feat:Modify the location where version is obtained, and insert version information into the context (#1300)

* feat:migrate version info from internal package to pkg/config

* * fix lint issue

pkg/agent/context.go

@@ -12,6 +12,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/sipeed/picoclaw/pkg/config"
 	"github.com/sipeed/picoclaw/pkg/logger"
 	"github.com/sipeed/picoclaw/pkg/providers"
 	"github.com/sipeed/picoclaw/pkg/skills"
@@ -80,8 +81,10 @@ func NewContextBuilder(workspace string) *ContextBuilder {
 func (cb *ContextBuilder) getIdentity() string {
 	workspacePath, _ := filepath.Abs(filepath.Join(cb.workspace))
 	toolDiscovery := cb.getDiscoveryRule()
+	version := config.FormatVersion()
 
-	return fmt.Sprintf(`# picoclaw 🦞
+	return fmt.Sprintf(
+		`# picoclaw 🦞 (%s)
 
 You are picoclaw, a helpful AI assistant.
 
@@ -102,7 +105,7 @@ Your workspace is at: %s
 4. **Context summaries** - Conversation summaries provided as context are approximate references only. They may be incomplete or outdated. Always defer to explicit user instructions over summary content.
 
 %s`,
-		workspacePath, workspacePath, workspacePath, workspacePath, workspacePath, toolDiscovery)
+		version, workspacePath, workspacePath, workspacePath, workspacePath, workspacePath, toolDiscovery)
 }
 
 func (cb *ContextBuilder) getDiscoveryRule() string {

pkg/config/config.go

@@ -59,6 +59,16 @@ type Config struct {
 	Tools     ToolsConfig     `json:"tools"`
 	Heartbeat HeartbeatConfig `json:"heartbeat"`
 	Devices   DevicesConfig   `json:"devices"`
+	// BuildInfo contains build-time version information
+	BuildInfo BuildInfo `json:"build_info,omitempty"`
+}
+
+// BuildInfo contains build-time version information
+type BuildInfo struct {
+	Version   string `json:"version"`
+	GitCommit string `json:"git_commit"`
+	BuildTime string `json:"build_time"`
+	GoVersion string `json:"go_version"`
 }
 
 // MarshalJSON implements custom JSON marshaling for Config

pkg/config/defaults.go

@@ -510,5 +510,11 @@ func DefaultConfig() *Config {
 			Enabled:    false,
 			MonitorUSB: true,
 		},
+		BuildInfo: BuildInfo{
+			Version:   Version,
+			GitCommit: GitCommit,
+			BuildTime: BuildTime,
+			GoVersion: GoVersion,
+		},
 	}
 }

pkg/config/version.go

@@ -0,0 +1,44 @@
+package config
+
+import (
+	"fmt"
+	"runtime"
+)
+
+// Build-time variables injected via ldflags during build process.
+// These are set by the Makefile or .goreleaser.yaml using the -X flag:
+//
+//	-X github.com/sipeed/picoclaw/pkg/config.Version=<version>
+//	-X github.com/sipeed/picoclaw/pkg/config.GitCommit=<commit>
+//	-X github.com/sipeed/picoclaw/pkg/config.BuildTime=<timestamp>
+//	-X github.com/sipeed/picoclaw/pkg/config.GoVersion=<go-version>
+var (
+	Version   = "dev" // Default value when not built with ldflags
+	GitCommit string  // Git commit SHA (short)
+	BuildTime string  // Build timestamp in RFC3339 format
+	GoVersion string  // Go version used for building
+)
+
+// FormatVersion returns the version string with optional git commit
+func FormatVersion() string {
+	v := Version
+	if GitCommit != "" {
+		v += fmt.Sprintf(" (git: %s)", GitCommit)
+	}
+	return v
+}
+
+// FormatBuildInfo returns build time and go version info
+func FormatBuildInfo() (string, string) {
+	build := BuildTime
+	goVer := GoVersion
+	if goVer == "" {
+		goVer = runtime.Version()
+	}
+	return build, goVer
+}
+
+// GetVersion returns the version string
+func GetVersion() string {
+	return Version
+}

pkg/config/version_test.go

@@ -0,0 +1,92 @@
+package config
+
+import (
+	"runtime"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestFormatVersion_NoGitCommit(t *testing.T) {
+	oldVersion, oldGit := Version, GitCommit
+	t.Cleanup(func() { Version, GitCommit = oldVersion, oldGit })
+
+	Version = "1.2.3"
+	GitCommit = ""
+
+	assert.Equal(t, "1.2.3", FormatVersion())
+}
+
+func TestFormatVersion_WithGitCommit(t *testing.T) {
+	oldVersion, oldGit := Version, GitCommit
+	t.Cleanup(func() { Version, GitCommit = oldVersion, oldGit })
+
+	Version = "1.2.3"
+	GitCommit = "abc123"
+
+	assert.Equal(t, "1.2.3 (git: abc123)", FormatVersion())
+}
+
+func TestFormatBuildInfo_UsesBuildTimeAndGoVersion_WhenSet(t *testing.T) {
+	oldBuildTime, oldGoVersion := BuildTime, GoVersion
+	t.Cleanup(func() { BuildTime, GoVersion = oldBuildTime, oldGoVersion })
+
+	BuildTime = "2026-02-20T00:00:00Z"
+	GoVersion = "go1.23.0"
+
+	build, goVer := FormatBuildInfo()
+
+	assert.Equal(t, BuildTime, build)
+	assert.Equal(t, GoVersion, goVer)
+}
+
+func TestFormatBuildInfo_EmptyBuildTime_ReturnsEmptyBuild(t *testing.T) {
+	oldBuildTime, oldGoVersion := BuildTime, GoVersion
+	t.Cleanup(func() { BuildTime, GoVersion = oldBuildTime, oldGoVersion })
+
+	BuildTime = ""
+	GoVersion = "go1.23.0"
+
+	build, goVer := FormatBuildInfo()
+
+	assert.Empty(t, build)
+	assert.Equal(t, GoVersion, goVer)
+}
+
+func TestFormatBuildInfo_EmptyGoVersion_FallsBackToRuntimeVersion(t *testing.T) {
+	oldBuildTime, oldGoVersion := BuildTime, GoVersion
+	t.Cleanup(func() { BuildTime, GoVersion = oldBuildTime, oldGoVersion })
+
+	BuildTime = "x"
+	GoVersion = ""
+
+	build, goVer := FormatBuildInfo()
+
+	assert.Equal(t, "x", build)
+	assert.Equal(t, runtime.Version(), goVer)
+}
+
+func TestGetVersion(t *testing.T) {
+	oldVersion := Version
+	t.Cleanup(func() { Version = oldVersion })
+
+	Version = "dev"
+	assert.Equal(t, "dev", GetVersion())
+}
+
+func TestGetVersion_Custom(t *testing.T) {
+	oldVersion := Version
+	t.Cleanup(func() { Version = oldVersion })
+
+	Version = "v1.0.0"
+	assert.Equal(t, "v1.0.0", GetVersion())
+}
+
+func TestVersion_DefaultIsDev(t *testing.T) {
+	// Reset to default values
+	oldVersion := Version
+	Version = "dev"
+	t.Cleanup(func() { Version = oldVersion })
+
+	assert.Equal(t, "dev", Version)
+}