Stage 5 fixes: RouteWithParams removal, Globalize fallbacks, search stub, to_s(:db) → to_fs(:db), LockedByAnotherUser autoload, test environment config

- Remove safe_path helper and content_path shim from link_helper.rb
- Update all safe_path call sites in views to use named route helpers directly
- Fix Globalize fallbacks via config.i18n.fallbacks in application.rb, remove i18n initializer
- Stub Node.search returning none (search disabled pending PostgreSQL upgrade)
- Replace to_s(:db) with to_fs(:db) in node.rb, nodes_helper.rb, link_helper.rb, admin view
- Move LockedByAnotherUser to app/models/locked_by_another_user.rb for Zeitwerk autoloading
- Fix config/environments/test.rb: config.assets removed, cache_classes → enable_reloading,
  test_order removed, minitest pinned to ~> 5.25
- Fix config/environments/development.rb: cache_classes → enable_reloading
- Park search vector migration in doc/ pending PostgreSQL and plpgsql availability

1 files changed, 3 insertions, 4 deletions

diff --git a/Gemfile.lock b/Gemfile.lock
index 357998d..9d5ec90 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -157,9 +157,7 @@ GEM
     marcel (1.2.1)
     mini_mime (1.1.5)
     mini_portile2 (2.8.9)
-    minitest (6.0.6)
-      drb (~> 2.0)
-      prism (~> 1.5)
+    minitest (5.27.0)
     net-imap (0.6.4.1)
       date
       net-protocol
@@ -323,6 +321,7 @@ DEPENDENCIES
   globalize (~> 7.0)
   jquery-rails
   libxml-ruby (~> 5.0)
+  minitest (~> 5.25)
   nokogiri (~> 1.18)
   pg (~> 1.4.6)
   puma
@@ -394,7 +393,7 @@ CHECKSUMS
   marcel (1.2.1) sha256=1678e9360e32f9eafa917c80029e2f6d10b2715c66a4b87b6d0da9b9cd1f859f
   mini_mime (1.1.5) sha256=8681b7e2e4215f2a159f9400b5816d85e9d8c6c6b491e96a12797e798f8bccef
   mini_portile2 (2.8.9) sha256=0cd7c7f824e010c072e33f68bc02d85a00aeb6fce05bb4819c03dfd3c140c289
-  minitest (6.0.6) sha256=153ea36d1d987a62942382b61075745042a2b3123b1cd48f4c3675af9cc7d6f1
+  minitest (5.27.0) sha256=2d3b17f8a36fe7801c1adcffdbc38233b938eb0b4966e97a6739055a45fa77d5
   net-imap (0.6.4.1) sha256=29f0360d75a7efd3539f16ac1957dea5c0a51ddeceb348db4553c3120914ea0d
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8