fix: capture inline description for keywords like Host and User

Problem: keywords with description text on the same line (e.g.
"Host    Restricts the following...") had their first line of
documentation silently dropped because the parser started collecting
at the line after the keyword.

Solution: extract trailing text from the keyword line and prepend it
to the description block.

lua/blink-cmp-ssh.lua

@@ -96,7 +96,8 @@ local function parse_keywords(stdout)
   for i, line in ipairs(lines) do
     local kw = line:match('^       (%u%a+)%s*$') or line:match('^       (%u%a+)   ')
     if kw then
-      defs[#defs + 1] = { line = i, keyword = kw }
+      local inline = line:match('^       %u%a+%s%s%s+(.+)')
+      defs[#defs + 1] = { line = i, keyword = kw, inline = inline }
     end
   end
 
@@ -105,6 +106,9 @@ local function parse_keywords(stdout)
     local block_end = (defs[idx + 1] and defs[idx + 1].line or #lines) - 1
 
     local desc_lines = {}
+    if def.inline then
+      desc_lines[#desc_lines + 1] = '               ' .. def.inline
+    end
     for k = def.line + 1, block_end do
       desc_lines[#desc_lines + 1] = lines[k]
     end

spec/ssh_spec.lua

@@ -146,6 +146,21 @@ describe('blink-cmp-ssh', function()
       assert.is_truthy(strict.documentation.value:find('known_hosts'))
     end)
 
+    it('includes inline description for keywords with text on the same line', function()
+      restores[#restores + 1] = mock_system()
+      local source = require('blink-cmp-ssh').new()
+      local items
+      source:get_completions({ line = '', cursor = { 1, 0 } }, function(response)
+        items = response.items
+      end)
+      local host = vim.iter(items):find(function(item)
+        return item.label == 'Host'
+      end)
+      assert.is_not_nil(host)
+      assert.is_not_nil(host.documentation)
+      assert.is_truthy(host.documentation.value:find('Restricts'))
+    end)
+
     it('returns enum values after a known keyword', function()
       restores[#restores + 1] = mock_system()
       local source = require('blink-cmp-ssh').new()