# Incident Ledger

One appended line per real incident. Never rewritten.

| Date       | Area                            | Mechanism                                                                                                                                                                        | Root cause                                                                                                                                                                                                                                                                 | Remedy                                                                                                                                                                                                                                                      | Tier |
| :--------- | :------------------------------ | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :--- |
| 2026-10-09 | Products / Niederspannungskabel | Five aluminium low-voltage products (NAYY, NAYCWY, NAY2Y, NA2XY, NA2X2Y) silently invisible on the site: dropped from category listing, 404 on detail pages, absent from sitemap | Commit 76cbdaa3 (2026-08-07, release 2.3.33 "NA Kabel Leiterklassen Fix") flattened frontmatter indentation of exactly these five files while removing RE/SE conductor shapes; broken YAML made the product loader return null and the site dropped them without any error | Restored valid frontmatter from 76cbdaa3~1 (content verified identical modulo indentation, whitespace-only diff), kept current markdown body incl. the RE/SE fix; regression spec tests/products-content.test.ts guards parseability and catalog visibility | M    |