diff --git a/.devcontainer/Dockerfile.devcontainer b/.devcontainer/Dockerfile.devcontainer
index 1af34197..a088c0b8 100644
--- a/.devcontainer/Dockerfile.devcontainer
+++ b/.devcontainer/Dockerfile.devcontainer
@@ -1,18 +1,22 @@
 # Primary image
-FROM mcr.microsoft.com/devcontainers/ruby:1-3.2-bookworm
+FROM mcr.microsoft.com/devcontainers/base:debian-12
 
 # apt caching & install packages
-RUN rm -f /etc/apt/apt.conf.d/docker-clean; \
+RUN rm -f /etc/apt/apt.conf.d/docker-clean && \
     echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
-RUN \
-    --mount=type=cache,target=/var/cache/apt,sharing=locked \
+
+RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
     apt-get update && \
-    apt-get install --no-install-recommends --no-install-suggests -y \
+    apt-get install --no-install-recommends --no-install-suggests -qqy \
+    libicu-dev \
+    abiword \
     autoconf \
     build-essential \
     ca-certificates \
     curl \
+    ffmpeg \
+    ffmpegthumbnailer \
     gnupg \
     iputils-ping \
     libblas-dev \
@@ -25,18 +29,18 @@ RUN \
     libncurses5-dev \
     libpq-dev \
     libreadline6-dev \
+    libreoffice \
+    libsqlite3-dev \
     libssl-dev \
     libvips42 \
     libyaml-dev \
     patch \
-    uuid-dev \
-    zlib1g-dev \
-    watchman \
-    ffmpeg \
-    ffmpegthumbnailer \
-    abiword \
     pdftohtml \
-    libreoffice
+    pkg-config \
+    rustc \
+    uuid-dev \
+    watchman \
+    zlib1g-dev
 
 # Install postgres 15 client
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
@@ -44,8 +48,8 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     sudo install -d /usr/share/postgresql-common/pgdg && \
     curl -o /usr/share/postgresql-common/pgdg/apt.postgresql.org.asc --fail https://www.postgresql.org/media/keys/ACCC4CF8.asc && \
     sh -c 'echo "deb [signed-by=/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc] https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list' && \
-    apt update && \
-    apt-get install --no-install-recommends --no-install-suggests -y \
+    sudo apt update && \
+    sudo apt-get install --no-install-recommends --no-install-suggests -qqy \
     postgresql-client-15
 
 # Install & configure delta diff tool
@@ -63,22 +67,36 @@ RUN git config --system core.pager "delta" && \
     git config --system diff.algorithm "histogram" && \
     git config --system diff.colorMoved "default"
 
+# Install ruby
+USER vscode
+RUN git clone https://github.com/rbenv/rbenv.git ~/.rbenv
+ENV PATH="/home/vscode/.rbenv/bin:/home/vscode/.rbenv/shims:$PATH"
+RUN echo 'eval "$(rbenv init - --no-rehash bash)"' >> ~/.bashrc
+RUN git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build
+RUN rbenv install 3.4.4 && \
+    rbenv global 3.4.4
+
 ENV RAILS_ENV development
 
-# [Optional] Uncomment this line to install additional gems.
-RUN su vscode -c "gem install bundler -v '2.5.6'" && \
-    su vscode -c "gem install rake -v '13.0.6'" && \
-    su vscode -c "gem install ruby-lsp -v '0.22.1'"
+# Pre install gems to speed up container startup
+USER root
+RUN mkdir -p /tmp/bundle-install-cache && \
+    chown -R vscode:vscode /tmp/bundle-install-cache
+WORKDIR /tmp/bundle-install-cache
+USER vscode
+COPY Gemfile.lock Gemfile ./
+COPY gems/has_aux_table ./gems/has_aux_table
+RUN BUNDLE_FROZEN=true MAKE="make -j$(nproc)" bundle install --jobs $(nproc)
 
 # install exo
-RUN su vscode -c "curl -sL https://exo.deref.io/install | bash"
+RUN curl -sL https://exo.deref.io/install | bash
 ENV PATH "/home/vscode/.exo/bin:$PATH"
 
 # install just (command runner)
-RUN curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin
+RUN curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | sudo bash -s -- --to /usr/local/bin
 
-RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && nvm install 18 && nvm use 18 && npm install -g yarn" 2>&1
-ENV PATH /usr/local/share/nvm/current/bin:$PATH
+# RUN source /usr/local/share/nvm/nvm.sh && nvm install 18 && nvm use 18 && npm install -g yarn 2>&1
+# ENV PATH /usr/local/share/nvm/current/bin:$PATH
 
-# install `backlog` tool
-RUN su vscode -c "npm i -g backlog.md"
+# # install `backlog` tool
+# RUN npm i -g backlog.md
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index f6d1d66d..96731ff6 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -7,7 +7,26 @@
   "workspaceFolder": "/workspaces/${localWorkspaceFolderBasename}",
   "features": {
     "ghcr.io/meaningful-ooo/devcontainer-features/fish:1": {},
-    "ghcr.io/nikobockerman/devcontainer-features/fish-persistent-data:2": {}
+    "ghcr.io/nikobockerman/devcontainer-features/fish-persistent-data:2": {},
+    "ghcr.io/devcontainers-extra/features/npm-package:1": {
+      "package": "backlog.md"
+    }
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "Shopify.ruby-extensions-pack",
+        "dbaeumer.vscode-eslint",
+        "aliariff.vscode-erb-beautify",
+        "bradlc.vscode-tailwindcss",
+        "KoichiSasada.vscode-rdbg",
+        "qwtel.sqlite-viewer",
+        "esbenp.prettier-vscode",
+        "ms-azuretools.vscode-docker",
+        "1YiB.rust-bundle",
+        "rust-lang.rust-analyzer"
+      ]
+    }
   },
   // Use 'forwardPorts' to make a list of ports inside the container available locally.
   // This can be used to network with other containers or the host.
diff --git a/.devcontainer/fish-shell-conf-d/rbenv.fish b/.devcontainer/fish-shell-conf-d/rbenv.fish
new file mode 100644
index 00000000..d1231197
--- /dev/null
+++ b/.devcontainer/fish-shell-conf-d/rbenv.fish
@@ -0,0 +1 @@
+status --is-interactive; and rbenv init - --no-rehash fish | source
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..567aa29f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "gems/has_aux_table"]
+	path = gems/has_aux_table
+	url = ssh://git@git.dy.mk:2221/dymk/has_aux_table.git
diff --git a/.ruby-version b/.ruby-version
index 5b820117..f9892605 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-system
\ No newline at end of file
+3.4.4
diff --git a/Dockerfile b/Dockerfile
index 5323eb58..827afaab 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Primary image
-FROM ruby:3.2.6
+FROM ruby:3.4.4
 USER root
 
 # apt caching & install packages
@@ -14,10 +14,10 @@ RUN \
     libblas-dev liblapack-dev
 
 # preinstall gems that take a long time to install
-RUN MAKE="make -j12" gem install bundler           -v '2.5.6' --verbose
-RUN MAKE="make -j12" gem install rice              -v '4.3.3' --verbose
-RUN MAKE="make -j12" gem install faiss             -v '0.3.2' --verbose
-RUN MAKE="make -j12" gem install rails_live_reload -v '0.3.6' --verbose
+RUN MAKE="make -j12" gem install bundler           -v '2.6.7'
+RUN MAKE="make -j12" gem install rice              -v '4.3.3'
+RUN MAKE="make -j12" gem install faiss             -v '0.3.2'
+RUN MAKE="make -j12" gem install rails_live_reload -v '0.3.6'
 RUN bundle config --global frozen 1
 
 # set up nodejs 18.x deb repo
@@ -46,9 +46,8 @@ RUN \
 
 WORKDIR /usr/src/app
 COPY Gemfile Gemfile.lock ./
-RUN echo "StrictHostKeyChecking no" >> /etc/ssh/ssh_config
-RUN bundle config --local frozen 1
-RUN --mount=type=ssh bundle install
+COPY gems/has_aux_table ./gems/has_aux_table
+RUN ls -lah gems && BUNDLE_FROZEN=true MAKE="make -j$(nproc)" bundle install --jobs $(nproc)
 
 # install js dependencies
 COPY package.json yarn.lock ./
diff --git a/Gemfile b/Gemfile
index ae7f95f3..6408f426 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,20 +1,17 @@
 source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "~> 3.2"
+ruby "~> 3"
+gem "bundler", "~> 2.6.7"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.2"
-gem "has_aux_table",
-    git: "ssh://git@git.dy.mk:2221/dymk/has_aux_table.git",
-    branch: "main"
+gem "has_aux_table", path: "gems/has_aux_table"
 
 # The original asset pipeline for Rails [https://github.com/rails/sprockets-rails]
 gem "sprockets-rails"
 
-# Use sqlite3 as the database for Active Record
 gem "pg"
-gem "sqlite3", "~> 1.4"
 
 gem "pry"
 gem "pry-stack_explorer"
@@ -58,7 +55,7 @@ gem "bootsnap", require: false
 
 group :development, :test, :staging do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
-  gem "debug", "~> 1.10", platforms: %i[mri mingw x64_mingw]
+  gem "debug", "~> 1.11", platforms: %i[mri mingw x64_mingw]
 end
 
 group :development, :staging do
diff --git a/Gemfile.lock b/Gemfile.lock
index ac951a6a..334cf034 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,10 +24,8 @@ GIT
       railties
       websocket-driver
 
-GIT
-  remote: ssh://git@git.dy.mk:2221/dymk/has_aux_table.git
-  revision: fb7912e3536c339cba55af54c3e647f69f5997f3
-  branch: main
+PATH
+  remote: gems/has_aux_table
   specs:
     has_aux_table (0.1.0)
       activerecord (>= 7.0)
@@ -155,7 +153,7 @@ GEM
     db-query-matchers (0.14.0)
       activesupport (>= 4.0, < 8.1)
       rspec (>= 3.0)
-    debug (1.10.0)
+    debug (1.11.0)
       irb (~> 1.10)
       reline (>= 0.3.8)
     debug_inspector (1.2.0)
@@ -212,16 +210,22 @@ GEM
       fugit (>= 1.11.0)
       railties (>= 6.1.0)
       thor (>= 1.0.0)
-    google-protobuf (4.29.2-aarch64-linux)
+    google-protobuf (4.31.1-aarch64-linux-gnu)
       bigdecimal
       rake (>= 13)
-    google-protobuf (4.29.2-arm64-darwin)
+    google-protobuf (4.31.1-aarch64-linux-musl)
       bigdecimal
       rake (>= 13)
-    google-protobuf (4.29.2-x86_64-darwin)
+    google-protobuf (4.31.1-arm64-darwin)
       bigdecimal
       rake (>= 13)
-    google-protobuf (4.29.2-x86_64-linux)
+    google-protobuf (4.31.1-x86_64-darwin)
+      bigdecimal
+      rake (>= 13)
+    google-protobuf (4.31.1-x86_64-linux-gnu)
+      bigdecimal
+      rake (>= 13)
+    google-protobuf (4.31.1-x86_64-linux-musl)
       bigdecimal
       rake (>= 13)
     htmlbeautifier (1.4.3)
@@ -589,10 +593,6 @@ GEM
       actionpack (>= 6.1)
       activesupport (>= 6.1)
       sprockets (>= 3.0.0)
-    sqlite3 (1.7.3-aarch64-linux)
-    sqlite3 (1.7.3-arm64-darwin)
-    sqlite3 (1.7.3-x86_64-darwin)
-    sqlite3 (1.7.3-x86_64-linux)
     stackprof (0.2.26)
     stimulus-rails (1.3.4)
       railties (>= 6.0.0)
@@ -669,6 +669,7 @@ DEPENDENCIES
   addressable
   attr_json
   bootsnap
+  bundler (~> 2.6.7)
   capybara
   charlock_holmes
   cloudflare-rails
@@ -679,7 +680,7 @@ DEPENDENCIES
   curb
   daemons
   db-query-matchers (~> 0.14)
-  debug (~> 1.10)
+  debug (~> 1.11)
   devise (~> 4.9)
   dhash-vips
   discard
@@ -742,7 +743,6 @@ DEPENDENCIES
   spring-commands-parallel-tests
   spring-commands-rspec
   sprockets-rails
-  sqlite3 (~> 1.4)
   stackprof
   stimulus-rails
   syntax_tree (~> 6.2)
@@ -762,4 +762,4 @@ RUBY VERSION
    ruby 3.2.6p234
 
 BUNDLED WITH
-   2.6.2
+   2.6.7
diff --git a/gems/has_aux_table b/gems/has_aux_table
new file mode 160000
index 00000000..fb7912e3
--- /dev/null
+++ b/gems/has_aux_table
@@ -0,0 +1 @@
+Subproject commit fb7912e3536c339cba55af54c3e647f69f5997f3