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, 24 insertions, 0 deletions

diff --git a/tests/drivers/codeactions_client_test.js b/tests/drivers/codeactions_client_test.js
new file mode 100644
index 0000000..f1936e7
--- /dev/null
+++ b/tests/drivers/codeactions_client_test.js
@@ -0,0 +1,24 @@
+const assert = require('assert');
+const { convertCodeActions } = require('../../editors/vscode/client/codeactions');
+class Range { constructor(...coordinates) { this.coordinates = coordinates; } }
+class WorkspaceEdit {
+    constructor() { this.edits = []; }
+    replace(uri, range, text) { this.edits.push({ uri, range, text }); }
+}
+class CodeAction { constructor(title, kind) { this.title = title; this.kind = kind; } }
+const vscode = { Range, WorkspaceEdit, CodeAction, CodeActionKind: { QuickFix: 'quickfix' }, Uri: { parse: s => s } };
+const uri = 'file:///test.zc', doc = { uri: { toString: () => uri }, version: 3 };
+const edit = { range: { start: { line: 0, character: 0 }, end: { line: 0, character: 0 } }, newText: 'include rt;\n' };
+const source = { title: 'include rt;', kind: 'quickfix', isPreferred: true, edit: { documentChanges: [{ textDocument: { uri, version: 3 }, edits: [edit] }] } };
+const actions = convertCodeActions(vscode, [source], doc);
+assert.strictEqual(actions.length, 1);
+assert.strictEqual(actions[0].kind, 'quickfix');
+assert.strictEqual(actions[0].isPreferred, true);
+assert.deepStrictEqual(actions[0].edit.edits[0], { uri, range: new Range(0, 0, 0, 0), text: 'include rt;\n' });
+assert.deepStrictEqual(convertCodeActions(vscode, [source], { ...doc, version: 4 }), [], 'stale document versions cannot become editor edits');
+assert.strictEqual(convertCodeActions(vscode, [source], { ...doc, version: 1 }, 3).length, 1, 'protocol version epochs are distinct from editor versions');
+assert.strictEqual(convertCodeActions(vscode, [{ ...source, edit: { changes: { [uri]: [edit] } } }], doc).length, 1);
+assert.deepStrictEqual(convertCodeActions(vscode, null, doc), []);
+assert.deepStrictEqual(convertCodeActions(vscode, [{ title: 'no edit' }, { ...source, edit: { changes: {} } }], doc), []);
+assert.deepStrictEqual(source.edit.documentChanges[0].edits, [edit], 'conversion keeps protocol objects intact');
+console.log('ok   quick-fix client conversion, stale-version rejection and empty responses');