Add author/homepage/license to version + banner; date format fixes

- globals.go: add Homepage and License constants.
- version command: show author, homepage, license, build date.
- Startup banner reformatted to:
    vaultik X by Author (commit Y, built on Z) starting up at T.
    https://sneak.berlin/go/vaultik
- Commit date now formatted as YYYY-MM-DD (called "build date" in
  user-facing output, since the binary was at least compiled once on
  the date of commit). Makefile/Dockerfile use git --format=%cs.
  goreleaser slices its RFC3339 .CommitDate template var to 10 chars.

.goreleaser.yaml

@@ -22,7 +22,7 @@ builds:
       - -s -w
       - -X 'sneak.berlin/go/vaultik/internal/globals.Version={{ .Version }}'
       - -X 'sneak.berlin/go/vaultik/internal/globals.Commit={{ .Commit }}'
-      - -X 'sneak.berlin/go/vaultik/internal/globals.CommitDate={{ .CommitDate }}'
+      - -X 'sneak.berlin/go/vaultik/internal/globals.CommitDate={{ slice .CommitDate 0 10 }}'
 
 archives:
   - id: default

Dockerfile

@@ -42,7 +42,7 @@ COPY . .
 RUN make test
 
 # Build (pure Go, no CGO required since we use modernc.org/sqlite)
-RUN CGO_ENABLED=0 go build -ldflags "-X 'sneak.berlin/go/vaultik/internal/globals.Version=${VERSION}' -X 'sneak.berlin/go/vaultik/internal/globals.Commit=$(git rev-parse HEAD 2>/dev/null || echo unknown)' -X 'sneak.berlin/go/vaultik/internal/globals.CommitDate=$(git show -s --format=%cI HEAD 2>/dev/null || echo unknown)'" -o /vaultik ./cmd/vaultik
+RUN CGO_ENABLED=0 go build -ldflags "-X 'sneak.berlin/go/vaultik/internal/globals.Version=${VERSION}' -X 'sneak.berlin/go/vaultik/internal/globals.Commit=$(git rev-parse HEAD 2>/dev/null || echo unknown)' -X 'sneak.berlin/go/vaultik/internal/globals.CommitDate=$(git show -s --format=%cs HEAD 2>/dev/null || echo unknown)'" -o /vaultik ./cmd/vaultik
 
 # Runtime stage
 # alpine:3.21, 2026-02-25

Makefile

@@ -5,7 +5,7 @@ VERSION := 1.0.0-rc.1
 
 # Build variables
 GIT_REVISION := $(shell git rev-parse HEAD 2>/dev/null || echo "unknown")
-GIT_COMMIT_DATE := $(shell git show -s --format=%cI HEAD 2>/dev/null || echo "unknown")
+GIT_COMMIT_DATE := $(shell git show -s --format=%cs HEAD 2>/dev/null || echo "unknown")
 
 # Linker flags
 LDFLAGS := -X 'sneak.berlin/go/vaultik/internal/globals.Version=$(VERSION)' \

internal/cli/app.go

@@ -46,9 +46,11 @@ func setupGlobals(lc fx.Lifecycle, g *globals.Globals, v *vaultik.Vaultik, opts
 				// user-facing output is suppressed.
 				v.UI = ui.NewWithColor(io.Discard, false)
 			} else {
-				v.UI.Banner("%s %s (commit %s, %s) invoked at %s by %s",
-					g.Appname, g.Version, g.ShortCommit(), g.CommitDate,
-					g.StartTime.Format(time.RFC3339), globals.Author)
+				v.UI.Banner("%s %s by %s (commit %s, built on %s) starting up at %s.",
+					g.Appname, g.Version, globals.Author,
+					g.ShortCommit(), g.CommitDate,
+					g.StartTime.Format(time.RFC3339))
+				v.UI.Banner("%s", globals.Homepage)
 			}
 			return nil
 		},

internal/cli/version.go

@@ -17,9 +17,13 @@ func NewVersionCommand() *cobra.Command {
 		Args:  cobra.NoArgs,
 		Run: func(cmd *cobra.Command, args []string) {
 			fmt.Printf("vaultik %s\n", globals.Version)
-			fmt.Printf("  commit:  %s\n", globals.Commit)
-			fmt.Printf("  go:      %s\n", runtime.Version())
-			fmt.Printf("  os/arch: %s/%s\n", runtime.GOOS, runtime.GOARCH)
+			fmt.Printf("  commit:     %s\n", globals.Commit)
+			fmt.Printf("  build date: %s\n", globals.CommitDate)
+			fmt.Printf("  go:         %s\n", runtime.Version())
+			fmt.Printf("  os/arch:    %s/%s\n", runtime.GOOS, runtime.GOARCH)
+			fmt.Printf("  author:     %s\n", globals.Author)
+			fmt.Printf("  homepage:   %s\n", globals.Homepage)
+			fmt.Printf("  license:    %s\n", globals.License)
 			if globals.Version == "dev" {
 				fmt.Println()
 				fmt.Println("This is a development build (no version information embedded).")

internal/globals/globals.go

@@ -19,6 +19,12 @@ var CommitDate string = "unknown"
 // Author identifies the upstream author of vaultik.
 const Author = "Jeffrey Paul <sneak@sneak.berlin>"
 
+// Homepage is the canonical URL for vaultik.
+const Homepage = "https://sneak.berlin/go/vaultik"
+
+// License is the SPDX identifier for the project license.
+const License = "MIT"
+
 // Globals contains application-wide configuration and metadata.
 type Globals struct {
 	Appname    string