feat: grow memory limits, add icon/actor libraries, overhaul LSP diagnostics

Compiler and VM
- make every memory map limit dynamic and adjustable at both build time and
  runtime, including compiler tables, stacks, and every execution region
- reserve and grow tables, operand and return stacks, frame segments, and
  image-building output without relocating live code or globals
- rename i/o and string helpers consistently (puts -> put_s, putn -> put_n,
  scat -> cat_s) across compiler, runtime, examples, tests, and docs
- recast and consume values assigned to globals from inside functions
- allow fixed and const together, add typed closure returns (fn:t(...)),
  multi-include syntax (include rt, run, core;), and recurse type inference
- never infer string literals as word, anywhere, as argument, variable, or
  return type
- draft docs/BORROW.md: a borrow checker less intrusive than Rust's but more
  intelligent

LSP and editor integration
- require explicit includes and give every toolchain area its own namespace
  (rt, lsp, run, core)
- hover for built-in types, inferred types, values known at hover time, array
  and pointer lifetime/size, library names in include statements, and inferred
  lifetimes with explanations
- honor /* */ comments as documentation for variables and arguments, and stop
  misattributing section headers or trailing comments as variable hints
- stream diagnostics and cancel stale requests on change
- jump to definition and references, including cross-file
- quick fixes with automatic library import, and namespace completion

Hints and diagnostics
- render hints as blue squigglies by default, with hints on/small/off per file
- suppress magic-number hints via a preceding /* */ comment, and say so
- warn on unused arguments; allow multiple _ discards in parameters, pattern
  matching, and tagged enums, warning if a _ is actually used
- rewrite hint and comment prose in professional compiler-doc register

Libraries
- add icon.zc: run-time self-modification, find/replace syntax, type and block
  edits, and step-through inspection of locals and globals
- add actor.zc: async actors with Actor<I,O>, implicit this, spawn/recv/send,
  injected into the compiler machinery at include time rather than built in

Tooling and docs
- reorganize sources, tests, and designs into subdirectories
- unify windows entry points in tinyvm.bat and add a matching tinyvm.sh
- add --help across the toolchain
- polish the learning guide, stdlib docs, and design notes

Tests
- add accept, reject, and regression coverage across the compiler, LSP,
- runtime, icon, actors, threads, formatting, and the toolchain contracts,
  plus fuzzers and property tests

1 files changed, 7 insertions, 4 deletions

diff --git a/tests/programs/typeok.zc b/tests/programs/typeok.zc
index 26ab3ad..72a254a 100644
--- a/tests/programs/typeok.zc
+++ b/tests/programs/typeok.zc
@@ -1,21 +1,24 @@
+namespace;
+include rt;
+
 // passes the typechecker: words mix with everything, literal 0 is null,
 // arrays decay to pointers, generic calls bind their parameters
 typecheck on;
 struct pair<A, B> { A a; B b; };
-pair<A, B>*.u mk<A, B>(A x, B y) { pair<A, B>* p = new(pair<A, B>); p.a = x; p.b = y; return u*p; }
+pair<A, B>*.u mk<A, B>(A x, B y) { pair<A, B>* p = rt.new(pair<A, B>); p.a = x; p.b = y; return u*p; }
 A left<A, B>(pair<A, B>* p) { return p.a; }
 int strlen2(char* s) { int n = 0; while (s[n]) n++; return n; }
 int main() {
 	pair<int, char*>* p = mk(3, "four");
 	int a = left(p);
 	char* s = p.b;
-	[8]char buf;
+	char[8] buf;
 	char* q = buf;
 	int* nothing = 0;
 	let w = 5;
 	int mixed = w + 1;
 	q[0] = 'h'; q[1] = 0;
-	put_n(a + strlen2(s) + strlen2(buf) + mixed); put_c(10);
-	free(d*p);
+	rt.put_n(a + strlen2(s) + strlen2(buf) + mixed); rt.put_c(10);
+	rt.free(d*p);
 	return 0;
 }