Function NormalizeTag

internal/flowdb/db.go:958–960

---------- task tag queries ---------- NormalizeTag canonicalizes a tag for storage and comparison: trim whitespace, lowercase. Returns "" for input that contains nothing after trimming — callers should treat "" as invalid.

(s string)

// whitespace, lowercase. Returns "" for input that contains nothing
// after trimming — callers should treat "" as invalid.
func NormalizeTag(s string) string {
	return strings.ToLower(strings.TrimSpace(s))
}

// AddTaskTag attaches a tag to a task. Idempotent: re-adding an existing
// (task_slug, tag) pair is a no-op via INSERT OR IGNORE.