docs: add comments to main recipes

justfile

@@ -6,7 +6,7 @@ recent: select-download-recent convert refile
 full: select-download-full convert refile
   @tree M4B/
 
-doctor:
+doctor: # Check all required executables are found
   @echo "Verify required executables are on the path:"
   just _doc_require_exec_all audible just fzf jq ffmpeg refile-m4b
 
@@ -22,13 +22,13 @@ _doc_require_exec exec:
     echo "-   OKAY  : {{ exec }} => ${EXEC}"
   fi
 
-select-download-recent:
+select-download-recent: # Select titles from those added in the latest library, and download them
   just select-download library-recent.txt
 
-select-download-full:
+select-download-full: # Select titles from the full latest library, and download them
   just select-download $(just latest-library)
   
-select-download library:
+select-download library: # Select titles from the {{ library }}, and download them
   #!/usr/bin/env bash
   SELECTION=$(cat {{library}} | sort -k 2 | fzf -e -m)
   ASINS=""
@@ -40,7 +40,7 @@ select-download library:
   done <<< $SELECTION
   just _download-asin $ASINS
 
-fetch-library:
+fetch-library: # Download the latest version of the Library
   #!/usr/bin/env bash
   set -e
   PREVIOUS=$(just latest-library)
@@ -64,14 +64,14 @@ _download-asin *asins:
   cd TEMP && audible download --aax-fallback {{ asins }}
   just post-download
 
-post-download:
+post-download: # Move successfully downloaded aax, aaxc and voucher sinto AAX or AAXC
   just _require_dir AAX AAXC
   just _move AAX/ TEMP/*.aax
   just _move AAXC/ TEMP/*.aaxc TEMP/*.voucher
 
 convert: convert-aax convert-aaxc
 
-convert-aax:
+convert-aax: # Convert all the AAX files to M4B
   #!/usr/bin/env bash
   just _require_dir M4B
   if [ $(fd . AAX | wc -l) -gt 0 ]
@@ -91,7 +91,7 @@ convert-aax:
     echo No AAX to convert
   fi
 
-convert-aaxc:
+convert-aaxc: # Convert all the AAXC files to M4B
   #!/usr/bin/env bash
   just _require_dir M4B
   if [ $(fd . AAXC | wc -l) -gt 0 ]
@@ -120,10 +120,10 @@ _convert-one-aaxc aaxc_file voucher_file m4b_file:
     {{ m4b_file }} && \
   rm {{ aaxc_file }} {{ voucher_file }}
 
-refile:
+refile: # Rename and move files in M4B based on their metadata
   refile-m4b M4B
 
-archive:
+archive: # Move the contents of M4B to the archive
   #!/usr/bin/env bash
   if [ -d M4B ] && [ -n "${AUDIOBOOK_ARCHIVE}" ] && [ -d "${AUDIOBOOK_ARCHIVE}" ];
   then
@@ -139,7 +139,7 @@ archive:
     exit 1
   fi
 
-clean:
+clean: # Delete the directories TEMP, AAX, AAXC and M4B, including all files within
   for target in TEMP AAX AAXC M4B ; do just _clean $target ; done
 
 _clean target: