v1.01: replace bcrypt with PBKDF2-SHA256; update README and DESIGN docsv1.01

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 826647b..bf3cbff 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,5 +4,4 @@ gem 'sinatra',       '~> 4.0'
 gem 'puma',          '~> 6.4'
 gem 'mini_magick',   '~> 4.12'
 gem 'mini_exiftool', '~> 2.10'
-gem 'bcrypt',        '~> 3.1'
 gem 'rack-session',  '~> 2.0'