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, 31 insertions, 28 deletions

diff --git a/tests/programs/strings.zc b/tests/programs/strings.zc
index 431bd4e..cde3a94 100644
--- a/tests/programs/strings.zc
+++ b/tests/programs/strings.zc
@@ -1,37 +1,40 @@
+namespace;
+include rt;
+
 fn main() {
 	let a = b"hi", b = b"!", c = a + b;
 	let mid = c[1:3];
-	let neg = s_to_n(b"-42");
-	let p = n_to_s(42);
-	let q = n_to_s(0 - 42);
-	let ten = s_to_n(b"10");
-	let big = n_to_s(1 << 63);
+	let neg = rt.s_to_n(b"-42");
+	let p = rt.n_to_s(42);
+	let q = rt.n_to_s(0 - 42);
+	let ten = rt.s_to_n(b"10");
+	let big = rt.n_to_s(1 << 63);
 	let empty = b"";
 	let tail = c[2:99];
 	let esc = b"a\nb";
 	let z = b"" + b"ab";
-	put_s(c); put_c(32);
-	put_n(len(c)); put_c(32);
-	put_n(len_s(c)); put_c(32);
-	put_n(c[0]); put_c(32);
-	put_s(mid); put_c(32);
-	put_n(c == b"hi!"); put_c(32);
-	put_n(c != b"hi"); put_c(32);
-	put_n(c < b"hj"); put_c(32);
-	put_n(neg); put_c(32);
-	put_s(p); put_c(32);
-	put_s(q); put_c(32);
-	put_n(ten + 1); put_c(32);
-	put_n(p == b"42"); put_c(32);
-	put_s(big); put_c(32);
-	put_n(len(empty)); put_c(32);
-	put_n(len(tail)); put_c(32);
-	put_n(len_s(esc)); put_c(32);
-	put_n(at_s(esc, 1)); put_c(32);
-	put_n(b"ab" > b"a"); put_c(32);
-	put_n(b"ab" >= b"ab"); put_c(32);
-	put_n(b"a" <= b"a"); put_c(32);
-	put_s("W"); put_c(32);
-	put_s(z); put_c(10);
+	rt.put_s(c); rt.put_c(32);
+	rt.put_n(len(c)); rt.put_c(32);
+	rt.put_n(rt.len_s(c)); rt.put_c(32);
+	rt.put_n(c[0]); rt.put_c(32);
+	rt.put_s(mid); rt.put_c(32);
+	rt.put_n(c == b"hi!"); rt.put_c(32);
+	rt.put_n(c != b"hi"); rt.put_c(32);
+	rt.put_n(c < b"hj"); rt.put_c(32);
+	rt.put_n(neg); rt.put_c(32);
+	rt.put_s(p); rt.put_c(32);
+	rt.put_s(q); rt.put_c(32);
+	rt.put_n(ten + 1); rt.put_c(32);
+	rt.put_n(p == b"42"); rt.put_c(32);
+	rt.put_s(big); rt.put_c(32);
+	rt.put_n(len(empty)); rt.put_c(32);
+	rt.put_n(len(tail)); rt.put_c(32);
+	rt.put_n(rt.len_s(esc)); rt.put_c(32);
+	rt.put_n(rt.at_s(esc, 1)); rt.put_c(32);
+	rt.put_n(b"ab" > b"a"); rt.put_c(32);
+	rt.put_n(b"ab" >= b"ab"); rt.put_c(32);
+	rt.put_n(b"a" <= b"a"); rt.put_c(32);
+	rt.put_s("W"); rt.put_c(32);
+	rt.put_s(z); rt.put_c(10);
 	return 0;
 }