Proactive doctor, setup wizard, and TUI fixes

BREAKING CHANGES / KNOWN ISSUES:
- 8 skills have syntax errors causing loader warnings:
  org-skill-bouncer, org-skill-config-manager, org-skill-credentials-vault,
  org-skill-engineering-standards, org-skill-gardener, org-skill-homoiconic-memory,
  org-skill-peripheral-vision, org-skill-policy
- These skills fail to load but don't block system operation
- TUI works despite these errors

FEATURES ADDED:

1. Proactive Doctor System
   - Doctor runs automatically on daemon startup
   - Health check runs before accepting connections
   - Adds /health endpoint for health status queries
   - *system-health* variable tracks: :healthy, :degraded, :unhealthy, :unknown

2. Error Handling (Option B - Debugger Hook)
   - TUI and CLI now run doctor diagnostics on errors
   - Shows "Run opencortex doctor" message on crash
   - Suggests repair commands after failures

3. Interactive Setup Wizard (org-skill-config-manager)
   - Full wizard implemented in config-manager skill:
     * LLM provider configuration (OpenAI, Anthropic, OpenRouter, Groq, Gemini, Ollama)
     * Gateway linking (Slack, Discord)
     * Memory settings (auto-save interval, history retention)
     * Network settings (timeout, proxy)
   - Saves to ~/.config/opencortex/.env (KEY=VALUE format)
   - CLI integration: opencortex setup, setup --add-provider, setup --link

4. CLI Enhancements
   - doctor --watch: Background health monitoring (60s interval)
   - doctor --fix: Interactive repair (falls back to full setup if core files missing)
   - setup command runs wizard or delegates to setup_system

5. TUI Fixes
   - Inlined message formatting to avoid dependency issues
   - Added error handling in handle-return
   - Cleaner error messages

6. Thin Harness Compliance
   - Removed doctor from harness (now in org-skill-diagnostics skill)
   - XDG directories: only .lisp in harness, .org kept in skills for loader

harness/tui-client.org

@@ -38,7 +38,7 @@ The OpenCortex TUI Client is a standalone Common Lisp application built on **Cro
 #+begin_src lisp
 (in-package :cl-user)
 (defpackage :opencortex.tui
-  (:use :cl :croatoan)
+  (:use :cl :croatoan :usocket)
   (:export :main))
 (in-package :opencortex.tui)
 #+end_src
@@ -108,13 +108,18 @@ The OpenCortex TUI Client is a standalone Common Lisp application built on **Cro
     (when (> (length cmd) 0)
       (enqueue-msg (format nil "⬆ ~a" cmd))
       (handler-case
-          (when (and stream (open-stream-p stream))
-            (format stream "~a" (opencortex:frame-message (list :TYPE :EVENT 
-                                                               :META (list :SOURCE :tui)
-                                                               :PAYLOAD (list :SENSOR :user-input :TEXT cmd))))
-            (finish-output stream))
+          (progn
+            (when (and stream (open-stream-p stream))
+              (let* ((msg (list :TYPE :EVENT 
+                               :META (list :SOURCE :tui)
+                               :PAYLOAD (list :SENSOR :user-input :TEXT cmd)))
+                     (payload (format nil "~s" msg))
+                     (len (length payload)))
+                (format stream "~6,'0x~a" len payload)
+                (finish-output stream)))
+            (enqueue-msg "✓ Sent"))
         (error (c)
-          (declare (ignore c))
+          (format t "Send error: ~a~%" c)
           (enqueue-msg "ERROR: Connection to daemon lost.")
           (setf *is-running* nil))))
     (when (string= cmd "/exit") (setf *is-running* nil))