Restructure nvim sandbox into "devcube" IDE with zellij + workmux

Turn the single-purpose nvim-dev sandbox into a containerized IDE that can
run multiple AI agents in parallel, each in its own git worktree, inside one
container. Adds zellij (multiplexer) + workmux (git-worktree orchestration)
and a baked fish + starship shell, behind a single `devc` command.

- Move the container project dot_files/nvim -> dot_files/devcube (Containerfile,
  entrypoint, Justfile, README, wrapper). dot_files/nvim now holds only the
  nvim config dotfile.
- Build context moves up to dot_files/ so fish/starship/zellij/workmux/nvim
  configs (top-level dotfiles) can be baked in; add dot_files/.dockerignore.
- New wrapper devcube.sh dispatches on its first arg (`devc` -> workmux,
  `devc nvim|claude|codex|agy|zellij`), replacing the per-tool symlinks that
  shadowed host installs. Orchestrators get a per-project worktree volume
  mounted at /worktrees (path-derived name, persists across restarts, isolated
  per project) with workmux state redirected there via XDG_STATE_HOME.
- New baked configs: zellij Tokyo Night Moon theme + workmux layout, workmux
  config (worktree_dir: /worktrees).
- Full rename: image -> devcube, workflow -> build-devcube.yml, ujust recipes
  -> devcube-*, just file -> 61-devcube.just, env -> DEVCUBE_*, sentinel
  -> DEVCUBE, state volume -> hypercube-devcube-home.
- Update nvim-launcher/desktop to open `devc nvim`, plus docs and the build
  test reference.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K44UxeGUD7Peow4F4ipmXz

Author: claude

.github/workflows/build-nvim-dev.yml .github/workflows/build-devcube.yml.github/workflows/build-nvim-dev.yml renamed to .github/workflows/build-devcube.yml

@@ -1,8 +1,8 @@
-# Build and publish nvim-dev container image
-# Triggered on changes to dot_files/nvim/ or manual dispatch
-# Image published to: ghcr.io/binarypie-dev/nvim-dev:latest
+# Build and publish the devcube container image
+# Triggered on changes to the baked dot_files configs or manual dispatch
+# Image published to: ghcr.io/binarypie-dev/devcube:latest
 
-name: Build nvim-dev Image
+name: Build devcube Image
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -13,20 +13,30 @@ on:
     branches:
       - main
     paths:
-      # Config is baked into the image, so any config change must rebuild.
+      # Configs are baked into the image, so any config change must rebuild.
+      - 'dot_files/devcube/**'
       - 'dot_files/nvim/**'
-      - '.github/workflows/build-nvim-dev.yml'
+      - 'dot_files/fish/**'
+      - 'dot_files/starship/**'
+      - 'dot_files/zellij/**'
+      - 'dot_files/workmux/**'
+      - '.github/workflows/build-devcube.yml'
   pull_request:
     paths:
+      - 'dot_files/devcube/**'
       - 'dot_files/nvim/**'
-      - '.github/workflows/build-nvim-dev.yml'
+      - 'dot_files/fish/**'
+      - 'dot_files/starship/**'
+      - 'dot_files/zellij/**'
+      - 'dot_files/workmux/**'
+      - '.github/workflows/build-devcube.yml'
   workflow_dispatch:
   schedule:
     # Rebuild daily to get updated packages
     - cron: '0 6 * * *'
 
 env:
-  IMAGE_NAME: nvim-dev
+  IMAGE_NAME: devcube
   IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
 
 jobs:
@@ -85,8 +95,8 @@ jobs:
       - name: Build and push
         uses: docker/build-push-action@v7
         with:
-          context: dot_files/nvim
-          file: dot_files/nvim/Containerfile
+          context: dot_files
+          file: dot_files/devcube/Containerfile
           platforms: ${{ matrix.platform }}
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
@@ -129,12 +139,12 @@ jobs:
 
       - name: Generate build summary
         run: |
-          echo "## nvim-dev Image Built" >> $GITHUB_STEP_SUMMARY
+          echo "## devcube Image Built" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "**Image:** \`${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:latest\`" >> $GITHUB_STEP_SUMMARY
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "### Usage" >> $GITHUB_STEP_SUMMARY
           echo "\`\`\`bash" >> $GITHUB_STEP_SUMMARY
-          echo "ujust nvim-setup   # pull image + install the 'nvim' wrapper" >> $GITHUB_STEP_SUMMARY
-          echo "nvim               # launch the AI-first editor" >> $GITHUB_STEP_SUMMARY
+          echo "ujust devcube-setup   # pull image + install the 'devc' wrapper" >> $GITHUB_STEP_SUMMARY
+          echo "devc                  # launch the parallel-agent workspace (workmux)" >> $GITHUB_STEP_SUMMARY
           echo "\`\`\`" >> $GITHUB_STEP_SUMMARY

CONTRIBUTING.md

@@ -33,9 +33,12 @@ hypercube/
 │   │   ├── hyprlock.conf        # Lock screen
 │   │   ├── hypridle.conf        # Idle management
 │   │   └── hyprpaper.conf       # Wallpaper
+│   ├── devcube/                 # devcube IDE image (Containerfile, devc wrapper)
 │   ├── lazygit/                 # Lazygit config
-│   ├── nvim/                    # Neovim/LazyVim setup
+│   ├── nvim/                    # Neovim/LazyVim config (baked into devcube)
 │   ├── qt6ct/                   # Qt6 theming
+│   ├── workmux/                 # workmux parallel-agent config (baked into devcube)
+│   ├── zellij/                  # zellij multiplexer config (baked into devcube)
 │   ├── quickshell/              # App launcher
 │   └── starship/                # Shell prompt
 │

README.md

@@ -3,7 +3,7 @@
 > Cloud-native development environment with vim keybindings
 
 [![Build](https://github.com/binarypie-dev/hypercube/actions/workflows/build.yml/badge.svg)](https://github.com/binarypie-dev/hypercube/actions/workflows/build.yml)
-[![nvim-dev](https://github.com/binarypie-dev/hypercube/actions/workflows/build-nvim-dev.yml/badge.svg)](https://github.com/binarypie-dev/hypercube/actions/workflows/build-nvim-dev.yml)
+[![devcube](https://github.com/binarypie-dev/hypercube/actions/workflows/build-devcube.yml/badge.svg)](https://github.com/binarypie-dev/hypercube/actions/workflows/build-devcube.yml)
 [![Copr](https://copr.fedorainfracloud.org/coprs/binarypie/hypercube/package/datacube/status_image/last_build.png)](https://copr.fedorainfracloud.org/coprs/binarypie/hypercube/)
 [![GHCR](https://img.shields.io/badge/GHCR-ghcr.io%2Fbinarypie--dev%2Fhypercube-blue)](https://ghcr.io/binarypie-dev/hypercube)
 

build_files/hypercube/03-hypercube-configs.sh

@@ -55,9 +55,9 @@ source = /usr/share/hypercube/config/hypr/hyprland.conf
 
 EOF
 
-### Neovim - AI-first sandbox overrides
-# The editor config + AI agents ship baked into the podman image
-# (ujust nvim-setup). Users keep ONLY personal plugin overrides here; this
+### Neovim - devcube sandbox overrides
+# The editor config + AI agents ship baked into the devcube podman image
+# (ujust devcube-setup). Users keep ONLY personal plugin overrides here; this
 # directory is bind-mounted into the container's baked LazyVim config and
 # layered on top of it.
 mkdir -p /etc/skel/.config/hypercube/nvim/lua/plugins

build_files/hypercube/99-tests.sh

@@ -57,7 +57,7 @@ REQUIRED_FILES=(
   # DX config
   "/etc/distrobox/distrobox.ini"
   "/usr/share/ublue-os/just/60-hypercube.just"
-  "/usr/share/ublue-os/just/61-nvim.just"
+  "/usr/share/ublue-os/just/61-devcube.just"
 )
 
 for file in "${REQUIRED_FILES[@]}"; do

dot_files/.dockerignore

@@ -0,0 +1,23 @@
+# Build context for the devcube image is dot_files/. Exclude everything by
+# default and re-include only the dirs the Containerfile bakes, so the heavy
+# desktop configs (hypr backgrounds, quickshell assets, ...) never enter the
+# build context.
+*
+!devcube/
+!nvim/
+!fish/
+!starship/
+!zellij/
+!workmux/
+
+# Noise inside the kept dirs.
+**/.git
+**/.DS_Store
+**/Thumbs.db
+**/*.log
+**/*.swp
+**/*.swo
+**/*~
+
+# Neovim lock/runtime data shouldn't be baked (mounted/managed at runtime).
+nvim/lazy-lock.json

dot_files/nvim/Containerfile dot_files/devcube/Containerfiledot_files/nvim/Containerfile renamed to dot_files/devcube/Containerfile

@@ -1,11 +1,15 @@
-# Hypercube AI-first Neovim sandbox
+# Hypercube devcube — containerized IDE + parallel-agent orchestration
 #
-# A self-contained, portable podman image: LazyVim (baked in), the full dev
-# toolchain (LSPs/formatters/linters), and AI coding agents (Claude Code, OpenAI
-# Codex, Antigravity, GitHub CLI). Agents are launched from inside nvim.
+# A self-contained, portable podman image: Neovim/LazyVim (baked in), the full
+# dev toolchain (LSPs/formatters/linters), AI coding agents (Claude Code, OpenAI
+# Codex, Antigravity, GitHub CLI), plus zellij + workmux for running multiple
+# agents in parallel (each in its own git worktree) and a fish + starship shell.
 #
-# Build: podman build -t nvim-dev .
-# Run:   podman run --rm -it nvim-dev          (see scripts/sandbox.sh for mounts)
+# The build context is the parent dot_files/ dir so the fish/starship/zellij/
+# workmux/nvim configs (top-level dotfiles) can be baked in.
+#
+# Build: cd dot_files && podman build -t devcube -f devcube/Containerfile .
+# Run:   devc            (see devcube/scripts/devcube.sh for mounts + dispatch)
 
 FROM registry.fedoraproject.org/fedora-toolbox:44
 
@@ -131,11 +135,17 @@ RUN brew install \
 # =============================================================================
 # LAYER 6: Infrastructure tools via Homebrew
 # =============================================================================
+# zellij (terminal multiplexer) + workmux (git-worktree -> multiplexer
+# orchestration; a brew tap, auto-tapped by the fully-qualified name) power the
+# parallel-agent workflow. starship renders the fish prompt baked in below.
 RUN brew install \
     opentofu \
     helm \
     sqlfluff \
-    fish
+    fish \
+    starship \
+    zellij \
+    raine/workmux/workmux
 
 # =============================================================================
 # LAYER 7: Rust toolchain (as linuxbrew user)
@@ -251,21 +261,35 @@ RUN mkdir -p /etc/profile.d /etc/fish/conf.d \
 # The full LazyVim config is baked into $HOME/.config/nvim. Personal overrides
 # are bind-mounted at runtime from the host (~/.config/hypercube/nvim) and
 # layered on top via the runtimepath (see lua/config/lazy.lua).
-COPY config/ /root/.config/nvim/
+# NOTE: the build context is dot_files/, so the nvim config lives under nvim/.
+COPY nvim/config/ /root/.config/nvim/
 
 # Pre-install all plugins + build treesitter parsers so first launch is fast and
 # offline. HOME=/root and PATH already include the brew nvim binary.
 RUN nvim --headless "+Lazy! sync" +qa
 
+# =============================================================================
+# LAYER 14b: Bake the shell / multiplexer / orchestrator configs
+# =============================================================================
+# fish + starship give a good in-container shell/prompt; zellij + workmux drive
+# the parallel-agent workflow. These seed into the persisted home volume on
+# first run (podman copy-up), like the nvim config above. starship.toml lands at
+# the exact path dot_files/fish/config.fish hardcodes for STARSHIP_CONFIG, so
+# fish needs no edits (and it lives outside /root, so it's always present).
+COPY fish/     /root/.config/fish/
+COPY zellij/   /root/.config/zellij/
+COPY workmux/  /root/.config/workmux/
+COPY starship/ /usr/share/hypercube/config/starship/
+
 # =============================================================================
 # LAYER 15: Entrypoint
 # =============================================================================
-COPY entrypoint.sh /usr/local/bin/hypercube-nvim-entrypoint
-RUN chmod +x /usr/local/bin/hypercube-nvim-entrypoint
-ENTRYPOINT ["/usr/local/bin/hypercube-nvim-entrypoint"]
+COPY devcube/entrypoint.sh /usr/local/bin/devcube-entrypoint
+RUN chmod +x /usr/local/bin/devcube-entrypoint
+ENTRYPOINT ["/usr/local/bin/devcube-entrypoint"]
 CMD ["nvim"]
 
 # Labels for GitHub Container Registry
 LABEL org.opencontainers.image.source="https://github.com/binarypie/hypercube"
-LABEL org.opencontainers.image.description="AI-first Neovim sandbox: LazyVim + dev toolchain + Claude Code, Codex, Antigravity, gh"
+LABEL org.opencontainers.image.description="devcube: containerized IDE (Neovim/LazyVim + dev toolchain + Claude Code, Codex, Antigravity, gh) with zellij + workmux parallel-agent orchestration"
 LABEL org.opencontainers.image.licenses="MIT"

dot_files/nvim/Justfile dot_files/devcube/Justfiledot_files/nvim/Justfile renamed to dot_files/devcube/Justfile

@@ -1,9 +1,13 @@
-# Hypercube Neovim sandbox — local development and testing commands
+# Hypercube devcube — local development and testing commands
+#
+# The build context is the parent dot_files/ dir (so fish/starship/zellij/
+# workmux/nvim configs can be baked), hence `-f Containerfile ..` below.
 
-local_image := "localhost/nvim-dev"
-remote_image := "ghcr.io/binarypie-dev/nvim-dev:latest"
-# Throwaway volume so local testing never touches the real hypercube-nvim-home.
-test_volume := "hypercube-nvim-test"
+local_image := "localhost/devcube"
+remote_image := "ghcr.io/binarypie-dev/devcube:latest"
+# Throwaway volumes so local testing never touches the real per-project state.
+test_volume := "hypercube-devcube-test"
+test_wt_prefix := "devcube-wt-test"
 
 # Default recipe - show help
 default:
@@ -13,16 +17,16 @@ default:
 # Image Building
 # =============================================================================
 
-# Build the container image locally
+# Build the container image locally (context is the parent dot_files/ dir)
 build:
-    @echo "Building nvim-dev image locally..."
-    podman build -t {{local_image}} .
+    @echo "Building devcube image locally..."
+    podman build -t {{local_image}} -f Containerfile ..
     @echo "Done! Image: {{local_image}}"
 
 # Build without cache
 build-no-cache:
-    @echo "Building nvim-dev image (no cache)..."
-    podman build --no-cache -t {{local_image}} .
+    @echo "Building devcube image (no cache)..."
+    podman build --no-cache -t {{local_image}} -f Containerfile ..
     @echo "Done! Image: {{local_image}}"
 
 # Push to GHCR (requires: podman login ghcr.io)
@@ -34,30 +38,27 @@ push:
 # Usage (against the LOCAL image)
 # =============================================================================
 
-# Launch the sandbox (nvim) from the local image, using a throwaway test volume
+# Launch devcube from the local image (e.g. `just run` for workmux, `just run nvim`),
+# using throwaway test volumes.
 run *args:
-    HYPERCUBE_NVIM_IMAGE={{local_image}} HYPERCUBE_NVIM_VOLUME={{test_volume}} ./scripts/sandbox.sh {{args}}
+    DEVCUBE_IMAGE={{local_image}} DEVCUBE_VOLUME={{test_volume}} DEVCUBE_WT_PREFIX={{test_wt_prefix}} ./scripts/devcube.sh {{args}}
 
-# Launch an agent directly (e.g. `just run-agent claude`) from the local image
+# Launch a specific tool directly (e.g. `just run-agent claude`) from the local image
 run-agent agent *args:
-    #!/usr/bin/bash
-    set -euo pipefail
-    link="$(mktemp -d)/{{agent}}"
-    ln -s "$(pwd)/scripts/sandbox.sh" "$link"
-    HYPERCUBE_NVIM_IMAGE={{local_image}} HYPERCUBE_NVIM_VOLUME={{test_volume}} "$link" {{args}}
+    DEVCUBE_IMAGE={{local_image}} DEVCUBE_VOLUME={{test_volume}} DEVCUBE_WT_PREFIX={{test_wt_prefix}} ./scripts/devcube.sh {{agent}} {{args}}
 
 # Open a shell in the local image
 shell:
     podman run --rm -it --init --user 0:0 --security-opt label=disable \
-        -e HYPERCUBE_NVIM=1 -e TERM \
+        -e DEVCUBE=1 -e TERM \
         -v {{test_volume}}:/root \
         {{local_image}} bash
 
 # =============================================================================
 # Tests
 # =============================================================================
 
-# Verify the image: nvim config loads and the toolchain + AI CLIs are present
+# Verify the image: nvim config loads and the toolchain + AI CLIs + orchestrators are present
 test-build: build
     @echo "Testing container..."
     podman run --rm {{local_image}} nvim --headless +qa
@@ -70,6 +71,10 @@ test-build: build
     podman run --rm {{local_image}} claude --version
     podman run --rm {{local_image}} codex --version
     podman run --rm {{local_image}} agy --version
+    podman run --rm {{local_image}} zellij --version
+    podman run --rm {{local_image}} workmux --version
+    podman run --rm {{local_image}} starship --version
+    podman run --rm {{local_image}} fish --version
     @echo ""
     @echo "All tests passed!"
 
@@ -81,6 +86,7 @@ test-build: build
 clean-image:
     -podman rmi {{local_image}}
 
-# Remove the throwaway test volume
+# Remove the throwaway test volumes (home + any per-project worktree volumes)
 clean-volume:
     -podman volume rm -f {{test_volume}}
+    -podman volume ls -q | grep '^{{test_wt_prefix}}-' | xargs -r podman volume rm -f