refactor: remove file token feature

Problem: The file metadata token (file:<path>:<line>) was implemented
but is no longer wanted.

Solution: Remove all traces — parse.lua token parsing, diff.lua
reconciliation, views.lua LineMeta field, buffer.lua virtual text and
PendingFile highlight, complete.lua omnifunc trigger, init.lua
goto_file/add_here functions and -file edit token, plugin keymaps
<Plug>(pending-goto-file) and <Plug>(pending-add-here), config.lua
goto_file keymap field, vimdoc FILE TOKEN section, and
spec/file_spec.lua.

lua/pending/buffer.lua

@@ -178,10 +178,6 @@ local function apply_extmarks(bufnr, line_meta)
       if m.due then
         table.insert(virt_parts, { icons.due .. ' ' .. m.due, due_hl })
       end
-      if m.file then
-        local display = m.file:match('([^/]+:%d+)$') or m.file
-        table.insert(virt_parts, { display, 'PendingFile' })
-      end
       if #virt_parts > 0 then
         for p = 1, #virt_parts - 1 do
           virt_parts[p][1] = virt_parts[p][1] .. '  '
@@ -238,7 +234,6 @@ local function setup_highlights()
   vim.api.nvim_set_hl(0, 'PendingPriority', { link = 'DiagnosticWarn', default = true })
   vim.api.nvim_set_hl(0, 'PendingRecur', { link = 'DiagnosticInfo', default = true })
   vim.api.nvim_set_hl(0, 'PendingFilter', { link = 'DiagnosticWarn', default = true })
-  vim.api.nvim_set_hl(0, 'PendingFile', { link = 'Directory', default = true })
 end
 
 local function snapshot_folds(bufnr)

lua/pending/complete.lua

@@ -124,7 +124,6 @@ function M.omnifunc(findstart, base)
       { vim.pesc(dk) .. ':([%S]*)$', dk },
       { 'cat:([%S]*)$', 'cat' },
       { vim.pesc(rk) .. ':([%S]*)$', rk },
-      { 'file:([%S]*)$', 'file' },
     }
 
     for _, check in ipairs(checks) do

lua/pending/config.lua

@@ -31,7 +31,6 @@
 ---@field prev_header? string|false
 ---@field next_task? string|false
 ---@field prev_task? string|false
----@field goto_file? string|false
 
 ---@class pending.Config
 ---@field data_path string

lua/pending/diff.lua

@@ -11,7 +11,6 @@ local parse = require('pending.parse')
 ---@field due? string
 ---@field rec? string
 ---@field rec_mode? string
----@field file? string
 ---@field lnum integer
 
 ---@class pending.diff
@@ -57,7 +56,6 @@ function M.parse_buffer(lines)
           due = metadata.due,
           rec = metadata.rec,
           rec_mode = metadata.rec_mode,
-          file = metadata.file,
           lnum = i,
         })
       end
@@ -135,19 +133,6 @@ function M.apply(lines, s, hidden_ids)
           task.recur_mode = entry.rec_mode
           changed = true
         end
-        local old_file = (task._extra and task._extra.file) or nil
-        if entry.file ~= old_file then
-          task._extra = task._extra or {}
-          if entry.file then
-            task._extra.file = entry.file
-          else
-            task._extra.file = nil
-            if next(task._extra) == nil then
-              task._extra = nil
-            end
-          end
-          changed = true
-        end
         if entry.status and task.status ~= entry.status then
           task.status = entry.status
           if entry.status == 'done' then

lua/pending/init.lua

@@ -324,15 +324,6 @@ function M._setup_buf_mappings(bufnr)
     end
   end
 
-  local goto_key = km.goto_file
-  if goto_key == nil then
-    goto_key = 'gf'
-  end
-  if goto_key and goto_key ~= false then
-    vim.keymap.set('n', goto_key --[[@as string]], function()
-      M.goto_file()
-    end, opts)
-  end
 end
 
 ---@param bufnr integer
@@ -664,10 +655,6 @@ local function parse_edit_token(token)
   if token == '-rec' or token == '-' .. rk then
     return 'recur', vim.NIL, nil
   end
-  if token == '-file' then
-    return 'file_clear', true, nil
-  end
-
   local due_val = token:match('^' .. vim.pesc(dk) .. ':(.+)$')
   if due_val then
     local resolved = parse.resolve_date(due_val)
@@ -711,11 +698,10 @@ local function parse_edit_token(token)
       .. dk
       .. ':<date>, cat:<name>, '
       .. rk
-      .. ':<pattern>, file:<path>:<line>, +!, -!, -'
+      .. ':<pattern>, +!, -!, -'
       .. dk
       .. ', -cat, -'
       .. rk
-      .. ', -file'
 end
 
 ---@param id_str string
@@ -795,9 +781,6 @@ function M.edit(id_str, rest)
     elseif field == 'priority' then
       updates.priority = value
       table.insert(feedback, value == 1 and 'priority added' or 'priority removed')
-    elseif field == 'file_clear' then
-      updates.file_clear = true
-      table.insert(feedback, 'file reference removed')
     end
   end
 
@@ -810,17 +793,6 @@ function M.edit(id_str, rest)
 
   s:update(id, updates)
 
-  if updates.file_clear then
-    local t = s:get(id)
-    if t and t._extra then
-      t._extra.file = nil
-      if next(t._extra) == nil then
-        t._extra = nil
-      end
-      t.modified = os.date('!%Y-%m-%dT%H:%M:%SZ') --[[@as string]]
-    end
-  end
-
   s:save()
 
   local bufnr = buffer.bufnr()
@@ -831,91 +803,6 @@ function M.edit(id_str, rest)
   vim.notify('Task #' .. id .. ' updated: ' .. table.concat(feedback, ', '))
 end
 
----@return nil
-function M.goto_file()
-  local bufnr = vim.api.nvim_get_current_buf()
-  if vim.bo[bufnr].filetype ~= 'pending' then
-    return
-  end
-  local lnum = vim.api.nvim_win_get_cursor(0)[1]
-  local meta = buffer.meta()
-  local m = meta and meta[lnum]
-  if not m or m.type ~= 'task' then
-    vim.notify('No task on this line', vim.log.levels.WARN)
-    return
-  end
-  local task = get_store():get(m.id)
-  if not task or not task._extra or not task._extra.file then
-    vim.notify('No file attached to this task', vim.log.levels.WARN)
-    return
-  end
-  local file_spec = task._extra.file
-  local rel_path, line_str = file_spec:match('^(.+):(%d+)$')
-  if not rel_path then
-    vim.notify('Invalid file spec: ' .. file_spec, vim.log.levels.ERROR)
-    return
-  end
-  local data_dir = vim.fn.fnamemodify(get_store().path, ':h')
-  local abs_path = data_dir .. '/' .. rel_path
-  if vim.fn.filereadable(abs_path) == 0 then
-    vim.notify('File not found: ' .. abs_path, vim.log.levels.ERROR)
-    return
-  end
-  vim.cmd.edit(abs_path)
-  local lnum_target = tonumber(line_str) or 1
-  vim.api.nvim_win_set_cursor(0, { lnum_target, 0 })
-end
-
----@return nil
-function M.add_here()
-  local cur_bufnr = vim.api.nvim_get_current_buf()
-  if vim.bo[cur_bufnr].filetype == 'pending' then
-    vim.notify('Already in pending buffer', vim.log.levels.WARN)
-    return
-  end
-  local cur_file = vim.api.nvim_buf_get_name(cur_bufnr)
-  if cur_file == '' or vim.fn.filereadable(cur_file) == 0 then
-    vim.notify('Not editing a readable file', vim.log.levels.ERROR)
-    return
-  end
-  local cur_lnum = vim.api.nvim_win_get_cursor(0)[1]
-  local s = get_store()
-  local data_dir = vim.fn.fnamemodify(s.path, ':h')
-  local abs_file = vim.fn.fnamemodify(cur_file, ':p')
-  local rel_file
-  if abs_file:sub(1, #data_dir + 1) == data_dir .. '/' then
-    rel_file = abs_file:sub(#data_dir + 2)
-  else
-    rel_file = abs_file
-  end
-  local file_spec = rel_file .. ':' .. cur_lnum
-  s:load()
-  local tasks = s:active_tasks()
-  if #tasks == 0 then
-    vim.notify('No active tasks', vim.log.levels.INFO)
-    return
-  end
-  local items = {}
-  for _, task in ipairs(tasks) do
-    table.insert(items, task)
-  end
-  vim.ui.select(items, {
-    prompt = 'Attach file to task:',
-    format_item = function(task)
-      return '[' .. task.id .. '] ' .. task.description
-    end,
-  }, function(task)
-    if not task then
-      return
-    end
-    task._extra = task._extra or {}
-    task._extra.file = file_spec
-    task.modified = os.date('!%Y-%m-%dT%H:%M:%SZ') --[[@as string]]
-    s:save()
-    vim.notify('Attached ' .. file_spec .. ' to task ' .. task.id)
-  end)
-end
-
 ---@return nil
 function M.init()
   local path = vim.fn.getcwd() .. '/.pending.json'

lua/pending/parse.lua

@@ -416,7 +416,7 @@ end
 
 ---@param text string
 ---@return string description
----@return { due?: string, cat?: string, rec?: string, rec_mode?: 'scheduled'|'completion', file?: string? } metadata
+---@return { due?: string, cat?: string, rec?: string, rec_mode?: 'scheduled'|'completion' } metadata
 function M.body(text)
   local tokens = {}
   for token in text:gmatch('%S+') do
@@ -481,18 +481,7 @@ function M.body(text)
             metadata.rec = raw_spec
             i = i - 1
           else
-            local file_path_val, file_line_val = token:match('^file:(.+):(%d+)$')
-            if file_path_val and file_line_val then
-              if metadata.file then
-                break
-              end
-              metadata.file = file_path_val .. ':' .. file_line_val
-              i = i - 1
-            elseif token:match('^file:') then
-              break
-            else
-              break
-            end
+            break
           end
         end
       end
@@ -510,7 +499,7 @@ end
 
 ---@param text string
 ---@return string description
----@return { due?: string, cat?: string, rec?: string, rec_mode?: 'scheduled'|'completion', file?: string? } metadata
+---@return { due?: string, cat?: string, rec?: string, rec_mode?: 'scheduled'|'completion' } metadata
 function M.command_add(text)
   local cat_prefix = text:match('^(%S.-):%s')
   if cat_prefix then

lua/pending/views.lua

@@ -12,7 +12,6 @@ local parse = require('pending.parse')
 ---@field show_category? boolean
 ---@field priority? integer
 ---@field recur? string
----@field file? string
 
 ---@class pending.views
 local M = {}
@@ -160,7 +159,6 @@ function M.category_view(tasks)
         overdue = task.status == 'pending' and task.due ~= nil and parse.is_overdue(task.due)
           or nil,
         recur = task.recur,
-        file = task._extra and task._extra.file or nil,
       })
     end
   end
@@ -212,7 +210,6 @@ function M.priority_view(tasks)
       overdue = task.status == 'pending' and task.due ~= nil and parse.is_overdue(task.due) or nil,
       show_category = true,
       recur = task.recur,
-      file = task._extra and task._extra.file or nil,
     })
   end