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, 13 insertions, 8 deletions

diff --git a/Makefile b/Makefile
index 6c42e62..b0e0df1 100644
--- a/Makefile
+++ b/Makefile
@@ -26,6 +26,8 @@ else
   EXE :=
   IO  := src/core/io_linux.c
   PORT := src/micro/port_linux.c
+  CFLAGS += -pthread
+  MICRO_THREADS := -DZY_THREADS
 endif
 
 BIN := bin
@@ -41,7 +43,7 @@ $(BIN) $(B):
 
 $(BIN)/zc0$(EXE): src/tools/zc0.c src/core/memmap.h src/core/fops.h src/core/bops.h | $(BIN)
 	$(CC) -O1 -w -fwrapv src/tools/zc0.c -Isrc/core -o $@
-$(BIN)/mkgenome$(EXE): src/tools/mkgenome.c | $(BIN)
+$(BIN)/mkgenome$(EXE): src/tools/mkgenome.c src/core/memmap.h | $(BIN)
 	$(CC) -O1 -w -fwrapv src/tools/mkgenome.c -Isrc/core -o $@
 $(BIN)/genmap$(EXE): src/tools/genmap.c | $(BIN)
 	$(CC) $(CFLAGS) src/tools/genmap.c -Isrc/core -o $@
@@ -51,27 +53,30 @@ $(BIN)/zy$(EXE): src/core/core.c $(IO) src/core/genome.h src/core/memmap.h src/c
 	$(CC) $(CFLAGS) -DJTYPE=int src/core/core.c $(IO) -Isrc/core -o $@
 # the portable microcore
 $(BIN)/zym$(EXE): src/micro/micro.c src/micro/micro_port.h $(PORT) src/core/genome.h src/core/memmap.h src/core/fops.h src/core/bops.h src/core/stack.h | $(BIN)
-	$(CC) $(CFLAGS) src/micro/micro.c $(PORT) -Isrc/core -Isrc/micro -o $@
+	$(CC) $(CFLAGS) $(MICRO_THREADS) src/micro/micro.c $(PORT) -Isrc/core -Isrc/micro -o $@
 
 # the language server is the compiler in check mode plus src/lsp/server.zc, on a map
 # sized to it
 lsp: $(BIN)/zclsp$(EXE)
-$(BIN)/zclsp$(EXE): src/core/core.c src/core/io_linux.c src/core/fops.h src/core/bops.h src/core/stack.h src/core/memmap.h src/runtime/rt.zc src/compiler/compiler.zc src/lsp/server.zc src/tools/zc0.c src/tools/genmap.c src/tools/automap.sh src/tools/mklsp.sh | $(BIN)
+$(BIN)/zclsp$(EXE): src/core/core.c src/core/io_linux.c src/core/fops.h src/core/bops.h src/core/stack.h src/core/memmap.h src/runtime/rt.zc src/core/core.zc src/compiler/compiler.zc src/lsp/server.zc src/lib/std.zc src/lib/icon.zc src/tools/embed.sh src/tools/zc0.c src/tools/genmap.c src/tools/automap.sh src/tools/mklsp.sh | $(BIN)
 	CC="$(CC)" bash src/tools/mklsp.sh $(B)/lsp
 	cp $(B)/lsp/zclsp$(EXE) $@
 
+src/compiler/compiler.zc: src/lib/std.zc src/lib/icon.zc src/tools/embed.sh
+	bash src/tools/embed.sh all
+
 # bootstrap: zc0 compiles the compiler to g0, g0 compiles it to g1, g1 to g2.
 # g1 and g2 must be identical (the fixpoint), and g1 becomes src/core/genome.h.
-genome: $(BIN)/zc0$(EXE) $(BIN)/mkgenome$(EXE) | $(B)
+genome: $(BIN)/zc0$(EXE) $(BIN)/mkgenome$(EXE) src/compiler/compiler.zc | $(B)
 	mkdir -p $(B)/s0 $(B)/s1
 	cp src/core/core.c $(IO) src/core/memmap.h src/core/fops.h src/core/bops.h src/core/stack.h $(B)/s0/
 	cp src/core/core.c $(IO) src/core/memmap.h src/core/fops.h src/core/bops.h src/core/stack.h $(B)/s1/
-	cat src/runtime/rt.zc src/compiler/compiler.zc | $(BIN)/zc0$(EXE) > $(B)/s0/genome.h
+	cat src/runtime/rt.zc src/core/core.zc src/compiler/compiler.zc | $(BIN)/zc0$(EXE) > $(B)/s0/genome.h
 	$(CC) $(CFLAGS) -DJTYPE=int $(B)/s0/core.c $(B)/s0/$(notdir $(IO)) -o $(B)/zy0$(EXE)
-	(cat src/tools/build.zc; printf '`'; cat src/runtime/rt.zc src/compiler/compiler.zc) | $(B)/zy0$(EXE) > $(B)/g1.bin
+	(cat src/tools/build.zc; printf '`'; cat src/runtime/rt.zc src/core/core.zc src/compiler/compiler.zc) | $(B)/zy0$(EXE) > $(B)/g1.bin
 	$(BIN)/mkgenome$(EXE) < $(B)/g1.bin > $(B)/s1/genome.h
 	$(CC) $(CFLAGS) -DJTYPE=int $(B)/s1/core.c $(B)/s1/$(notdir $(IO)) -o $(B)/zy1$(EXE)
-	(cat src/tools/build.zc; printf '`'; cat src/runtime/rt.zc src/compiler/compiler.zc) | $(B)/zy1$(EXE) > $(B)/g2.bin
+	(cat src/tools/build.zc; printf '`'; cat src/runtime/rt.zc src/core/core.zc src/compiler/compiler.zc) | $(B)/zy1$(EXE) > $(B)/g2.bin
 	cmp $(B)/g1.bin $(B)/g2.bin
 	cp $(B)/s1/genome.h src/core/genome.h
 	@echo "fixpoint: $$(( $$(wc -c < $(B)/g1.bin) / 8 )) words, src/core/genome.h updated"
@@ -96,7 +101,7 @@ run: | $(B)
 	@test -n "$(PROG)" || { echo "make run PROG=examples/hello.zc"; exit 2; }
 	bash src/tools/automap.sh run $(B)/run src/runtime/run.zc $(PROG)
 	cp src/micro/micro.c src/micro/micro_port.h $(PORT) src/core/fops.h src/core/bops.h src/core/stack.h $(B)/run/
-	$(CC) $(CFLAGS) $(B)/run/micro.c $(B)/run/$(notdir $(PORT)) -I$(B)/run -o $(B)/run/zymr$(EXE)
+	$(CC) $(CFLAGS) $(MICRO_THREADS) $(B)/run/micro.c $(B)/run/$(notdir $(PORT)) -I$(B)/run -o $(B)/run/zymr$(EXE)
 	@echo "built $(B)/run/zymr$(EXE)"
 
 # JOBS sets how many sections run at once: make test JOBS=4