Implement auto-upgrade for outdated database schemas

Author: andrew

CHANGELOG.md

@@ -1,5 +1,7 @@
 ## [Unreleased]
 
+- Auto-upgrade outdated database schemas instead of erroring
+
 ## [0.9.0] - 2026-01-14
 
 - `git pkgs sbom` command to export dependencies as SPDX or CycloneDX

lib/git/pkgs/database.rb

@@ -295,7 +295,10 @@ def self.check_version!
         return unless needs_upgrade?
 
         stored = stored_version || 0
-        raise SchemaVersionError, "Database schema is v#{stored}, expected v#{SCHEMA_VERSION}. Run 'git pkgs upgrade' to rebuild."
+        puts "Upgrading database schema v#{stored} → v#{SCHEMA_VERSION}..." unless Git::Pkgs.quiet
+
+        disconnect
+        Commands::Init.new(["--force"]).run
       end
 
       # Legacy migration kept for reference, no longer used.

test/git/pkgs/test_database.rb

@@ -75,17 +75,21 @@ def test_needs_upgrade_returns_false_for_current_schema
     refute Git::Pkgs::Database.needs_upgrade?
   end
 
-  def test_check_version_raises_for_old_schema
+  def test_check_version_auto_upgrades_old_schema
     Git::Pkgs::Database.connect(@git_dir, check_version: false)
     Git::Pkgs::Database.create_schema
     Git::Pkgs::Database.set_version(1)
 
     assert Git::Pkgs::Database.needs_upgrade?
-    error = assert_raises(Git::Pkgs::SchemaVersionError) do
+
+    Dir.chdir(@test_dir) do
+      Git::Pkgs.quiet = true
       Git::Pkgs::Database.check_version!
+      Git::Pkgs.quiet = false
     end
-    assert_match(/v1.*v#{Git::Pkgs::Database::SCHEMA_VERSION}/, error.message)
-    assert_match(/git pkgs upgrade/, error.message)
+
+    assert_equal Git::Pkgs::Database::SCHEMA_VERSION, Git::Pkgs::Database.stored_version
+    refute Git::Pkgs::Database.needs_upgrade?
   end
 
   def test_create_schema_creates_vuln_tables