fix: inject version via ldflags instead of hardcoded const

Replace `const version = "0.1.0"` with `var version = "dev"` injectable
via `-ldflags -X`. Add version injection in Makefile (git describe) and
.goreleaser.yaml ({{ .Version }}). Add regression tests for --version
passthrough after command name.

Closes #17

Author: edouard-claude

.goreleaser.yaml

@@ -6,6 +6,8 @@ gomod:
 builds:
   - main: ./cmd/snip
     binary: snip
+    ldflags:
+      - -s -w -X github.com/edouard-claude/snip/internal/cli.version={{ .Version }}
     env:
       - CGO_ENABLED=0
     goos:

Makefile

@@ -2,7 +2,8 @@
 
 BINARY=snip
 BUILD_DIR=cmd/snip
-LDFLAGS=-ldflags="-s -w"
+VERSION=$(shell git describe --tags --always 2>/dev/null | sed 's/^v//' || echo dev)
+LDFLAGS=-ldflags="-s -w -X 'github.com/edouard-claude/snip/internal/cli.version=$(VERSION)'"
 
 build:
 	CGO_ENABLED=0 go build -o $(BINARY) $(LDFLAGS) ./$(BUILD_DIR)

internal/cli/cli.go

@@ -14,7 +14,8 @@ import (
 	"github.com/edouard-claude/snip/internal/tracking"
 )
 
-const version = "0.1.0"
+// version is set at build time via -ldflags "-X ...". Do not reassign.
+var version = "dev"
 
 // Run is the main entry point. Returns exit code.
 func Run(args []string) int {

internal/cli/flags_test.go

@@ -48,6 +48,18 @@ func TestParseFlags(t *testing.T) {
 			wantFlags: Flags{Help: true},
 			wantArgs:  nil,
 		},
+		{
+			name:      "version after command is passed through",
+			args:      []string{"bun", "--version"},
+			wantFlags: Flags{},
+			wantArgs:  []string{"bun", "--version"},
+		},
+		{
+			name:      "global flags with version after command",
+			args:      []string{"-v", "go", "--version"},
+			wantFlags: Flags{Verbose: 1},
+			wantArgs:  []string{"go", "--version"},
+		},
 		{
 			name:      "built-in command help is preserved",
 			args:      []string{"proxy", "--help"},