fix: adjust Justfile and typst templates for calepin 0.0.61

Assisted-by: Delta:zai-glm-5.3

Justfile

@@ -25,17 +25,17 @@ tools:
 
 # Build the site
 build:
-	PATH="$$PWD/tools:$$PATH" calepin build
+	PATH="$PWD/tools:$PATH" calepin compile site public
 
 # Preview the site locally
 preview:
-	PATH="$$PWD/tools:$$PATH" calepin serve
+	PATH="$PWD/tools:$PATH" calepin serve public
 
 # Watch for changes and preview
 watch:
-	PATH="$$PWD/tools:$$PATH" calepin watch --serve
+	PATH="$PWD/tools:$PATH" calepin watch site public --serve
 
 # Clean the output directory
 clean:
-	rm -rf public tools
+	rm -rf public