docs: global terminology update from kernel/core to harness

docs/quickstart.org

@@ -7,7 +7,7 @@
 Welcome to ~org-agent~, the "Executive Soul" of your personal OS. This guide will help you set up and interact with your first neurosymbolic agent.
 
 * 2. Prerequisites
-Before launching the kernel, ensure your host environment has:
+Before launching the harness, ensure your host environment has:
 - **Docker & Docker Compose**: The primary enclosure for the Lisp Machine.
 - **LLM API Keys**: At least one key for Gemini, Anthropic, or OpenAI.
 - **Emacs (Optional)**: For the full literate experience via ~org-agent.el~.
@@ -33,7 +33,7 @@ docker-compose up --build -d
 #+end_src
 
 * 4. Interaction Gateways
-Once the kernel is "Ready", you can interact with it via multiple sensors.
+Once the harness is "Ready", you can interact with it via multiple sensors.
 
 ** Gateway A: Emacs (OACP)
 If you have configured the ~org-agent~ package in Emacs:
@@ -44,7 +44,7 @@ If you have configured the ~org-agent~ package in Emacs:
 If you enabled Signal or Telegram in ~.env~, send a message directly to your bot.
 
 * 5. Verification (The Chaos Check)
-To ensure the kernel is fully healthy, check the logs for the Micro-Loader summary:
+To ensure the harness is fully healthy, check the logs for the Micro-Loader summary:
 #+begin_src bash
 docker-compose logs -f org-agent
 #+end_src
@@ -52,4 +52,4 @@ Look for: ~LOADER: Boot Complete. [Ready: 34] [Failed: 0]~
 
 * 6. Next Steps
 - **Extend the Brain**: Read the [[file:skill-creation.org][Skill Creation Guide]] to add custom Lisp skills.
-- **Deep Dive**: Explore the [[file:../literate/][literate/]] directory to understand the kernel's architecture.
+- **Deep Dive**: Explore the [[file:../literate/][literate/]] directory to understand the harness's architecture.