Abbrev stage should respect language detection from Cortex

[liwarf]

The Abbrev stage abbreviates natural language text ("information" -> "info", "configuration" -> "config"). But when Cortex detects the content as code, Abbrev should not run — abbreviating variable names like "configuration_manager" to "config_manager" changes semantics.

Currently Abbrev checks content length but not the Cortex content type hint.