feat: add code-server service and repo scaffolding

Set up the per-service layout: each service directory holds compose.yml
with a committed .env.example and a gitignored .env.

Add code-server as the first service, plus a README and CLAUDE.md
documenting that these files target Coolify/Dokploy and deliberately
omit ports and restart policies.

code-server/.env.example

@@ -0,0 +1,16 @@
+# Copy to .env and fill in. Never commit .env.
+#
+#   cp .env.example .env
+
+# Web UI login password. MUST NOT be blank -- the LinuxServer image serves
+# code-server without authentication when PASSWORD is empty.
+# Also used for SUDO_PASSWORD inside the container.
+# Generate one with: openssl rand -base64 24
+PASSWORD=
+
+# Git identity baked into the container (author + committer).
+GIT_NAME=
+GIT_EMAIL=
+
+# OpenAI Codex CLI auth token. Leave blank if you don't use Codex.
+CODEX_ACCESS_TOKEN=

code-server/compose.yml

@@ -0,0 +1,24 @@
+services:
+  code-server:
+    image: 'lscr.io/linuxserver/code-server:latest'
+    hostname: miti99-cs
+    environment:
+      - PUID=1000
+      - PGID=1000
+      - TZ=Asia/Ho_Chi_Minh
+      - DEFAULT_WORKSPACE=/config/workspace
+      - PWA_APPNAME=code-server
+      - 'DOCKER_MODS=linuxserver/mods:universal-package-install|linuxserver/mods:universal-docker|linuxserver/mods:code-server-golang|linuxserver/mods:code-server-nodejs|linuxserver/mods:code-server-npmglobal|linuxserver/mods:code-server-pnpm|linuxserver/mods:code-server-python3|linuxserver/mods:code-server-zsh'
+      - INSTALL_PACKAGES=apache2-utils|bfs|ffmpeg|gh|git|imagemagick|librsvg2-bin|lsof|psmisc|ugrep|unzip|zip
+      - NODEJS_MOD_VERSION=24
+      - PASSWORD=${PASSWORD}
+      - SUDO_PASSWORD=${PASSWORD}
+      - GIT_AUTHOR_NAME=${GIT_NAME}
+      - GIT_AUTHOR_EMAIL=${GIT_EMAIL}
+      - GIT_COMMITTER_NAME=${GIT_NAME}
+      - GIT_COMMITTER_EMAIL=${GIT_EMAIL}
+      - CODEX_ACCESS_TOKEN=${CODEX_ACCESS_TOKEN}
+    volumes:
+      - 'code-server-config:/config'
+volumes:
+  code-server-config: