Root flake with two outputs: devShells.default (pinned 1.95.0
toolchain via rust-toolchain.toml + rust-overlay, plus cargo-sweep)
and packages.default (rustPlatform.buildRustPackage from the committed
Cargo.lock; doCheck=false). flake.lock pins nixpkgs nixos-26.05 /
rust-overlay / flake-utils. .envrc (use flake) for direnv parity.
Single source of toolchain for dev and the upcoming CI, so they can't
drift. Verified through the flake: nix build yields a working binary,
clippy clean, 2424 tests pass / 0 fail / 1 intentional ignored doctest.
First step toward requirements.md TT5 + D1/D2/D3.
First implementation milestone: Cargo project, dependencies,
and a minimal but functional TUI shell built on Ratatui +
Crossterm + Tokio in the Elm-style update/view pattern
(Candidate A from Phase 2/3 selection).
Includes:
- Three-region layout: items list (left), output + input + hint
(right), bottom status bar with mode-aware shortcuts.
- Two themes (light, dark) plus COLORFGBG auto-detect, per
NFR-7. CLI: --theme {light,dark}, --log-file <path>.
- Input modes per ADR-0003: simple (default), advanced, with
the `:` one-shot escape including immediate prompt reaction
("Advanced:" label, advanced border) and auto-inserted space
after a leading `:` in simple mode.
- App-level commands: `quit`/`q`, `mode simple`/`mode advanced`
(canonical list per ADR-0003 — remaining commands land in
later iterations).
- File logging via tracing, defaulting to ~/.rdbms-playground/
playground.log so the TUI is not corrupted by stdio.
Testing per ADR-0008:
- Tier 1: 29 unit tests covering input handling, mode switch,
one-shot escape, auto-space, output buffering, CLI parsing.
- Tier 2: 4 insta snapshots (default simple/advanced/light,
one-shot active) of TestBackend frames.
- Tier 3: 7 integration tests driving synthetic events through
App::update + render path.
All green: 36 tests, 0 failures, 0 skips. Clippy clean with
nursery lints enabled.
claude@clouddev1