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, 15 insertions, 12 deletions

diff --git a/tests/programs/bitops.zc b/tests/programs/bitops.zc
index 97817b9..3b6b113 100644
--- a/tests/programs/bitops.zc
+++ b/tests/programs/bitops.zc
@@ -1,26 +1,29 @@
+namespace;
+include rt;
+
 // bit tricks and float32 conversion as micro-ops
-fn show(v) { put_n(v); put_c(' '); }
+fn show(v) { rt.put_n(v); rt.put_c(' '); }
 fn once() {
-	show(clz(1)); show(clz(0)); show(ctz(8)); show(ctz(0));
-	show(popcnt(255)); show(popcnt(-1)); show(popcnt(0));
-	show(bswap(1) == 72057594037927936);
-	show(rotl(1, 65)); show(rotr(1, 1) < 0); show(rotl(rotr(12345, 7), 7));
-	show(mulhi(-1, 5)); show(umulhi(-1, 5));
-	show(f2s(0x3ff8000000000000)); show(s2f(0x3fc00000) == 0x3ff8000000000000);
-	show(f2s(0x3ff0000000000000)); show(f2s(0x3810000000000000));
-	put_c(10);
+	show(rt.clz(1)); show(rt.clz(0)); show(rt.ctz(8)); show(rt.ctz(0));
+	show(rt.popcnt(255)); show(rt.popcnt(-1)); show(rt.popcnt(0));
+	show(rt.bswap(1) == 72057594037927936);
+	show(rt.rotl(1, 65)); show(rt.rotr(1, 1) < 0); show(rt.rotl(rt.rotr(12345, 7), 7));
+	show(rt.mulhi(-1, 5)); show(rt.umulhi(-1, 5));
+	show(rt.f2s(0x3ff8000000000000)); show(rt.s2f(0x3fc00000) == 0x3ff8000000000000);
+	show(rt.f2s(0x3ff0000000000000)); show(rt.f2s(0x3810000000000000));
+	rt.put_c(10);
 }
 // the same in a loop, so o3 lifts and fuses them
 o3 int sums(int n) {
 	int a = 0;
 	for (int i = 0; i < n; i++) {
-		a += popcnt(i) + ctz(i + 1) + clz(i + 1);
-		a ^= rotl(a, 3) + bswap(i) + f2s(s2f(i));
+		a += rt.popcnt(i) + rt.ctz(i + 1) + rt.clz(i + 1);
+		a ^= rt.rotl(a, 3) + rt.bswap(i) + rt.f2s(rt.s2f(i));
 	}
 	return a;
 }
 int main() {
 	once();
-	put_n(sums(1000)); put_c(10);
+	rt.put_n(sums(1000)); rt.put_c(10);
 	return 0;
 }