feat: Windows notifications, benchmarks, GPG signing, docs site, one-liner installers

Makefile

@@ -54,6 +54,22 @@ test-cover:
 	go test ./... -coverprofile=coverage.out -count=1 -timeout 60s
 	go tool cover -func=coverage.out
 
+# ── Benchmark ─────────────────────────────────────────────────────────
+
+.PHONY: bench
+bench:
+	go test ./... -bench=. -benchmem -run=^$$ -count=1
+
+# ── Release signing ───────────────────────────────────────────────────
+
+.PHONY: sign
+sign:
+	@for f in $(BUILD_DIR)/clip-sync-*; do \
+		echo "Signing $$f"; \
+		gpg --batch --yes --armor --detach-sign "$$f"; \
+	done
+	@echo "Signed binaries in $(BUILD_DIR)/ (alongside .asc signatures)"
+
 # ── Lint ───────────────────────────────────────────────────────────────
 
 .PHONY: lint
@@ -84,6 +100,8 @@ help:
 	@echo "  test-verbose   Run tests with verbose output"
 	@echo "  test-race      Run tests with race detector"
 	@echo "  test-cover     Run tests with coverage report"
+	@echo "  bench          Run benchmarks"
+	@echo "  sign           GPG-sign release binaries in bin/"
 	@echo "  lint           Run golangci-lint"
 	@echo "  clean          Remove build artifacts"
 	@echo "  install        Install binary to ~/.local/bin/"