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, 7 insertions, 4 deletions

diff --git a/tests/programs/fbench.zc b/tests/programs/fbench.zc
index 1658ba7..c3b7086 100644
--- a/tests/programs/fbench.zc
+++ b/tests/programs/fbench.zc
@@ -1,3 +1,6 @@
+namespace;
+include rt;
+
 // float kernel, plain and o3. bench_float.sh times them. the letter picks the
 // kernel and the digits are how many times to run it, same shape as bench.zc.
 float poly(int n) {
@@ -23,15 +26,15 @@ o3 float poly3(int n) {
 	return s;
 }
 fn main() {
-	let which = get_c(), reps = 0, ch = get_c(), r = 0;
-	while (ch >= 48 && ch <= 57) { reps = reps * 10 + ch - 48; ch = get_c(); }
+	let which = rt.get_c(), reps = 0, ch = rt.get_c(), r = 0;
+	while (ch >= 48 && ch <= 57) { reps = reps * 10 + ch - 48; ch = rt.get_c(); }
 	while (reps > 0) {
 		if (which == 97) r = (int)poly(20000);
 		if (which == 98) r = (int)poly3(20000);
 		if (which == 99) r = (int)poly(2000);
 		reps = reps - 1;
 	}
-	put_n(r);
-	put_c(10);
+	rt.put_n(r);
+	rt.put_c(10);
 	return 0;
 }