feat(cli): add git commit hash to version output

Users can now see the exact git commit used to build the binary,
which helps with debugging and deployment tracking.

Author: yinwm

Makefile

@@ -8,9 +8,10 @@ MAIN_GO=$(CMD_DIR)/main.go
 
 # Version
 VERSION?=$(shell git describe --tags --always --dirty 2>/dev/null || echo "dev")
+GIT_COMMIT=$(shell git rev-parse --short=8 HEAD 2>/dev/null || echo "unknown")
 BUILD_TIME=$(shell date +%FT%T%z)
 GO_VERSION=$(shell $(GO) version | awk '{print $$3}')
-LDFLAGS=-ldflags "-X main.version=$(VERSION) -X main.buildTime=$(BUILD_TIME) -X main.goVersion=$(GO_VERSION)"
+LDFLAGS=-ldflags "-X main.version=$(VERSION) -X main.gitCommit=$(GIT_COMMIT) -X main.buildTime=$(BUILD_TIME) -X main.goVersion=$(GO_VERSION)"
 
 # Go variables
 GO?=go

cmd/picoclaw/main.go

@@ -35,15 +35,20 @@ import (
 )
 
 var (
-	version   = "dev"
-	buildTime string
-	goVersion string
+	version    = "dev"
+	gitCommit  string
+	buildTime  string
+	goVersion  string
 )
 
 const logo = "🦞"
 
 func printVersion() {
-	fmt.Printf("%s picoclaw %s\n", logo, version)
+	fmt.Printf("%s picoclaw %s", logo, version)
+	if gitCommit != "" {
+		fmt.Printf(" (git: %s)", gitCommit)
+	}
+	fmt.Println()
 	if buildTime != "" {
 		fmt.Printf("  Build: %s\n", buildTime)
 	}
@@ -760,7 +765,16 @@ func statusCmd() {
 
 	configPath := getConfigPath()
 
-	fmt.Printf("%s picoclaw Status\n\n", logo)
+	fmt.Printf("%s picoclaw Status\n", logo)
+	fmt.Printf("Version: %s", version)
+	if gitCommit != "" {
+		fmt.Printf(" (git: %s)", gitCommit)
+	}
+	fmt.Println()
+	if buildTime != "" {
+		fmt.Printf("Build: %s\n", buildTime)
+	}
+	fmt.Println()
 
 	if _, err := os.Stat(configPath); err == nil {
 		fmt.Println("Config:", configPath, "✓")