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, 9 insertions, 1 deletions

diff --git a/src/micro/port_wasm_stream.c b/src/micro/port_wasm_stream.c
index 155cde4..d96ceab 100644
--- a/src/micro/port_wasm_stream.c
+++ b/src/micro/port_wasm_stream.c
@@ -17,7 +17,7 @@ extern void js_msg(int c);
 static unsigned char chunk[CHUNK];
 /* the input the server has not read yet: q[qp..qn) */
 static unsigned char q[QCAP];
-static int qn, qp, closed;
+static int qn, qp, closed, polled;
 
 unsigned char *wasm_chunk(void) { return chunk; }
 int wasm_chunk_cap(void) { return (int)sizeof chunk; }
@@ -38,6 +38,10 @@ int wasm_feed(int n)
 	return 0;
 }
 
+/* 1 while the server is suspended by a poll rather than by a read: the host should resume it
+   after the event loop has run, whether or not input came */
+int wasm_polling(void) { return polled; }
+
 /* no more input will come: the next read past the end is -1 */
 void wasm_close(void) { closed = 1; }
 
@@ -83,6 +87,10 @@ Cell micro_syscall(Cell *mem, Cell op, Cell a, Cell b, Cell c)
 		if (a == 2) return HEAP_HI;
 		if (a == 3) return (Cell)micro_mem_words() * 8;
 		return -1;
+	case 42:	/* poll: suspend once so the host can feed what has arrived, then say if input is waiting */
+		if (!polled) { polled = 1; return MICRO_WAIT; }
+		polled = 0;
+		return qp < qn;
 	case 7:		/* exit: the run ends */
 		return -1;
 	case 21:	/* argc: the server has no command line of its own, so <eval> alone */