Pre-evaluate inline expressions, add format_inline_(), fix print.ab

- All bare {variable}/{expression} in message_()/warning_()/stop_() calls
  are now pre-evaluated via paste0(), so users without cli/glue never see
  raw template syntax (mo_source.R, first_isolate.R, join_microorganisms.R,
  antibiogram.R, atc_online.R)
- Add format_inline_() helper: formats a cli-markup string and returns it
  (not emits it), using cli::format_inline() when available and cli_to_plain()
  otherwise
- Rewrite .onAttach to use format_inline_() for all packageStartupMessage
  calls; also adds {.topic} link and {.code} markup for option names
- print.ab: pre-evaluate function_name via paste0 (no .envir needed),
  apply highlight_code() to each example bullet for R syntax highlighting
- join_microorganisms: pre-evaluate {type} and {nrow(...)} expressions

https://claude.ai/code/session_01XHWLohiSTdZvCutwD7ag2b

R/aa_helper_functions.R

@@ -390,6 +390,19 @@ highlight_code <- function(code) {
   }
 }
 
+# Format a cli-markup string for output, with a plain-text fallback when cli is
+# unavailable. Unlike message_() / warning_() / stop_(), this function returns
+# the formatted string rather than emitting it, so it can be passed to any
+# output function (e.g. packageStartupMessage()).
+format_inline_ <- function(...) {
+  msg <- paste0(c(...), collapse = "")
+  if (pkg_is_available("cli", min_version = "3.0.0")) {
+    cli::format_inline(msg)
+  } else {
+    cli_to_plain(msg, envir = parent.frame())
+  }
+}
+
 import_fn <- function(name, pkg, error_on_fail = TRUE) {
   if (isTRUE(error_on_fail)) {
     stop_ifnot_installed(pkg)