fixups after babashka migration and new parsing template

[danielhvs]

Issues

1. Using the new template with the {{x}} format causes parsing strings to erroneous getting replaced by null instead of "" when "absent"
2. Java exception thrown while trying to parse java.nio.file.Path as a string in triangulum.utils/remove-end fn

Fixes

1. Coerce nils to ""
2. transform the Path into a String before calling remove-end

[danielhvs]

Identified the problem by using the command below:

~/sig/pyrolyzer-8894$ clojure -M:systemd enable -r pyrolyzer-8894

[rjsheperd]

Good catch, @danielhvs !

src/triangulum/utils.clj

L59-60: Please format inside of let block to create two columns.

Should look like:

(let [handlebar #"\{\{([^\}]+)\}\}"
      fmt-keys  (re-seq handlebar fmt-str)
      m         (update-vals m (fnil identity ""))
      values    (map #(m (-> % (second) (snake->kebab) (keyword))) fmt-keys)]