claude@clouddev1
65eab71439
Computing actual WCAG ratios surfaced two real accessibility defects in the shipped v0.2.0 light theme: tok_string (4.42:1) and tok_flag (3.15:1) fell below the 4.5:1 the scheme promises for normal text (NFR-5). Darken both to clear it with headroom (5.18 / 5.98). Also widen two dark-theme token pairs that were perceptually close despite distinct hex (hard to separate on good screens): tok_type and tok_function move from ΔE2000 ~14 to ~18-19 vs their neighbours. Add four gated tests in theme.rs: - all_text_colours_meet_wcag_aa_contrast: every text fg >= 4.5:1 on bg, both themes (the regression gate that would have caught this). - advanced_mode_border_meets_ui_contrast: 3:1 for the mode-alert border; plain border is decorative chrome, exempt. - delta_e_2000_matches_reference_vectors: validates the CIEDE2000 metric against Sharma et al. reference data. - syntax_token_colours_are_perceptually_distinct: ΔE2000 >= 15 for every token-class pair, both themes. Persist scripts/palette-preview.py: the true-colour swatch + contrast + ΔE2000 audit tool used to drive these changes (reads the live palette from theme.rs), for future palette work. Tests: 2513 passed / 0 failed / 1 ignored (was 2509; +4). clippy and fmt clean. Relates to NFR-5/NFR-7 (ADR-0057).
rdbms-playground
A cross-platform terminal app for learning relational database concepts — tables, columns, primary and foreign keys, relationships, indexes, queries, and query plans — in a safe sandbox.
It's a teaching tool, not a database administration tool. It meets beginners with guided, keyword-based commands (simple mode) and grows with them to raw SQL (advanced mode), so the same playground works from "what is a primary key?" through to writing real queries and reading their execution plans.
Website & documentation: https://relplay.org
Install
One line (Linux / macOS)
curl -fsSL https://git.lazyeval.net/oli/rdbms-playground/raw/branch/main/scripts/install.sh | sh
Detects your OS and CPU, downloads the matching release binary, verifies
its SHA-256 checksum, and installs it to ~/.local/bin. Set
RDBMS_INSTALL_DIR to install elsewhere, or RDBMS_VERSION=vX.Y.Z to
pin a version. (Prefer to read before you run? The script lives at
scripts/install.sh.)
One line (Windows, PowerShell)
irm https://git.lazyeval.net/oli/rdbms-playground/raw/branch/main/scripts/install.ps1 | iex
Downloads the matching .exe, verifies its checksum, installs to
%LOCALAPPDATA%\Programs\rdbms-playground, and adds it to your user
PATH. Or use a package manager (Scoop / winget) once those land.
With cargo binstall
If you have cargo-binstall
(install it first — it is not part of cargo itself):
cargo binstall rdbms-playground
From source
cargo install rdbms-playground # from crates.io
# or, from a clone:
cargo build --release # binary at target/release/rdbms-playground
Prebuilt binaries
Every release publishes static Linux, standalone Windows, and macOS
binaries (x86_64 and aarch64) with .sha256 checksums on the
releases page.
Windows users can also use the binary directly (package-manager support
is planned).
A quick taste
create table Customers with pk id(serial)
add column Customers: name (text)
add column Customers: email (text)
insert into Customers values ('Ann', 'ann@example.io')
show data Customers
Press F1 while typing for a contextual hint about the command you're
building, or type help for the full command list. Switch to raw SQL
with mode advanced (or prefix a single line with :).
Project status
Approaching its first public release. See the website for current features; installation via package managers (Homebrew, Scoop, winget) is on the roadmap.
License
Dual-licensed under either of
- MIT license (LICENSE-MIT)
- Apache License 2.0 (LICENSE-APACHE)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual-licensed as above, without any additional terms or conditions. See CONTRIBUTING.md.