task_local context over context objects

- interner impls logically separate from API in orchid-base (default host interner still in base for testing)
- error reporting, logging, and a variety of other features passed down via context in extension, not yet in host to maintain library-ish profile, should consider options
- no global spawn mechanic, the host has a spawn function but extensions only get a stash for enqueuing async work in sync callbacks which is then explicitly, manually, and with strict order popped and awaited
- still deadlocks nondeterministically for some ungodly reason

orchid-std/src/macros/mactree.rs

@@ -8,7 +8,7 @@ use hashbrown::HashSet;
 use orchid_api_derive::Coding;
 use orchid_base::error::OrcErrv;
 use orchid_base::format::{FmtCtx, FmtUnit, Format, Variants};
-use orchid_base::interner::Tok;
+use orchid_base::interner::IStr;
 use orchid_base::location::Pos;
 use orchid_base::name::Sym;
 use orchid_base::tl_cache;
@@ -205,7 +205,7 @@ pub async fn mtreev_fmt<'b>(
 
 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 pub struct Ph {
-	pub name: Tok<String>,
+	pub name: IStr,
 	pub kind: PhKind,
 }
 impl Display for Ph {