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rdbms-playground/CHANGELOG.md
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claude@clouddev1 208da81108 feat(hint): clause-concept hints layered on F1 (issue #37) 
Add a hint.concept.* tier-3 layer surfaced when the cursor sits inside a
recognized clause (referential actions, 1:n/m:n cardinality, primary key,
unique, check, foreign key), layered beneath the per-form block. New
Node::Concept grammar wrapper records clause byte-spans; concept_topic_at_cursor
resolves the innermost containing span. Examples are mode-keyed so they stay
syntax-correct in both simple and advanced mode. Draft ADR (number at merge).
2026-06-23 13:24:54 +00:00

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Changelog

All notable, user-facing changes to RDBMS Playground are documented here.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Added

  • Pressing F1 while the cursor sits inside a clause now adds a short "About this clause" explanation beneath the command hint — covering referential actions (on delete/on update), one-to-many and many-to-many relationships, primary keys, unique and check constraints, and foreign keys. The example shown matches whichever mode you're in.
  • help now covers the advanced-mode SQL commands: help select, help with, and the SQL forms of insert / update / delete / explain show their own syntax, and the full command list is grouped into "Simple-mode commands" and "Advanced-mode (SQL) commands" sections.
  • Install via Scoop, Homebrew, and winget in addition to the existing channels.
  • Tier-4 end-to-end test suite that exercises the real application in a terminal (cold launch, save/reopen, export/import, undo) — guards against regressions the unit and render tests can't see.
  • Automated colour-accessibility checks: every theme now has its foreground/background contrast and its syntax-colour distinctness verified on each build.

Removed

  • The blob column type. It could be declared but never given a value (there was no way to type a binary value in either mode), so it was a dead end with nothing to teach. The vocabulary is now nine types. Existing projects that used a blob column still open — the column is converted to text on first load (a backup of the original project file is kept alongside it).

Fixed

  • Pasting or scripting several commands at once no longer occasionally rejects a valid simple-mode insert — submitted right after adding a column — as though it were advanced-mode SQL.
  • Light theme: string-literal and flag colours in syntax highlighting were below the WCAG-AA contrast bar; both are now legible. Two dark-theme token colours that were hard to tell apart have been separated.
  • Windows install.ps1 now works on the in-box Windows PowerShell 5.1 and updates PATH for the current session.

0.2.0 - 2026-06-17

Added

  • Version surfaces: a --version / -V command-line flag and an in-app version command, both reporting the build's exact version.
  • Installation options: publish to crates.io (cargo install rdbms-playground), cargo binstall support, a one-line curl | sh installer, and a Windows install.ps1 — so you no longer have to hand-pick a release asset.
  • Documentation & landing site at https://relplay.org — the canonical user guide plus screencast demos.
  • A demonstration-mode key alias (Ctrl-G acting as F1) so screencasts can show the in-app help/hint key.

Fixed

  • Corrected several errors in the contextual-hint help text.

0.1.0 - 2026-06-15

First public release: the cross-platform terminal sandbox for learning relational-database concepts — tables, keys, relationships, indexes, queries and query plans — in a guided simple mode or a full advanced (SQL) mode, with projects, undo, and export/import.

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