Initial implementation of pluginctl CLI tool

- Add comprehensive info command with plugin manifest parsing -
Implement global --plugin-path flag and PLUGINCTL_PLUGIN_PATH env var -
Add full test suite with fixtures for various plugin configurations -
Set up build system with Makefile, goreleaser, and golangci-lint -
Include development tools with pinned versions for reproducible builds

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Makefile

@@ -0,0 +1,159 @@
+# pluginctl Makefile
+# Based on common Go project patterns
+
+# Build information
+VERSION ?= $(shell git describe --tags --always --dirty)
+COMMIT ?= $(shell git rev-parse --short HEAD)
+BUILD_DATE ?= $(shell date -u +"%Y-%m-%dT%H:%M:%SZ")
+
+# Go build variables
+GO_VERSION ?= $(shell awk '/^go / {print $$2}' go.mod)
+GOOS ?= $(shell go env GOOS)
+GOARCH ?= $(shell go env GOARCH)
+
+# Tool versions
+GOLANGCI_LINT_VERSION ?= v1.62.2
+GORELEASER_VERSION ?= v2.10.2
+
+# Project variables
+BINARY_NAME = pluginctl
+MAIN_PACKAGE = ./cmd/pluginctl
+DIST_DIR = dist
+
+# Build flags
+LDFLAGS = -ldflags="-s -w -X main.version=$(VERSION) -X main.commit=$(COMMIT) -X main.date=$(BUILD_DATE)"
+
+# Default target
+.PHONY: all
+all: clean lint test build
+
+# Help target
+.PHONY: help
+help: ## Show this help message
+	@echo "Available targets:"
+	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_-]+:.*?## / {printf "  %-20s %s\n", $$1, $$2}' $(MAKEFILE_LIST)
+
+# Clean build artifacts
+.PHONY: clean
+clean: ## Clean build artifacts
+	@echo "Cleaning build artifacts..."
+	@rm -rf $(DIST_DIR)
+	@rm -f $(BINARY_NAME)
+	@go clean -cache
+
+# Install dependencies
+.PHONY: deps
+deps: ## Install/update dependencies
+	@echo "Installing dependencies..."
+	@go mod download
+	@go mod tidy
+
+# Run tests
+.PHONY: test
+test: ## Run tests
+	@echo "Running tests..."
+	@go test -v ./...
+
+# Run tests with coverage
+.PHONY: test-coverage
+test-coverage: ## Run tests with coverage
+	@echo "Running tests with coverage..."
+	@go test -v -coverprofile=coverage.out ./...
+	@go tool cover -html=coverage.out -o coverage.html
+	@echo "Coverage report generated: coverage.html"
+
+# Lint code
+.PHONY: lint
+lint: ## Run linter
+	@echo "Running linter..."
+	@golangci-lint run
+
+# Fix linting issues
+.PHONY: lint-fix
+lint-fix: ## Fix linting issues
+	@echo "Fixing linting issues..."
+	@golangci-lint run --fix
+
+# Build for all platforms using goreleaser
+.PHONY: build-all
+build: clean ## Build for all platforms using goreleaser
+	@echo "Building for all platforms using goreleaser..."
+	@goreleaser build --clean
+
+# Install binary
+.PHONY: install
+install:
+	@echo "Installing $(BINARY_NAME)..."
+	@go install $(LDFLAGS) $(MAIN_PACKAGE)
+
+# Run the application
+.PHONY: run
+run: ## Run the application
+	@go run $(MAIN_PACKAGE) $(ARGS)
+
+# Format code
+.PHONY: fmt
+fmt: ## Format code
+	@echo "Formatting code..."
+	@go fmt ./...
+
+# Generate code
+.PHONY: generate
+generate: ## Generate code
+	@echo "Generating code..."
+	@go generate ./...
+
+# Check for updates
+.PHONY: check-updates
+check-updates: ## Check for dependency updates
+	@echo "Checking for dependency updates..."
+	@go list -u -m all
+
+# Release (requires goreleaser)
+.PHONY: release
+release: ## Create a release
+	@echo "Creating release..."
+	@goreleaser release --clean
+
+# Snapshot release (for testing)
+.PHONY: snapshot
+snapshot: ## Create a snapshot release
+	@echo "Creating snapshot release..."
+	@goreleaser release --snapshot --clean
+
+# Development setup
+.PHONY: dev-setup
+dev-setup: ## Set up development environment
+	@echo "Setting up development environment..."
+	@go get -tool github.com/golangci/golangci-lint/cmd/golangci-lint@$(GOLANGCI_LINT_VERSION)
+	@go get -tool github.com/goreleaser/goreleaser/v2@$(GORELEASER_VERSION)
+	@echo "Development tools installed"
+
+# Verify build
+.PHONY: verify
+verify: clean lint test build ## Verify build (clean, lint, test, build)
+	@echo "Build verification complete"
+
+# Quick development build
+.PHONY: dev
+dev: fmt lint build ## Quick development build (fmt, lint, build)
+
+# Check changes target
+.PHONY: check-changes
+check-changes: lint test ## Check changes (lint, test)
+
+# CI target
+.PHONY: ci
+ci: deps verify ## CI target (deps, verify)
+
+# Print build info
+.PHONY: version
+version: ## Print version information
+	@echo "Version: $(VERSION)"
+	@echo "Commit: $(COMMIT)"
+	@echo "Build Date: $(BUILD_DATE)"
+	@echo "Go Version: $(GO_VERSION)"
+	@echo "OS/Arch: $(GOOS)/$(GOARCH)"
+	@echo "Tool Versions:"
+	@echo "  golangci-lint: $(GOLANGCI_LINT_VERSION)"
+	@echo "  goreleaser: $(GORELEASER_VERSION)"