fix(cli): add upgrade logic to install script

When multica CLI is already installed, the install script now checks
for a newer version on GitHub Releases and upgrades automatically.
Homebrew installs use `brew upgrade`; binary installs re-download
the latest release. If already up to date, it skips.

.goreleaser.yml

@@ -11,7 +11,6 @@ builds:
       - -s -w
       - -X main.version={{.Version}}
       - -X main.commit={{.ShortCommit}}
-      - -X main.date={{.Date}}
     env:
       - CGO_ENABLED=0
     goos:

Makefile

@@ -190,11 +190,10 @@ multica:
 
 VERSION ?= $(shell git describe --tags --always --dirty 2>/dev/null || echo dev)
 COMMIT  ?= $(shell git rev-parse --short HEAD 2>/dev/null || echo unknown)
-DATE    ?= $(shell date -u '+%Y-%m-%dT%H:%M:%SZ')
 
 build:
 	cd server && go build -o bin/server ./cmd/server
-	cd server && go build -ldflags "-X main.version=$(VERSION) -X main.commit=$(COMMIT) -X main.date=$(DATE)" -o bin/multica ./cmd/multica
+	cd server && go build -ldflags "-X main.version=$(VERSION) -X main.commit=$(COMMIT)" -o bin/multica ./cmd/multica
 	cd server && go build -o bin/migrate ./cmd/migrate
 
 test:

SELF_HOSTING.md

@@ -123,24 +123,6 @@ make selfhost-stop
 multica daemon stop
 ```
 
-## Switching to Multica Cloud
-
-If you've been self-hosting and want to switch your CLI to [Multica Cloud](https://multica.ai):
-
-```bash
-multica config set server_url https://api.multica.ai
-multica config set app_url https://multica.ai
-multica login
-```
-
-Or re-run the install script without `--local` — it will reconfigure the CLI automatically:
-
-```bash
-curl -fsSL https://raw.githubusercontent.com/multica-ai/multica/main/scripts/install.sh | bash
-```
-
-> Your local Docker services are unaffected. Stop them separately if you no longer need them.
-
 ## Rebuilding After Updates
 
 ```bash

apps/docs/content/docs/getting-started/self-hosting.mdx

@@ -118,26 +118,6 @@ make selfhost-stop
 multica daemon stop
 ```
 
-## Switching to Multica Cloud
-
-If you've been self-hosting and want to switch your CLI to [Multica Cloud](https://multica.ai):
-
-```bash
-multica config set server_url https://api.multica.ai
-multica config set app_url https://multica.ai
-multica login
-```
-
-Or re-run the install script without `--local` — it will reconfigure the CLI automatically:
-
-```bash
-curl -fsSL https://raw.githubusercontent.com/multica-ai/multica/main/scripts/install.sh | bash
-```
-
-<Callout>
-Your local Docker services are unaffected. Stop them separately if you no longer need them.
-</Callout>
-
 ## Rebuilding After Updates
 
 ```bash

scripts/install.sh

@@ -13,7 +13,6 @@ set -euo pipefail
 # Configuration
 # ---------------------------------------------------------------------------
 REPO_URL="https://github.com/multica-ai/multica.git"
-REPO_WEB_URL="https://github.com/multica-ai/multica"  # without .git, for GitHub web APIs
 INSTALL_DIR="${MULTICA_INSTALL_DIR:-$HOME/.multica/server}"
 BREW_PACKAGE="multica-ai/tap/multica"
 
@@ -63,16 +62,10 @@ install_cli_brew() {
   if ! brew tap multica-ai/tap 2>/dev/null; then
     fail "Failed to add Homebrew tap. Check your network connection."
   fi
-  # brew install exits non-zero if already installed on older Homebrew versions
   if ! brew install multica 2>/dev/null; then
-    if brew list multica >/dev/null 2>&1; then
-      ok "Multica CLI already installed via Homebrew"
-    else
-      fail "Failed to install multica via Homebrew."
-    fi
-  else
-    ok "Multica CLI installed via Homebrew"
+    fail "Failed to install multica via Homebrew."
   fi
+  ok "Multica CLI installed via Homebrew"
 }
 
 install_cli_binary() {
@@ -80,7 +73,7 @@ install_cli_binary() {
 
   # Get latest release tag
   local latest
-  latest=$(curl -sI "$REPO_WEB_URL/releases/latest" 2>/dev/null | grep -i '^location:' | sed 's/.*tag\///' | tr -d '\r\n' || true)
+  latest=$(curl -sI "$REPO_URL/releases/latest" | grep -i '^location:' | sed 's/.*tag\///' | tr -d '\r\n')
   if [ -z "$latest" ]; then
     fail "Could not determine latest release. Check your network connection."
   fi
@@ -130,8 +123,7 @@ add_to_path() {
 }
 
 get_latest_version() {
-  # grep exits 1 when no match; use `|| true` to avoid triggering pipefail
-  curl -sI "$REPO_WEB_URL/releases/latest" 2>/dev/null | grep -i '^location:' | sed 's/.*tag\///' | tr -d '\r\n' || true
+  curl -sI "$REPO_URL/releases/latest" 2>/dev/null | grep -i '^location:' | sed 's/.*tag\///' | tr -d '\r\n'
 }
 
 upgrade_cli_brew() {
@@ -148,8 +140,7 @@ upgrade_cli_brew() {
 install_cli() {
   if command_exists multica; then
     local current_ver
-    # `multica version` outputs "multica v0.1.13 (commit: abc1234)" — extract just the version
-    current_ver=$(multica version 2>/dev/null | awk '{print $2}' || echo "unknown")
+    current_ver=$(multica version 2>/dev/null || echo "unknown")
 
     local latest_ver
     latest_ver=$(get_latest_version)
@@ -171,7 +162,7 @@ install_cli() {
     fi
 
     local new_ver
-    new_ver=$(multica version 2>/dev/null | awk '{print $2}' || echo "unknown")
+    new_ver=$(multica version 2>/dev/null || echo "unknown")
     ok "Multica CLI upgraded ($current_ver → $new_ver)"
     return 0
   fi
@@ -226,11 +217,6 @@ setup_server() {
     if ! command_exists git; then
       fail "Git is not installed. Please install git and re-run."
     fi
-    # Remove leftover directory from a previously interrupted clone
-    if [ -d "$INSTALL_DIR" ]; then
-      warn "Removing incomplete installation at $INSTALL_DIR..."
-      rm -rf "$INSTALL_DIR"
-    fi
     mkdir -p "$(dirname "$INSTALL_DIR")"
     git clone --depth 1 "$REPO_URL" "$INSTALL_DIR"
     cd "$INSTALL_DIR"

server/cmd/multica/cmd_update.go

@@ -17,7 +17,7 @@ var updateCmd = &cobra.Command{
 }
 
 func runUpdate(_ *cobra.Command, _ []string) error {
-	fmt.Fprintf(os.Stderr, "Current version: %s (commit: %s, built: %s)\n", version, commit, date)
+	fmt.Fprintf(os.Stderr, "Current version: %s (commit: %s)\n", version, commit)
 
 	// Check latest version from GitHub.
 	latest, err := cli.FetchLatestRelease()

server/cmd/multica/cmd_version.go

@@ -1,42 +1,15 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
-	"os"
-	"runtime"
 
 	"github.com/spf13/cobra"
 )
 
-func init() {
-	versionCmd.Flags().String("output", "text", "Output format: text or json")
-}
-
 var versionCmd = &cobra.Command{
 	Use:   "version",
 	Short: "Print version information",
-	RunE:  runVersion,
-}
-
-func runVersion(cmd *cobra.Command, _ []string) error {
-	output, _ := cmd.Flags().GetString("output")
-
-	if output == "json" {
-		info := map[string]string{
-			"version":   version,
-			"commit":    commit,
-			"date":      date,
-			"go":        runtime.Version(),
-			"os":        runtime.GOOS,
-			"arch":      runtime.GOARCH,
-		}
-		enc := json.NewEncoder(os.Stdout)
-		enc.SetIndent("", "  ")
-		return enc.Encode(info)
-	}
-
-	fmt.Printf("multica %s (commit: %s, built: %s)\n", version, commit, date)
-	fmt.Printf("go: %s, os/arch: %s/%s\n", runtime.Version(), runtime.GOOS, runtime.GOARCH)
-	return nil
+	Run: func(_ *cobra.Command, _ []string) {
+		fmt.Printf("multica %s (commit: %s)\n", version, commit)
+	},
 }

server/cmd/multica/main.go

@@ -10,7 +10,6 @@ import (
 var (
 	version = "dev"
 	commit  = "unknown"
-	date    = "unknown"
 )
 
 var rootCmd = &cobra.Command{