feat: add owncloud photo organizer script and cron setup

owncloud/README.md

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+# ownCloud Photo Organizer
+
+## Overview
+
+ownCloud's Android app does not support automatic year/month subfolder creation
+during instant upload (unlike Nextcloud). This script compensates by running
+nightly and sorting all uploaded photos and videos into a `YEAR/YEAR-MM/`
+folder structure.
+
+## Script
+
+**Location on server:** `/usr/local/bin/organize_photos.sh`
+
+**Source folder watched:**
+`/mnt/INTEL-SSD/ownCloud - Joe Gitta@cloud.jgitta.com/Personal/InstantUpload`
+
+**Subfolders processed:** `Camera`, `BlueIris`, `Facebook`, `scans`, `EufyVideoDir`
+
+**Supported file types:** jpg, jpeg, png, gif, heic, webp, bmp, tiff, mp4, mov, pdf
+
+## How It Works
+
+The script reads the date from each filename using these patterns (in order):
+
+1. `YYYYMMDD` embedded in the filename (e.g. `20231022_082107.jpg`)
+2. `YYYY-MM-DD` or `YYYY_MM_DD` format
+3. 13-digit Unix timestamp in milliseconds (e.g. `FB_IMG_1572815868839.jpg`)
+4. `MM_DD_YYYY` prefix (scans folder format, e.g. `06_11_2026_7_28_16_AM.pdf`)
+
+Files that don't match any pattern are moved to `_unsorted/` for manual review.
+
+## Output Structure
+
+```
+InstantUpload/
+└── Camera/
+    ├── 2023/
+    │   ├── 2023-06/
+    │   └── 2023-12/
+    ├── 2024/
+    │   └── 2024-03/
+    └── _unsorted/
+```
+
+## Cron Job
+
+Runs nightly at 2:00 AM as root:
+
+```
+0 2 * * * /usr/local/bin/organize_photos.sh
+```
+
+To view or edit: `sudo crontab -e`
+
+## Log File
+
+Each run appends to `/var/log/organize_photos.log`:
+
+```
+=== 2026-06-14 02:00:01 Starting ===
+  Moved: 12  Unsorted: 0  Skipped: 0  Errors: 0
+=== Done ===
+```
+
+Check the log anytime with:
+```bash
+cat /var/log/organize_photos.log
+```
+
+## Installation
+
+```bash
+sudo cp organize_photos.sh /usr/local/bin/organize_photos.sh
+sudo chmod +x /usr/local/bin/organize_photos.sh
+(sudo crontab -l; echo "0 2 * * * /usr/local/bin/organize_photos.sh") | sudo crontab -
+```