refactor: move template/mkdir features to user-configured autocmds

- Remove auto-mkdir autocmd from init.lua (now user-configured)
- Remove template system entirely (now user-configured)
- Rename io.lua -> utils.lua
- Inline single-use functions (handle_web_link, handle_file_link, etc.)
- Remove security warnings for external files
- Remove unused config options: use_template, template, date_fmt
- Simplify utils.resolve() without wiki root validation
- Update all documentation examples
BREAKING CHANGE: Users must now add their own autocmds for:
- Auto-creating directories on save (BufWritePre)
- Applying templates to new files (BufNewFile)
See README.md for updated configuration examples.

1 files changed, 0 insertions, 7 deletions

diff --git a/lua/muwiki/config.lua b/lua/muwiki/config.lua
index 1e7e3de..1e04d4a 100644
--- a/lua/muwiki/config.lua
+++ b/lua/muwiki/config.lua
@@ -3,12 +3,6 @@ local M = {}
 M.options = {
   dirs = nil,
   index_file = 'index.md',
-  date_fmt = '%Y-%m-%d',
-  use_template = false,
-  template = [[
-title: ${title}
-date: ${date}
-]],
   text_extensions = { 'md', 'txt' },
   use_external_handlers = false,
   external_handlers = {
@@ -18,7 +12,6 @@ date: ${date}
       pattern = '.*',
     },
   },
-  create_missing_dirs = false,
 }
 
 local function dir_exists(path)