chore: docker compose, mise.toml, updated toolchain

- Dockerfile: updated to serve mode with web/ embed, expose 8080
- docker-compose.yml: new, maps :8080 and output volume
- Makefile: added serve, akaiutil, electron-* targets
- mise.toml: new, go 1.26 + node 22, all build/run tasks
- .gitignore: exclude built akaiutil binary

Makefile

@@ -1,21 +1,60 @@
 BIN := fetch
 IMAGE := akai-fetch
 REMOTE := dhg.lol
+ELECTRON_DIR := electron
 
 build:
 	CGO_ENABLED=0 go build -buildvcs=false -o $(BIN) .
 
+akaiutil:
+	$(MAKE) -C third_party/akaiutil
+
+all: build akaiutil
+
 docker:
 	docker build -t $(IMAGE) .
 
 docker-run:
 	docker run --rm -v "$(PWD)/output:/data" $(IMAGE) $(ARGS)
 
+docker-up:
+	docker compose up --build
+
+docker-down:
+	docker compose down
+
+serve: build
+	./$(BIN) serve
+
+# ─── Electron targets ──────────────────────────────────────
+
+electron-deps:
+	cd $(ELECTRON_DIR) && npm install
+
+electron-dev: build
+	cd $(ELECTRON_DIR) && npx electron .
+
+electron-build: build akaiutil
+	cd $(ELECTRON_DIR) && npx electron-builder --dir
+
+electron-build-mac: build akaiutil
+	cd $(ELECTRON_DIR) && npx electron-builder --mac --dir
+
+electron-build-linux: build akaiutil
+	cd $(ELECTRON_DIR) && npx electron-builder --linux --dir
+
+# ─── Server / remote ───────────────────────────────────────
+
 install: build
 	scp $(BIN) $(REMOTE):/tmp/$(BIN) && \
 	ssh $(REMOTE) "sudo mv /tmp/$(BIN) /DATA/Downloads/akai/$(BIN) && sudo chmod +x /DATA/Downloads/akai/$(BIN)"
 
 clean:
 	rm -f $(BIN)
+	rm -rf $(ELECTRON_DIR)/dist
+	rm -rf $(ELECTRON_DIR)/node_modules
+	$(MAKE) -C third_party/akaiutil clean
 
-.PHONY: build docker docker-run install clean
+.PHONY: build akaiutil all docker docker-run docker-up docker-down serve \
+        electron-deps electron-dev electron-build electron-build-mac electron-build-linux \
+        install clean