Shameless plug: This sounds similar to my own werc project: http://werc.cat-v.org http://werc.cat-v.org which uses the file system to store plain markdown files

Shameless plug: This sounds similar to my own werc project: http://werc.cat-v.org http://werc.cat-v.org which uses the file system to store plain markdown files which you can edit in whatever editor you like.