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, 28 insertions, 0 deletions

diff --git a/tests/drivers/actor_image_test.py b/tests/drivers/actor_image_test.py
new file mode 100644
index 0000000..9df8828
--- /dev/null
+++ b/tests/drivers/actor_image_test.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+# source syntax callbacks execute in the host while actor code is emitted separately.
+from pathlib import Path
+import argparse
+import subprocess
+import tempfile
+
+parser = argparse.ArgumentParser()
+parser.add_argument('--host', default='bin/zy')
+parser.add_argument('--case', default='')
+args = parser.parse_args()
+prefix = b''.join(Path(f).read_bytes() + b'\n' for f in ('src/runtime/rt.zc', 'src/core/core.zc', 'src/runtime/run.zc'))
+cases = [('declaration', Path('tests/actor/accept/declaration.zc').read_text(), b'5 7 0 0\n'), ('generic', Path('tests/actor/accept/generic_declaration.zc').read_text(), b'5 7 4 0\n')]
+for name, source, expected in cases:
+    if args.case and args.case not in name:
+        continue
+    with tempfile.TemporaryDirectory(prefix='tinyvm-actor-image-') as work:
+        directory = Path(work)
+        compiled = subprocess.run([args.host], input=Path('src/tools/build.zc').read_bytes() + b'`' + prefix + source.encode(), capture_output=True, timeout=30)
+        assert compiled.returncode == 0 and len(compiled.stdout) >= 56 and not compiled.stdout.startswith(b'zc:'), (name, compiled.stdout[:2000], compiled.stderr)
+        header = subprocess.run(['bin/mkgenome'], input=compiled.stdout, capture_output=True, check=True)
+        (directory / 'genome.h').write_bytes(header.stdout)
+        for f in ('src/core/memmap.h', 'src/core/fops.h', 'src/core/bops.h', 'src/core/stack.h', 'src/micro/micro.c', 'src/micro/micro_port.h', 'src/micro/port_linux.c'):
+            (directory / Path(f).name).write_bytes(Path(f).read_bytes())
+        subprocess.run(['cc', '-O2', '-w', '-fwrapv', '-pthread', '-DZY_THREADS', str(directory / 'micro.c'), str(directory / 'port_linux.c'), '-I' + work, '-o', str(directory / 'image')], check=True, timeout=30)
+        result = subprocess.run([str(directory / 'image')], capture_output=True, timeout=12)
+        assert result.returncode == 0 and result.stdout == expected, (name, result.returncode, result.stdout, result.stderr)
+        print('ok   actor compiler-free image: ' + name)