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, 22 insertions, 19 deletions

diff --git a/examples/dump.zc b/examples/dump.zc
index df9a864..540471a 100644
--- a/examples/dump.zc
+++ b/examples/dump.zc
@@ -1,30 +1,33 @@
+namespace;
+include rt, run;
+
 // printing any struct with no printing code: the heap knows each object's
 // type, and reflection walks its fields
 struct person { char* name; int age; };
 struct item { char* name; int count; person* owner; };
 
-fn dump(p) {
-	let t = typeof_obj(p), i = 0;
-	if (!t) { put_s("?"); return 0; }
-	tprint(t); put_s(" { ");
-	while (i < tnfields(t)) {
-		let ft = tftype(t, i), v = p[tfoff(t, i)];
-		if (i) put_s(", ");
-		put_s(tfname(t, i)); put_s(": ");
-		if (tkind(ft) == TY_PTR && telem(ft) == typeof(char)) { put_c('"'); put_s(v); put_c('"'); }
-		else if (tkind(ft) == TY_PTR) { if (v) dump(v); else put_s("null"); }
-		else put_n(v);
+void dump(p) {
+	let t = rt.typeof_obj(p), i = 0;
+	if (!t) { rt.put_s("?"); return; }
+	run.tprint(t); rt.put_s(" { ");
+	while (i < run.tnfields(t)) {
+		let ft = run.tftype(t, i), v = p[run.tfoff(t, i)];
+		if (i) rt.put_s(", ");
+		rt.put_s(run.tfname(t, i)); rt.put_s(": ");
+		if (run.tkind(ft) == run.TY_PTR && run.telem(ft) == typeof(char)) { rt.put_c('"'); rt.put_s(v); rt.put_c('"'); }
+		else if (run.tkind(ft) == run.TY_PTR) { if (v) dump(v); else rt.put_s("null"); }
+		else rt.put_n(v);
 		i++;
 	}
-	put_s(" }");
-	return 0;
+	rt.put_s(" }");
+	return;
 }
-fn main() {
-	person* ana = new(person);
+void main() {
+	person* ana = rt.new(person);
 	ana.name = "ana"; ana.age = 30;
-	item* lamp = new(item);
+	item* lamp = rt.new(item);
 	lamp.name = "lamp"; lamp.count = 3; lamp.owner = ana;
-	dump(lamp); put_c(10);
-	free(d*lamp);
-	return 0;
+	dump(lamp); rt.put_c(10);
+	rt.free(lamp);
+	return;
 }