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, 14 insertions, 11 deletions

diff --git a/tests/programs/o3direct.zc b/tests/programs/o3direct.zc
index 3c5d7ee..7998129 100644
--- a/tests/programs/o3direct.zc
+++ b/tests/programs/o3direct.zc
@@ -1,3 +1,6 @@
+namespace;
+include rt, run;
+
 // o3 calls between functions: arguments in registers, results on the stack, and the ways a call can leave the fast path
 fn put_f(x) { asm { x @ #1220 } return 0; }
 struct node { int v; node *next; };
@@ -10,24 +13,24 @@ o3 int four(int a, int b, int c, int d) { return three(a, b, c) * 10 + d; }
 o3 int zero() { return 7; }
 o3 int ack(int m, int n) { if (m == 0) return n + 1; if (n == 0) return ack(m - 1, 1); return ack(m - 1, ack(m, n - 1)); }
 o3 float half(float x, int k) { if (k == 0) return x; return half(x / 2.0, k - 1); }
-o3 int noisy(int n) { if (n == 0) return 0; put_n(n); put_c(' '); return n + noisy(n - 1); }
+o3 int noisy(int n) { if (n == 0) return 0; rt.put_n(n); rt.put_c(' '); return n + noisy(n - 1); }
 unchecked o3 int sumlist(node *p) { int s = 0; while (p) { s = s + p.v; p = p.next; } return s; }
 unchecked o3 int build(int n) {
 	node *h = 0;
-	for (int i = 1; i <= n; i++) { node *x = new(node); x.v = i; x.next = h; h = x; }
+	for (int i = 1; i <= n; i++) { node *x = rt.new(node); x.v = i; x.next = h; h = x; }
 	int s = sumlist(h);
-	while (h) { node *t = h.next; free(h); h = t; }
+	while (h) { node *t = h.next; rt.free(h); h = t; }
 	return s;
 }
 unchecked o3 int mix(int a, int b) { return three(a, zero(), b) + fib(a) + four(1, 2, 3, b); }
 unchecked fn main() {
-	put_n(fib(20)); put_c(' ');
-	put_n(ev(10)); put_c(' '); put_n(ev(7)); put_c(' ');
-	put_n(three(1, 2, 3)); put_c(' '); put_n(four(4, 5, 6, 7)); put_c(' '); put_n(zero()); put_c(' ');
-	put_n(ack(2, 3)); put_c(' ');
-	put_f(half(64.0, 3)); put_c(' ');
-	put_n(build(100)); put_c(' ');
-	put_n(mix(6, 9)); put_c(10);
-	put_n(noisy(4)); put_c(10);
+	rt.put_n(fib(20)); rt.put_c(' ');
+	rt.put_n(ev(10)); rt.put_c(' '); rt.put_n(ev(7)); rt.put_c(' ');
+	rt.put_n(three(1, 2, 3)); rt.put_c(' '); rt.put_n(four(4, 5, 6, 7)); rt.put_c(' '); rt.put_n(zero()); rt.put_c(' ');
+	rt.put_n(ack(2, 3)); rt.put_c(' ');
+	put_f(half(64.0, 3)); rt.put_c(' ');
+	rt.put_n(build(100)); rt.put_c(' ');
+	rt.put_n(mix(6, 9)); rt.put_c(10);
+	rt.put_n(noisy(4)); rt.put_c(10);
 	return 0;
 }