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/atc_online.R

@@ -180,7 +180,7 @@ atc_online_property <- function(atc_code,
       colnames(out) <- gsub("^atc.*", "atc", tolower(colnames(out)))
 
       if (length(out) == 0) {
-        message_("in {.help [{.fun atc_online_property}](AMR::atc_online_property)}: no properties found for ATC ", atc_code[i], ". Please check {.href {atc_url} this WHOCC webpage}.")
+        message_("in {.help [{.fun atc_online_property}](AMR::atc_online_property)}: no properties found for ATC ", atc_code[i], ". Please check {.href ", atc_url, " this WHOCC webpage}.")
         returnvalue[i] <- NA
         next
       }