chore: import upstream snapshot with attribution

apps/sim/lib/table/column-naming.ts

@@ -0,0 +1,56 @@
+/**
+ * Shared column-naming helpers used by every path that auto-derives a
+ * column name + type from a workflow block output: the table column-sidebar
+ * UI, and the Copilot/Mothership `add_workflow_group` op. Keeping one
+ * implementation means the AI's auto-named columns match what a user would
+ * get from the sidebar.
+ */
+
+import type { ColumnDefinition } from '@/lib/table/types'
+
+/**
+ * Slugifies a string into a `NAME_PATTERN`-safe column name. Lowercase,
+ * non-alphanum runs collapse to `_`, leading digits get a `c_` prefix, empty
+ * results fall back to `output`.
+ */
+export function slugifyColumnName(value: string): string {
+  let slug = value
+    .toLowerCase()
+    .replace(/[^a-z0-9_]+/g, '_')
+    .replace(/^_+|_+$/g, '')
+  if (!slug) slug = 'output'
+  if (/^[0-9]/.test(slug)) slug = `c_${slug}`
+  return slug
+}
+
+/**
+ * Pick a non-colliding column name for a block-output `path`. Uses the bare
+ * path slug; on collision, appends `_0`, `_1`, …
+ */
+export function deriveOutputColumnName(path: string, taken: Set<string>): string {
+  const base = slugifyColumnName(path)
+  if (!taken.has(base)) return base
+  for (let i = 0; i < 1000; i++) {
+    const candidate = `${base}_${i}`
+    if (!taken.has(candidate)) return candidate
+  }
+  return `${base}_${Date.now()}`
+}
+
+/**
+ * Map a block-output leaf type onto a table column type. Block schemas use
+ * a superset (`array`, `object`, etc.); anything outside the column-type
+ * union falls back to `json`, the most permissive shape that still validates.
+ */
+export function columnTypeForLeaf(leafType: string | undefined): ColumnDefinition['type'] {
+  switch (leafType) {
+    case 'string':
+    case 'number':
+    case 'boolean':
+    case 'date':
+    case 'json':
+      return leafType
+    default:
+      return 'json'
+  }
+}