feat: add kt version command

.ktickets/kti-427f.md

@@ -0,0 +1,12 @@
+---
+id: kti-427f
+status: closed
+created: "2026-02-12T01:11:47Z"
+type: task
+priority: 2
+assignee: kostyay
+tests_passed: false
+---
+# Add tests for version command
+
+Test version command output in text and json modes

.ktickets/kti-4abf.md

@@ -0,0 +1,12 @@
+---
+id: kti-4abf
+status: closed
+created: "2026-02-12T01:11:43Z"
+type: task
+priority: 2
+assignee: kostyay
+tests_passed: false
+---
+# Add internal/version package
+
+Create internal/version/version.go with ldflags-injectable vars and dev fallbacks

.ktickets/kti-6f9c.md

@@ -0,0 +1,12 @@
+---
+id: kti-6f9c
+status: closed
+created: "2026-02-12T01:11:47Z"
+type: task
+priority: 2
+assignee: kostyay
+tests_passed: false
+---
+# Update Makefile build target with ldflags
+
+Inject Version/Commit/Date via ldflags in build target

.ktickets/kti-b9fc.md

@@ -0,0 +1,12 @@
+---
+id: kti-b9fc
+status: closed
+created: "2026-02-12T01:11:46Z"
+type: task
+priority: 2
+assignee: kostyay
+tests_passed: false
+---
+# Add kt version cobra command
+
+Add version.go command in internal/cmd that prints version info, supports --json

Makefile

@@ -1,5 +1,13 @@
 .PHONY: all fmt lint test build clean security install
 
+VERSION := $(shell git describe --tags --always --dirty)
+COMMIT  := $(shell git rev-parse --short HEAD)
+DATE    := $(shell date -u +%FT%TZ)
+LDFLAGS := -s -w \
+  -X 'github.com/kostyay/kticket/internal/version.Version=$(VERSION)' \
+  -X 'github.com/kostyay/kticket/internal/version.Commit=$(COMMIT)' \
+  -X 'github.com/kostyay/kticket/internal/version.Date=$(DATE)'
+
 all: lint test build
 
 fmt:
@@ -12,7 +20,7 @@ test:
 	go test -race -coverprofile=coverage.out ./...
 
 build:
-	go build -o kt ./cmd/kt
+	go build -ldflags "$(LDFLAGS)" -o kt ./cmd/kt
 
 clean:
 	rm -f kt coverage.out

docs/plans/2026-02-12-kt-version-design.md

@@ -0,0 +1,42 @@
+# kt version
+
+## Summary
+
+Add `kt version` command. Version derived from git tags at build time via `-ldflags`.
+
+## Vars
+
+Package: `internal/version/version.go`
+
+- `Version` — `git describe --tags --always --dirty`
+- `Commit` — short SHA
+- `Date` — build timestamp (UTC)
+
+Fallback when built without ldflags: `"dev"`.
+
+## Command
+
+`kt version` output:
+```
+kt v0.1.0-3-gabcdef (commit: abcdef, built: 2026-02-12T10:00:00Z)
+```
+
+`kt version --json`:
+```json
+{"version":"v0.1.0-3-gabcdef","commit":"abcdef","date":"2026-02-12T10:00:00Z"}
+```
+
+## Makefile
+
+```makefile
+VERSION := $(shell git describe --tags --always --dirty)
+COMMIT  := $(shell git rev-parse --short HEAD)
+DATE    := $(shell date -u +%FT%TZ)
+LDFLAGS := -s -w \
+  -X 'github.com/kostyay/kticket/internal/version.Version=$(VERSION)' \
+  -X 'github.com/kostyay/kticket/internal/version.Commit=$(COMMIT)' \
+  -X 'github.com/kostyay/kticket/internal/version.Date=$(DATE)'
+
+build:
+	go build -ldflags "$(LDFLAGS)" -o kt ./cmd/kt
+```

internal/cmd/version.go

@@ -0,0 +1,28 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/kostyay/kticket/internal/version"
+	"github.com/spf13/cobra"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print kt version",
+	Run: func(cmd *cobra.Command, args []string) {
+		if IsJSON() {
+			_ = PrintJSON(map[string]string{
+				"version": version.Version,
+				"commit":  version.Commit,
+				"date":    version.Date,
+			})
+			return
+		}
+		fmt.Printf("kt %s (commit: %s, built: %s)\n", version.Version, version.Commit, version.Date)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}

internal/cmd/version_test.go

@@ -0,0 +1,71 @@
+package cmd
+
+import (
+	"bytes"
+	"encoding/json"
+	"testing"
+
+	"github.com/kostyay/kticket/internal/version"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestRunVersion(t *testing.T) {
+	// Set known values
+	version.Version = "v0.1.0-test"
+	version.Commit = "abc1234"
+	version.Date = "2026-02-12T00:00:00Z"
+
+	buf := new(bytes.Buffer)
+	rootCmd.SetOut(buf)
+	rootCmd.SetArgs([]string{"version"})
+	err := rootCmd.Execute()
+	require.NoError(t, err)
+}
+
+func TestRunVersionJSON(t *testing.T) {
+	defer setupTestEnv(t)()
+	jsonFlag = true
+	defer func() { jsonFlag = false }()
+
+	version.Version = "v0.1.0-test"
+	version.Commit = "abc1234"
+	version.Date = "2026-02-12T00:00:00Z"
+
+	buf := new(bytes.Buffer)
+	rootCmd.SetOut(buf)
+	rootCmd.SetArgs([]string{"version", "--json"})
+	err := rootCmd.Execute()
+	require.NoError(t, err)
+}
+
+func TestVersionDefaults(t *testing.T) {
+	// Reset to defaults
+	version.Version = "dev"
+	version.Commit = "unknown"
+	version.Date = "unknown"
+
+	assert.Equal(t, "dev", version.Version)
+	assert.Equal(t, "unknown", version.Commit)
+	assert.Equal(t, "unknown", version.Date)
+}
+
+func TestVersionJSONStructure(t *testing.T) {
+	version.Version = "v1.0.0"
+	version.Commit = "deadbeef"
+	version.Date = "2026-02-12T10:00:00Z"
+
+	data := map[string]string{
+		"version": version.Version,
+		"commit":  version.Commit,
+		"date":    version.Date,
+	}
+	b, err := json.Marshal(data)
+	require.NoError(t, err)
+
+	var parsed map[string]string
+	require.NoError(t, json.Unmarshal(b, &parsed))
+	assert.Equal(t, "v1.0.0", parsed["version"])
+	assert.Equal(t, "deadbeef", parsed["commit"])
+	assert.Equal(t, "2026-02-12T10:00:00Z", parsed["date"])
+}

internal/version/version.go

@@ -0,0 +1,8 @@
+package version
+
+// Overridden via -ldflags at build time.
+var (
+	Version = "dev"
+	Commit  = "unknown"
+	Date    = "unknown"
+)