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/rule/matcher.rs

@@ -2,8 +2,8 @@ use std::fmt;
 use std::rc::Rc;
 
 use orchid_base::error::OrcRes;
+use orchid_base::interner::is;
 use orchid_base::name::Sym;
-use orchid_extension::context::i;
 
 use super::any_match::any_match;
 use super::build::mk_any;
@@ -24,12 +24,12 @@ impl Matcher {
 		let first = pattern.first().expect("Empty pattern is not allowed");
 		if vec_attrs(first).is_none() {
 			let pos = first.pos();
-			pattern.insert(0, MacTok::Ph(Ph { name: i().i("::before").await, kind }).at(pos));
+			pattern.insert(0, MacTok::Ph(Ph { name: is("::before").await, kind }).at(pos));
 		}
 		let last = pattern.last().expect("first returned Some above");
 		if vec_attrs(last).is_none() {
 			let pos = last.pos();
-			pattern.insert(0, MacTok::Ph(Ph { name: i().i("::after").await, kind }).at(pos));
+			pattern.insert(0, MacTok::Ph(Ph { name: is("::after").await, kind }).at(pos));
 		}
 		Ok(Matcher { inner: mk_any(&pattern).await? })
 	}
@@ -42,7 +42,7 @@ impl Matcher {
 	) -> Option<(&'a [MacTree], MatchState<'a>, &'a [MacTree])> {
 		let mut result = any_match(&self.inner, seq, &save_loc)?;
 		async fn remove_frame<'a>(result: &mut MatchState<'a>, key: &str) -> &'a [MacTree] {
-			match result.remove(i().i(key).await) {
+			match result.remove(is(key).await) {
 				Some(StateEntry::Scalar(_)) => panic!("{key} is defined in the constructor as a Vec"),
 				Some(StateEntry::Vec(v)) => v,
 				None => &[],