Single source of truth in decnet_web/src/realism/labels.ts: maps each
ContentClass enum value to a friendly display name ("Note",
"Cron Log", "Canary · AWS Credentials", …). Used by RealismConfig
(weight tables + class filter dropdown) and SyntheticFiles (table row
+ drawer detail).
Canary classes get a subtle amber accent so the dashboard's read of
"this row is callback-bearing" doesn't depend on prefix-spotting in
mono text. Raw enum value still appears in dim mono next to the label
so an operator copy/pasting from logs or grepping the codebase still
finds it.
No backend change: the wire shape is still the snake_case enum; the
beautification is render-time only.