Remove Step 0.16 (NFS on Sifaka)

Nothing in Phase 0 requires NFS, and it's per-share config anyway.
Will add when actually needed.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plans/k8s-migration.md

@@ -743,43 +743,6 @@ tail -f ~/Library/Logs/mcquack.zot.err.log
 
 ---
 
-### Step 0.16: Enable NFS on Sifaka (MANUAL)
-
-Enable NFS file sharing on the Synology NAS for k8s workloads that need persistent storage.
-
-**Steps in DSM web UI** (http://sifaka:5000/):
-
-1. **Enable NFS service:**
-   - Control Panel → File Services → NFS
-   - Check "Enable NFS service"
-   - Maximum NFS protocol: NFSv4.1
-
-2. **Configure NFS permissions on shared folder:**
-   - Control Panel → Shared Folder
-   - Select the folder to share (e.g., `backups` or create `k8s-volumes`)
-   - Edit → NFS Permissions → Create
-   - Hostname/IP: `indri` (or `100.64.0.0/10` for all tailnet)
-   - Privilege: Read/Write
-   - Squash: Map root to admin
-   - Security: sys
-   - Enable asynchronous: Yes (for performance)
-
-3. **Note the export path** (shown in NFS Permissions tab):
-   - Format: `/volume1/shared-folder-name`
-
-**Verification:**
-```bash
-# From indri, test NFS mount
-ssh indri 'sudo mkdir -p /mnt/sifaka-test'
-ssh indri 'sudo mount -t nfs sifaka:/volume1/k8s-volumes /mnt/sifaka-test'
-ssh indri 'ls /mnt/sifaka-test'
-ssh indri 'sudo umount /mnt/sifaka-test'
-```
-
-**Note:** This is for future use - no workloads in Phase 0 require NFS. Pods will use NFS PersistentVolumes in later phases.
-
----
-
 ### Phase 0 Verification Checklist
 
 Run after completing all steps: