Short-circuit `foostore fish` to skip backend initHEADv0.8.1master

The fish subcommand prints a purely static shell-integration script and
needs no backend, cipher, store, git, or shell.  Previously cli.New ran
in main() before dispatch, triggering the KeePass Argon2 KDF and adding
~1.8s to every interactive fish shell startup that sources the script.

Export FishIntegrationScript and dispatch `fish` directly from main()
before constructing the CLI.  Local timing: `foostore fish` drops from
~1.834s to ~0.003s.

Bump version to v0.8.1.

Amp-Thread-ID: https://ampcode.com/threads/T-019dd950-11ef-77aa-bb92-810f22601023
Co-authored-by: Amp <amp@ampcode.com>

3 files changed, 24 insertions, 4 deletions

diff --git a/cmd/foostore/main.go b/cmd/foostore/main.go
index 82283da..1e7a184 100644
--- a/cmd/foostore/main.go
+++ b/cmd/foostore/main.go
@@ -28,6 +28,20 @@ func main() {
 		os.Exit(0)
 	}
 
+	// Short-circuit the "fish" subcommand: it emits a purely static shell
+	// integration script and needs no backend, cipher, store, git, or shell
+	// initialisation.  Skipping cli.New avoids the KeePass Argon2 KDF cost
+	// (~1.8s), which makes every interactive fish shell startup that sources
+	// `foostore fish | source` correspondingly faster.
+	if len(args) == 1 && args[0] == "fish" {
+		binaryPath, err := os.Executable()
+		if err != nil {
+			binaryPath = "foostore"
+		}
+		fmt.Print(cli.FishIntegrationScript(binaryPath))
+		os.Exit(0)
+	}
+
 	// Cancel the context on SIGINT or SIGTERM so that long-running operations
 	// (fzf, external editors) terminate gracefully rather than being killed hard.
 	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
diff --git a/internal/cli/cli_fish.go b/internal/cli/cli_fish.go
index b2d3616..0590345 100644
--- a/internal/cli/cli_fish.go
+++ b/internal/cli/cli_fish.go
@@ -28,14 +28,14 @@ func (c *CLI) cmdFish(stdout io.Writer) int {
 	if err != nil {
 		binaryPath = "foostore"
 	}
-	script := fishIntegrationScript(binaryPath)
+	script := FishIntegrationScript(binaryPath)
 	if _, err := io.WriteString(stdout, script); err != nil {
 		return 1
 	}
 	return 0
 }
 
-// fishIntegrationScript returns the complete fish shell integration script for
+// FishIntegrationScript returns the complete fish shell integration script for
 // the given binary path.  The script combines the foostore completion rules and
 // the ge wrapper function so users need only source a single output:
 //
@@ -44,7 +44,13 @@ func (c *CLI) cmdFish(stdout io.Writer) int {
 // The binary name is extracted from binaryPath (basename without path) and used
 // wherever "foostore" appears in complete directives, making the script
 // correct even when the binary is renamed.
-func fishIntegrationScript(binaryPath string) string {
+//
+// This function is exported so cmd/foostore/main.go can short-circuit the
+// "fish" subcommand before constructing a CLI — the script is purely static
+// and needs no backend, cipher, store, git, or shell initialisation.  Avoiding
+// that init shaves ~1.8s (KeePass Argon2 KDF) off every interactive fish
+// shell startup that sources `foostore fish`.
+func FishIntegrationScript(binaryPath string) string {
 	bin := filepath.Base(binaryPath)
 	var b strings.Builder
 
diff --git a/internal/version/version.go b/internal/version/version.go
index d019841..0a0a258 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -2,4 +2,4 @@
 package version
 
 // Version is the current release version of foostore.
-const Version = "v0.7.0"
+const Version = "v0.8.1"