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, 11 insertions, 11 deletions

diff --git a/tests/drivers/float_backends_test.py b/tests/drivers/float_backends_test.py
index 2cb9473..cdcf48b 100644
--- a/tests/drivers/float_backends_test.py
+++ b/tests/drivers/float_backends_test.py
@@ -5,19 +5,19 @@ import subprocess
 
 root = pathlib.Path(__file__).resolve().parents[2]
 commands = [['bin/zy'], ['bin/zym'], ['node', 'src/js/tinyvm.js']]
-sources = [(root / 'tests/programs/float.zc').read_text(), '''fn render(bits, precision, mode) { asm { bits @ precision @ mode @ #1236 } return 0; }
+sources = [(root / 'tests/programs/float.zc').read_text(), '''include rt; fn render(bits, precision, mode) { asm { bits @ precision @ mode @ #1236 } return 0; }
 fn convert(bits) { return asm { bits @ #1218 }; }
 fn main() {
- [4]f32 values;
+ f32[4] values;
  values[0] = 1.5; values[1] = -2.25; values[2] = 1e-45; values[3] = 1e40;
- put_n(values[0] == 1.5); put_c(32); put_n(values[1] == -2.25); put_c(32);
- put_n(values[2] > 0.0); put_c(32); put_n(values[3] == 1.0 / 0.0); put_c(10);
- render(0.125, 2, 1); put_c(32); render(-0.125, 2, 1); put_c(32);
- render(1e30, 6, 1); put_c(32); render(1.7976931348623157e308, 6, 1); put_c(10);
- render(0.1, 0, 0); put_c(32); render(1e-5, 0, 0); put_c(32); render(1e16, 0, 0); put_c(10);
- render(9.999, 3, 2); put_c(32); render(5e-324, 3, 2); put_c(32); render(0, 3, 2); put_c(10);
- let negative_zero = 1 << 63; render(negative_zero, 6, 1); put_c(32); render(negative_zero, 0, 0); put_c(10);
- put_n(convert(0.0 / 0.0)); put_c(32); put_n(convert(1.0 / 0.0)); put_c(32); put_n(convert(-1.0 / 0.0)); put_c(10);
+ rt.put_n(values[0] == 1.5); rt.put_c(32); rt.put_n(values[1] == -2.25); rt.put_c(32);
+ rt.put_n(values[2] > 0.0); rt.put_c(32); rt.put_n(values[3] == 1.0 / 0.0); rt.put_c(10);
+ render(0.125, 2, 1); rt.put_c(32); render(-0.125, 2, 1); rt.put_c(32);
+ render(1e30, 6, 1); rt.put_c(32); render(1.7976931348623157e308, 6, 1); rt.put_c(10);
+ render(0.1, 0, 0); rt.put_c(32); render(1e-5, 0, 0); rt.put_c(32); render(1e16, 0, 0); rt.put_c(10);
+ render(9.999, 3, 2); rt.put_c(32); render(5e-324, 3, 2); rt.put_c(32); render(0, 3, 2); rt.put_c(10);
+ let negative_zero = 1 << 63; render(negative_zero, 6, 1); rt.put_c(32); render(negative_zero, 0, 0); rt.put_c(10);
+ rt.put_n(convert(0.0 / 0.0)); rt.put_c(32); rt.put_n(convert(1.0 / 0.0)); rt.put_c(32); rt.put_n(convert(-1.0 / 0.0)); rt.put_c(10);
  return 0;
 }
 ''']
@@ -40,7 +40,7 @@ for i, source in enumerate(sources):
 
 # an exponent after a long fractional spelling must reach the parser intact.
 literal = '1.' + '0' * 300 + 'e1'
-source = f'fn main() {{ put_n(({literal} as word) == 0x4024000000000000); put_c(10); return 0; }}\n'
+source = f'include rt; fn main() {{ rt.put_n(({literal} as word) == 0x4024000000000000); rt.put_c(10); return 0; }}\n'
 for command in commands:
     result = subprocess.run(command, input=source, text=True, capture_output=True, timeout=15)
     assert result.returncode == 0 and result.stdout == '1\n', (command, result.stdout, result.stderr)