feat(view): DVIEW twists the view about its line of sight

DVIEW (alias DV) offers TWist and Undo. TWist rolls the active view
or viewport camera to the typed angle; Undo steps back through the
twists made in the session. The new alias reaches existing profiles
through the alias migration table.

Refs #638

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/alias.rs

@@ -80,7 +80,7 @@ const WEB_ALIAS_KEY: &str = "opencadstudio.aliases";
 /// migrated forward (see `introduced_at` / `migrate_aliases`). Version 1 shipped
 /// the pre-REDRAW table; version 2 introduced the REDRAW-family aliases; version 3
 /// introduced HB (HATCHTOBACK); version 4 introduced ER (EXTERNALREFERENCES).
-const DEFAULT_ALIASES_VERSION: u32 = 6;
+const DEFAULT_ALIASES_VERSION: u32 = 7;
 
 #[cfg(target_arch = "wasm32")]
 const WEB_ALIAS_VERSION_KEY: &str = "opencadstudio.aliases.version";
@@ -101,6 +101,7 @@ fn introduced_at(version: u32) -> &'static [(&'static str, &'static str)] {
         4 => &[("ER", "EXTERNALREFERENCES")],
         5 => &[("-ATT", "-ATTDEF")],
         6 => &[("VV", "QLAYER")],
+        7 => &[("DV", "DVIEW")],
         _ => &[],
     }
 }