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, 17 insertions, 14 deletions

diff --git a/tests/programs/f32.zc b/tests/programs/f32.zc
index 0f60dcd..718ed8d 100644
--- a/tests/programs/f32.zc
+++ b/tests/programs/f32.zc
@@ -1,8 +1,11 @@
+namespace;
+include rt, run;
+
 // f32: single precision values and packed arrays of them
 struct vec3 { f32 x, y, z; };
 f32 gsum;
 fn put_f(x) { asm { x @ #1220 } return 0; }
-[8]f32 gbuf;
+f32[8] run.gbuf;
 
 f32 half(f32 v) { return v / 2; }
 
@@ -13,25 +16,25 @@ fn main() {
 	float c = 16777216.0 + 1.0;
 	f32 t = 0.1;
 	float u = 0.1;
-	put_f(b); put_c(' '); put_f(c); put_c(' ');
-	put_n(t == 0.1); put_n(t == u); put_n(t == (f32)u); put_c(' ');
-	put_f(half(3.0)); put_c(' ');
-	put_f(gsum * 10); put_c(' ');			// 1.000000 (0.1f * 10 in double)
+	put_f(b); rt.put_c(' '); put_f(c); rt.put_c(' ');
+	rt.put_n(t == 0.1); rt.put_n(t == u); rt.put_n(t == (f32)u); rt.put_c(' ');
+	put_f(half(3.0)); rt.put_c(' ');
+	put_f(gsum * 10); rt.put_c(' ');			// 1.000000 (0.1f * 10 in double)
 	vec3 v; v.x = 1.5; v.y = 0.1; v.z = 2;
-	put_f(v.x + v.y + v.z); put_c(' ');
+	put_f(v.x + v.y + v.z); rt.put_c(' ');
 	int i = 0;
-	gbuf[0] = 0.1; put_n(gbuf[0] == t); put_n(gbuf[0] == u); put_c(' ');
-	while (i < 8) { gbuf[i] = i * 0.25 + 0.1; i++; }
+	run.gbuf[0] = 0.1; rt.put_n(run.gbuf[0] == t); rt.put_n(run.gbuf[0] == u); rt.put_c(' ');
+	while (i < 8) { run.gbuf[i] = i * 0.25 + 0.1; i++; }
 	float s = 0;
 	i = 0;
-	while (i < 8) { s += gbuf[i]; i++; }
-	put_f(s); put_c(' ');
-	f32* p = new(f32, 100);
+	while (i < 8) { s += run.gbuf[i]; i++; }
+	put_f(s); rt.put_c(' ');
+	f32* p = rt.new(f32, 100);
 	i = 0;
 	while (i < 100) { p[i] = i; i++; }
 	s = 0; i = 0;
 	while (i < 100) { s += p[i]; i++; }
-	put_f(s); put_c(' ');
-	put_n(sizeof(gbuf)); put_n(sizeof([100]f32)); put_c(10);
-	free(d*p);
+	put_f(s); rt.put_c(' ');
+	rt.put_n(sizeof(run.gbuf)); rt.put_n(sizeof(f32[100])); rt.put_c(10);
+	rt.free(d*p);
 }