chore(release): v0.6.1

CHANGELOG.md

@@ -7,6 +7,32 @@ 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.
 
+## v0.6.1 — 2026-09-05
+
+### Fixes
+
+- **`ludic new` scaffolded a project that would not compile.** The project name went
+  straight into the `program <Name>` identifier, so `ludic new my-game` wrote
+  `program My-Game` — a subtraction — and the first `ludic run` failed with
+  `expected '{', got '-'`. A name is now turned into a valid identifier
+  (`my-game` → `MyGame`, `2048` → `Game2048`), and a name that cannot be a
+  directory or a package is refused with the rule rather than mangled.
+
+  Found while auditing every command's flags and arguments, along with:
+
+  - **Unknown options are errors.** `ludic build --headles` silently built a
+    windowed binary; `ludic build -o` with no path silently ignored it. Both now
+    say what is wrong and exit non-zero.
+  - **`ludic fmt` formats in place**, as its help always claimed — it was printing
+    the file to stdout and changing nothing. `ludic fmt --check` reports drift
+    without writing, for a hook or CI.
+  - **`ludic test nosuch.ludic`** says the file does not exist instead of passing it
+    to the compiler.
+  - **`ludic build-lib`** reported failures as a shell syntax error (an
+    interpolation written in a non-interpolating string), and its no-argument
+    auto-detection picked up `package.lock.ludic` as a module to compile.
+  - Error messages that still began with `x:` — the CLI's old name — now say
+    `ludic:`.
 ## v0.6.0 — 2026-09-05
 
 ### Refactoring