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, 18 insertions, 15 deletions

diff --git a/tests/programs/arrays.zc b/tests/programs/arrays.zc
index a8a12bf..b1fa43b 100644
--- a/tests/programs/arrays.zc
+++ b/tests/programs/arrays.zc
@@ -1,23 +1,26 @@
+namespace;
+include rt;
+
 // growable arrays and fixed ones
 struct point { int x, y; };
 fn main() {
-	let before = live_objects();
+	let before = rt.live_objects();
 	{
-		[]int a = new([]int);
+		int[?] a = rt.new(int[?]);
 		for (int i = 0; i < 100; i++) push(a, i * i);
-		put_n(len(a)); put_c(' '); put_n(cap(a)); put_c(' '); put_n(a[99]); put_c(' ');
-		put_n(pop(a)); put_c(' '); put_n(len(a)); put_c(' ');
-		resize(a, 3); put_n(len(a)); put_c(' '); put_n(a[2]); put_c(' ');
-		fixed []int f = new(fixed []int, 5);
-		f[4] = 7; put_n(f[4] + len(f)); put_c(' ');
-		[]point ps = new([]point, 2);
-		ps[1].y = 9; resize(ps, 10); put_n(ps[1].y + len(ps)); put_c(' ');
-		[8]int st; put_n(len(st)); put_c(' ');
-		[]point* owned = new([]point*);
-		for (int i = 0; i < 20; i++) { point* p = new(point); p.x = i; push(owned, d*p); }
-		put_n(owned[19].x); put_c(' ');
-		put_n(live_objects() - before); put_c(10);
+		rt.put_n(len(a)); rt.put_c(' '); rt.put_n(cap(a)); rt.put_c(' '); rt.put_n(a[99]); rt.put_c(' ');
+		rt.put_n(pop(a)); rt.put_c(' '); rt.put_n(len(a)); rt.put_c(' ');
+		resize(a, 3); rt.put_n(len(a)); rt.put_c(' '); rt.put_n(a[2]); rt.put_c(' ');
+		fixed int[?] f = rt.new(fixed int[?], 5);
+		f[4] = 7; rt.put_n(f[4] + len(f)); rt.put_c(' ');
+		point[?] ps = rt.new(point[?], 2);
+		ps[1].y = 9; resize(ps, 10); rt.put_n(ps[1].y + len(ps)); rt.put_c(' ');
+		int[8] st; rt.put_n(len(st)); rt.put_c(' ');
+		point*[?] owned = rt.new(point*[?]);
+		for (int i = 0; i < 20; i++) { point* p = rt.new(point); p.x = i; push(owned, d*p); }
+		rt.put_n(owned[19].x); rt.put_c(' ');
+		rt.put_n(rt.live_objects() - before); rt.put_c(10);
 	}
-	put_n(live_objects() - before); put_c(10);
+	rt.put_n(rt.live_objects() - before); rt.put_c(10);
 	return 0;
 }