Fix phase-3 role: ai-raw mount path, state:absent for stale fstab cleanup; remove duplicated CLAUDE.md section

ansible/roles/phase-3-filesystems/tasks/main.yml

@@ -30,7 +30,7 @@
         final_mount: /srv/rag-library
       - name: ai-logs
         byid: "{{ drive_ai_logs_byid }}"
-        raw_mount: /srv/ai-logs-raw
+        raw_mount: /srv/ai-raw
         final_mount: /srv/ai-logs
       - name: prompt-library
         byid: "{{ drive_prompt_byid }}"
@@ -68,7 +68,7 @@
 - name: Unmount existing xfs partition before conversion
   ansible.posix.mount:
     path: "{{ item.raw_mount }}"
-    state: unmounted
+    state: absent
   loop: "{{ drives_to_convert }}"
   loop_control:
     label: "{{ item.name }}"