tui/** from rust-ci paths and added Rust/CI-relevant globs: .cargo/**, ./.github/actions/setup-rust/**, scripts/ci_install_rust.sh, the workflow file itself, and specific WASM example hook paths.
Tooling: codespell config .pre-commit-config.yaml	Removed ratatui from the codespell hook -L exclusion list.
Docs: metrics endpoint wording docs/reference/metrics.md	Reworded /ws/metrics description to remove explicit TUI mention, describing usage by dashboards requiring live metric state.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• lightseekorg/smg#867: Added the terminal dashboard TUI crate that is now being removed.
• lightseekorg/smg#633: Modifies .github/workflows/pr-test-rust.yml detect-changes path-filter logic.
• lightseekorg/smg#678: Also adjusts CI detect-changes gating for downstream jobs.

Suggested labels

tests

Suggested reviewers

• CatherineSue
• slin1237

Poem

🐰
Hop, little crate, off the shelf I sweep,
Workspace lighter, the changes run deep.
CI paths trimmed, docs tidy and neat,
Pre-commit cleaned — a small, quiet feat.
Carrots for reviewers — swift paws, quick peep.

🚥 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 'chore(tui): remove smg-tui crate and related dependencies' directly and accurately describes the main change: removal of the TUI crate and its dependencies from the workspace.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/remove-tui

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[gemini-code-assist]

Code Review

This pull request completely removes the smg-tui (Shepherd Model Gateway Terminal User Interface) crate and its associated source code, configurations, and documentation references from the workspace. There are no review comments to address, so I have no further feedback to provide.

Important

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For more details on the timeline and next steps, please review the Help Documentation.

[claude]

Clean crate removal — all workspace, CI, docs, and codespell references properly cleaned up. No stale smg-tui/ratatui/crossterm references remain in the repo. LGTM.