REFAC: Consolidated onboarding into setup.org and added one-liner installer

Dockerfile

@@ -27,14 +27,13 @@ ENV PATH="/opt/venv/bin:$PATH"
 RUN pip install playwright \
     && playwright install --with-deps chromium
 
-# 2. Install signal-cli (v0.14.0)
+# 3. Install signal-cli (v0.14.0)
 ENV SIGNAL_CLI_VERSION=0.14.0
 RUN curl -L https://github.com/AsamK/signal-cli/releases/download/v${SIGNAL_CLI_VERSION}/signal-cli-${SIGNAL_CLI_VERSION}-Linux.tar.gz | tar xz -C /opt \
     && ln -s /opt/signal-cli-${SIGNAL_CLI_VERSION}/bin/signal-cli /usr/local/bin/signal-cli
 
-# 3. Install Quicklisp & Pin Distribution
+# 4. Install Quicklisp & Pin Distribution
 # Pinned to 2026-04-01 for bit-rot resistance.
-# Monthly maintenance task in gtd.org handles testing of newer distributions.
 WORKDIR /root
 RUN curl -O https://beta.quicklisp.org/quicklisp.lisp \
     && sbcl --non-interactive \
@@ -42,20 +41,19 @@ RUN curl -O https://beta.quicklisp.org/quicklisp.lisp \
         --eval '(quicklisp-quickstart:install)' \
         --eval '(ql-dist:install-dist "http://beta.quicklisp.org/dist/quicklisp/2026-04-01/distinfo.txt" :prompt nil :replace t)'
 
-# 4. Configure SBCL to load Quicklisp on startup
+# 5. Configure SBCL to load Quicklisp on startup
 RUN echo '(let ((quicklisp-init (merge-pathnames "quicklisp/setup.lisp" (user-homedir-pathname)))) (when (probe-file quicklisp-init) (load quicklisp-init)))' > /root/.sbclrc
 
-# 5. Setup Application Directory
+# 6. Setup Application Directory
 WORKDIR /app
 COPY . /app/projects/org-agent
 
-# 6. Pre-cache Lisp Dependencies
-# This minimizes startup time by downloading dexador, cl-json, etc. during build
+# 7. Pre-cache Lisp Dependencies
 RUN sbcl --non-interactive \
     --eval '(push #p"/app/projects/org-agent/" asdf:*central-registry*)' \
     --eval '(ql:quickload :org-agent)'
 
-# 7. Environment & Volumes
+# 8. Environment & Volumes
 # The host's memex root should be mounted to /memex
 ENV MEMEX_DIR=/memex
 VOLUME ["/memex"]