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, 6 deletions

diff --git a/tests/programs/args.zc b/tests/programs/args.zc
index aac72ec..4e0947e 100644
--- a/tests/programs/args.zc
+++ b/tests/programs/args.zc
@@ -1,16 +1,19 @@
+namespace;
+include rt, std;
+
 // the command line and the environment, as the host hands them over. argv[0]
 // is the program path, and <eval> when the source came from stdin, so argc is
 // 1 even with nothing on the command line. run through a shell with no extra
 // arguments, which is how test.sh calls it, so the line is fixed.
-include "src/lib/std.zc";
+include std;
 
 fn main() {
-	put_n(argc); put_c(32); put_s(argv[0]);
-	put_c(32); put_c(32); put_s(argv[argc - 1]);
+	rt.put_n(std.argc); rt.put_c(32); rt.put_s(std.argv[0]);
+	rt.put_c(32); rt.put_c(32); rt.put_s(std.argv[std.argc - 1]);
 	// envc counts every entry, envp holds NAME=value strings
-	put_c(32); put_n(envc > 0);
+	rt.put_c(32); rt.put_n(std.envc > 0);
 	let hit = 0;
-	for (int i = 0; i < envc; i++) if (eq_w(envp[i], "ZC_ARG_TEST=ok")) hit = 1;
-	put_c(32); put_n(hit);
+	for (int i = 0; i < std.envc; i++) if (rt.eq_w(std.envp[i], "ZC_ARG_TEST=ok")) hit = 1;
+	rt.put_c(32); rt.put_n(hit);
 	return 0;
 }
\ No newline at end of file