build: embed images with #embed, keep everything generated in build/

the cores take their genome in with c23 #embed through src/core/genome.h,
so images are plain little-endian word files (genome.bin) instead of
generated c headers. zc0 writes that format, mkgenome checks an image
against its map and shows a compiler's diagnostics when it gets them,
and the javascript vm and the editor's vm host read the same files.
src/tools/findcc.sh picks a compiler with #embed (clang 19 or gcc 15).

zc gets an embed declaration, embed "file" as [type] name, for globals
and locals: a byte string by default, char*, numbers read little-endian,
and arrays of numbers. the compiler and language server carry their
library and source texts through it, so embed.sh and the text it
spliced into compiler.zc are gone.

make writes executables to build/bin, the default map to build/core/map,
the web page to build/web and the extension staging to build/vsix, and
the genome now rebuilds when its sources change. the test suite lays
out its own map and bootstrap and reads nothing from build/.

also: rt.put_s of a byte string in zc0 images, retained function
sources no longer count as live objects, a missing include no longer
cascades into undefined-name errors, consecutive comment lines join
into one hover paragraph, and stale test fixtures follow the include
format.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/tools/mklspwasm.sh b/src/tools/mklspwasm.sh
index 4789eab..d05a5a7 100755
--- a/src/tools/mklspwasm.sh
+++ b/src/tools/mklspwasm.sh
@@ -3,21 +3,22 @@
 # by default, or the path given as the first argument. the server is the compiler
 # and src/lsp/server.zc on the map and genome that src/tools/mklsp.sh made in build/lsp,
 # and the microcore (src/micro/micro.c) runs them. the host is client/wasmproc.js.
-# needs clang with the wasm32 target and wasm-ld; run src/tools/mklsp.sh first.
+# needs clang with the wasm32 target, #embed and wasm-ld; run src/tools/mklsp.sh first.
 #   src/tools/mklspwasm.sh [outfile.wasm]
 set -e
 case "${1:-}" in
-    --help|-h) printf '%s\n' 'usage: src/tools/mklspwasm.sh [OUTFILE.wasm]' 'builds the wasm language server; defaults to build/editors/vscode/server/lsp.wasm.' 'requires clang with wasm32 support and wasm-ld.' 'environment: LSP_BUILD_DIR selects the native lsp build; LSP_REUSE_BUILD=1 reuses its image.'; exit 0 ;;
+    --help|-h) printf '%s\n' 'usage: src/tools/mklspwasm.sh [OUTFILE.wasm]' 'builds the wasm language server; defaults to build/editors/vscode/server/lsp.wasm.' 'requires clang with wasm32 and #embed support, and wasm-ld.' 'environment: WASM_CC selects the compiler; LSP_BUILD_DIR selects the native lsp build; LSP_REUSE_BUILD=1 reuses its image.'; exit 0 ;;
     -*) echo "mklspwasm: unknown option $1; use --help for usage" >&2; exit 2 ;;
 esac
 cd "$(dirname "$0")/../.."
 OUT=${1:-build/editors/vscode/server/lsp.wasm}
 LSP_BUILD_DIR=${LSP_BUILD_DIR:-build/lsp}
+WASM_CC=${WASM_CC:-$(sh src/tools/findcc.sh --wasm)}
 if [ "${LSP_REUSE_BUILD:-0}" != 1 ]; then bash src/tools/mklsp.sh "$LSP_BUILD_DIR" >/dev/null; fi
-[ -f "$LSP_BUILD_DIR/src/lsp_genome.h" ] || { echo "mklspwasm: no language server image in $LSP_BUILD_DIR" >&2; exit 1; }
+[ -f "$LSP_BUILD_DIR/lsp_genome.bin" ] || { echo "mklspwasm: no language server image in $LSP_BUILD_DIR" >&2; exit 1; }
 mkdir -p "$(dirname "$OUT")"
-clang --target=wasm32 -O2 -w -fwrapv -nostdlib -fno-builtin -mbulk-memory -DJTYPE=int -DUSE_LSP_GENOME \
-	-I"$LSP_BUILD_DIR/src" -Isrc/micro src/micro/micro.c src/micro/port_wasm_stream.c \
+"$WASM_CC" --target=wasm32 -O2 -w -fwrapv -nostdlib -fno-builtin -mbulk-memory -DJTYPE=int -DUSE_LSP_GENOME \
+	-Isrc/core -I"$LSP_BUILD_DIR" --embed-dir="$LSP_BUILD_DIR" -Isrc/micro src/micro/micro.c src/micro/port_wasm_stream.c \
 	-Wl,--no-entry -Wl,--export=wasm_chunk -Wl,--export=wasm_chunk_cap -Wl,--export=wasm_feed \
 	-Wl,--export=wasm_polling -Wl,--export=wasm_close -Wl,--export=wasm_start -Wl,--export=wasm_resume \
 	-Wl,--export=memory -Wl,--allow-undefined -Wl,--initial-memory=41943040 -Wl,-z,stack-size=65536 \