Naming, layout and comments: descriptive full-word names, one item per line in wrapped calls and literals, and doc comments on exported names

Short and single-letter names in application code become full words (tests
keep theirs). Wrapped calls, signatures and composite literals put one item
per line, and one-line function bodies are expanded. Exported names and
groups of constants get doc comments, and comments refer to the renamed
identifiers.

cmd/jobsearch/main_test.go

@@ -37,11 +37,16 @@ func TestVersion(t *testing.T) {
 // flags and hooks, and the subcommand beneath it.
 func TestRootRunsCommands(t *testing.T) {
 	cmdtest.Setup(t, "logging:\n  level: info\n")
-	cmdtest.Contains(t, cmdtest.MustRun(t, newRootCmd, "config", "get", "logging.level"),
-		"info <string>")
-	cmdtest.Contains(t,
+	cmdtest.Contains(
+		t,
+		cmdtest.MustRun(t, newRootCmd, "config", "get", "logging.level"),
+		"info <string>",
+	)
+	cmdtest.Contains(
+		t,
 		cmdtest.MustRun(t, newRootCmd, "config", "get", "logging.level", "--debug"),
-		"debug <string>")
+		"debug <string>",
+	)
 }
 
 func TestUnknownCommand(t *testing.T) {