Switch remote deploy to vendored source builds

Move remote deployment to a vendored source bundle built on the target host via Docker so redeploys no longer require local cross-compilation or host Go installation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

vendor/github.com/samber/lo/Makefile

@@ -0,0 +1,42 @@
+
+build:
+	go build -v ./...
+
+test:
+	go test -race -v ./...
+watch-test:
+	reflex -t 50ms -s -- sh -c 'gotest -race -v ./...'
+
+bench:
+	go test -benchmem -count 3 -bench ./...
+watch-bench:
+	reflex -t 50ms -s -- sh -c 'go test -benchmem -count 3 -bench ./...'
+
+coverage:
+	go test -v -coverprofile=cover.out -covermode=atomic ./...
+	go tool cover -html=cover.out -o cover.html
+
+# tools
+tools:
+	go install github.com/cespare/reflex@latest
+	go install github.com/rakyll/gotest@latest
+	go install github.com/psampaz/go-mod-outdated@latest
+	go install github.com/jondot/goweight@latest
+	go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+	go get -t -u golang.org/x/tools/cmd/cover
+	go install github.com/sonatype-nexus-community/nancy@latest
+	go mod tidy
+
+lint:
+	golangci-lint run --timeout 60s --max-same-issues 50 ./...
+lint-fix:
+	golangci-lint run --timeout 60s --max-same-issues 50 --fix ./...
+
+audit: tools
+	go list -json -m all | nancy sleuth
+
+outdated: tools
+	go list -u -m -json all | go-mod-outdated -update -direct
+
+weight: tools
+	goweight