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, 10 insertions, 7 deletions

diff --git a/tests/programs/bounds.zc b/tests/programs/bounds.zc
index 42c3997..6908683 100644
--- a/tests/programs/bounds.zc
+++ b/tests/programs/bounds.zc
@@ -1,17 +1,20 @@
+namespace;
+include rt;
+
 // a +1 loop whose bound is len of the fixed array: the check is gone, the sum is not
-fn acc(fixed []int f) {
+fn acc(fixed int[?] f) {
 	int n = len(f), i = 0, s = 0;
 	for (; i < n; i += 1) f[i] = i + 1;
 	for (i = 0; i < n; i++) s = s + f[i];
 	return s;
 }
-o3 fn acc3(fixed []int f) {
+o3 fn acc3(fixed int[?] f) {
 	int n = len(f), i = 0, s = 0;
 	for (; i < n; i++) f[i] = i + 1;
 	for (i = 0; i < n; i++) s += f[i];
 	return s;
 }
-o3 fn small(fixed []int f) {
+o3 fn small(fixed int[?] f) {
 	int n = len(f), c = 0, i, j;
 	for (i = 2; i < n; i++) f[i] = 1;
 	for (i = 2; i * i < n; i++)
@@ -20,9 +23,9 @@ o3 fn small(fixed []int f) {
 	return c;
 }
 fn main() {
-	fixed []int f = new(fixed []int, 10);
-	fixed []int g = new(fixed []int, 20);
-	put_n(acc(f)); put_c(32); put_n(acc3(f)); put_c(32); put_n(small(g)); put_c(10);
-	free(d*f); free(d*g);
+	fixed int[?] f = rt.new(fixed int[?], 10);
+	fixed int[?] g = rt.new(fixed int[?], 20);
+	rt.put_n(acc(f)); rt.put_c(32); rt.put_n(acc3(f)); rt.put_c(32); rt.put_n(small(g)); rt.put_c(10);
+	rt.free(d*f); rt.free(d*g);
 	return 0;
 }