fix(build): point sidecar jar ignore and embed paths at sidecarassets

.gitignore

@@ -30,7 +30,7 @@ node_modules/
 
 # Sidecar fat JAR. Build artifact copied in by `make sanderling` before
 # `go build -tags withsidecar`. Never commit: it's ~130 MB.
-internal/sidecar/assets/sidecar-all.jar
+internal/sidecarassets/assets/sidecar-all.jar
 
 # spec-api compiled output
 pkg/spec/dist/

Makefile

@@ -7,7 +7,7 @@ BUF := buf
 
 GO_PACKAGES := ./...
 SIDECAR_JAR := sidecar/build/libs/sidecar-all.jar
-SIDECAR_EMBED := internal/sidecar/assets/sidecar-all.jar
+SIDECAR_EMBED := internal/sidecarassets/assets/sidecar-all.jar
 SIDECAR_SRC := $(shell find sidecar/src -type f \( -name '*.kt' -o -name '*.kts' \) 2>/dev/null) build.gradle.kts settings.gradle.kts
 SANDERLING_BIN := bin/sanderling