chore(release): v0.5.1

CHANGELOG.md

@@ -7,6 +7,22 @@ change type. Preview the next one with `ludic dev release --dry-run`.
 A released section may carry a hand-written summary paragraph above its groups
 (v0.2.0 has one); the generated bullets below it are not edited by hand.
 
+## v0.5.1 — 2026-09-05
+
+### Fixes
+
+- `ludic version` reports the version of the toolchain it belongs to. It looked for
+  `bin/ludicc` and `VERSION` beside the *current* directory, so it answered
+  "(version unknown)" from a project — which is the only place a user ever runs it.
+  It now resolves the compiler through the install root, like every other command.
+
+  `install.sh` also now puts `ludic` on `PATH` for every shell, not just the one
+  `$SHELL` names. The PATH edit lives in one file (`~/.ludic/env`) that each
+  profile sources, and the profiles are chosen to cover what people actually open:
+  `~/.profile` for sh and login bash, `~/.zshenv` because zsh never reads
+  `~/.profile`, `~/.bashrc`/`~/.bash_profile` when they already exist, and fish's
+  config when fish is installed. Re-running the installer does not add a second
+  copy, and `--no-modify-path` still touches nothing.
 ## v0.5.0 — 2026-09-05
 
 ### Features