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, 27 insertions, 24 deletions

diff --git a/tests/programs/o3bytes.zc b/tests/programs/o3bytes.zc
index bada583..7c971ed 100644
--- a/tests/programs/o3bytes.zc
+++ b/tests/programs/o3bytes.zc
@@ -1,52 +1,55 @@
+namespace;
+include rt;
+
 // byte ops called from o3 stay in the region. ld8/st8 and the 16- and 32-bit
 // pair are opcodes there, on the interpreter, the arm64 jit and llvm.
-fn sp() { put_c(32); return 0; }
+fn sp() { rt.put_c(32); return 0; }
 fn litw(v) { return v + v + 1; }
-fn f() { put_c('A'); return 0; }
+fn f() { rt.put_c('A'); return 0; }
 fn main() {
 	let buf[4], b, i, s, t, p, v, w;
 	i = 0;
 	while (i < 4) { buf[i] = 0; i++; }
-	b = addr_b(buf);
+	b = rt.addr_b(buf);
 	i = 0;
 	s = 0;
 	o3 {
 		while (i < 20) {
 			t = b + i;
-			st8(t, i);
-			s = s + ld8(t);
+			rt.st8(t, i);
+			s = s + rt.ld8(t);
 			i++;
 		}
 	}
-	put_n(s); sp();
-	o3 { st16(b, 4660); w = ld16(b); }
-	put_n(w); sp();
+	rt.put_n(s); sp();
+	o3 { rt.st16(b, 4660); w = rt.ld16(b); }
+	rt.put_n(w); sp();
 	t = b + 7;
-	o3 { w = ld8(t); }
-	put_n(w); sp();
-	o3 { w = ld16(t); }
-	put_n(w); sp();
+	o3 { w = rt.ld8(t); }
+	rt.put_n(w); sp();
+	o3 { w = rt.ld16(t); }
+	rt.put_n(w); sp();
 	t = b + 10;
 	v = 16909060;
-	o3 { st32(t, v); w = ld32(t); }
-	put_n(w); sp();
+	o3 { rt.st32(t, v); w = rt.ld32(t); }
+	rt.put_n(w); sp();
 	t = 0 - 1;
-	o3 { st8(t, v); w = ld8(t); }
-	put_n(w); sp();
-	t = addr_b(MW) - 1;
-	o3 { w = ld16(t); }
-	put_n(w);
-	put_c(10);
+	o3 { rt.st8(t, v); w = rt.ld8(t); }
+	rt.put_n(w); sp();
+	t = rt.addr_b(rt.MW) - 1;
+	o3 { w = rt.ld16(t); }
+	rt.put_n(w);
+	rt.put_c(10);
 	p = f;
 	f();
 	while (*p != litw('A')) p++;
-	t = addr_b(p);
+	t = rt.addr_b(p);
 	v = litw('B') & 255;
-	o3 { st8(t, v); }
+	o3 { rt.st8(t, v); }
 	f();
 	v = litw('C') & 255;
-	o3 { st8(t, v); }
+	o3 { rt.st8(t, v); }
 	f();
-	put_c(10);
+	rt.put_c(10);
 	return 0;
 }