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, 12 insertions, 9 deletions

diff --git a/tests/programs/bench_strings.zc b/tests/programs/bench_strings.zc
index 455cff9..6f224db 100644
--- a/tests/programs/bench_strings.zc
+++ b/tests/programs/bench_strings.zc
@@ -1,27 +1,30 @@
+namespace;
+include rt;
+
 fn work() {
 	let s = b"abcdefghijklmnopqrstuvwxyz0123456789";
 	let i, acc, n, t, part, k, reps, ch;
-	ch = get_c();
+	ch = rt.get_c();
 	reps = 0;
-	while (ch >= '0' && ch <= '9') { reps = reps * 10 + ch - '0'; ch = get_c(); }
+	while (ch >= '0' && ch <= '9') { reps = reps * 10 + ch - '0'; ch = rt.get_c(); }
 	while (reps > 0) {
-		k = 0; acc = 0; n = len_s(s);
+		k = 0; acc = 0; n = rt.len_s(s);
 		while (k < 200) {
 			i = 0;
-			while (i < n) { acc = acc + at_s(s, i); i++; }
+			while (i < n) { acc = acc + rt.at_s(s, i); i++; }
 			k++;
 		}
 		t = s + b"!";
 		part = t[1:8];
-		acc = acc + len_s(t) + len_s(part) + at_s(part, 0);
-		free(part);
-		free(t);
+		acc = acc + rt.len_s(t) + rt.len_s(part) + rt.at_s(part, 0);
+		rt.free(part);
+		rt.free(t);
 		reps--;
 	}
 	return acc;
 }
 fn main() {
-	put_n(work());
-	put_c(10);
+	rt.put_n(work());
+	rt.put_c(10);
 	return 0;
 }