Native folding matched comment node names case-sensitively and stripped delimiters character by character, so XML comments were skipped and the `<` in editor-fold tags was consumed. The frontend hardcoded its own comment prefixes. Both now strip the configured comment tokens from the language definitions, so region and editor-fold markers work in block comment languages (XML, HTML, Vue, SVG, CSS and others), and Navigate > Custom Folding lists them. Languages without a bundled grammar get a fallback for own-line markers. Rust and frontend tests share one fixture over 22 language configurations.
Fixes#583
Project rows only showed generic folder and filename icons, so JVM modules, packages and declarations looked alike.
Rows now show Maven and Gradle project and module icons, packages, Spring configuration and Boot application classes, runnable classes, test classes, Java and Kotlin declaration types, and generated, compiled and javadoc output folders. Editor tabs, Goto File and Recent Files use the same resolver. Types come from a bounded syntax parse of visible files, served locally and over remote RPC.
Spring stereotypes keep their ordinary type icons, and .class files stay binary.
Fixes#347