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, 0 deletions

diff --git a/tests/drivers/parser_growth_test.py b/tests/drivers/parser_growth_test.py
index 4cbfbb2..9aee57e 100644
--- a/tests/drivers/parser_growth_test.py
+++ b/tests/drivers/parser_growth_test.py
@@ -22,6 +22,13 @@ source = 'struct methods { int value;\n'
 source += ''.join(f'int get_{i}() {{ return this.value + {i}; }}\n' for i in range(100))
 source += '}\nfn main() { methods item; item.value = 7; gc(); put_n(item.get_99()); put_c(10); return 0; }\n'
 run(source, '106\n')
+# grabfn owns a single token buffer while repeated growth moves replacements
+# into its released slot; the replayed method must survive compilation and gc.
+source = 'struct long_method { int seed; int count() { int value = 0;\n'
+source += 'value += 1;\n' * 400
+source += 'return value + this.seed; } };\n'
+source += 'fn main() { long_method item; item.seed = 7; gc(); put_n(item.count()); put_c(10); return 0; }\n'
+run(source, '407\n')
 source = 'enum expanded {\n'
 source += ',\n'.join(f'member_with_long_generated_name_{i} {{ ' + ''.join(f'int field_with_long_generated_name_{j}; ' for j in range(8)) + '}' for i in range(40))
 source += '\n};\nfn main() { gc(); put_n(ebcap > 8192); put_c(10); return 0; }\n'