feat: add falah-shortcodes WP plugin and Falah Mobile deploy script

Implements all missing shortcodes for ummah.falahos.my:
- [prayer_times] — Aladhan API, no auth required
- [dhikr_counter] — localStorage-backed, works offline
- [qibla_compass] — browser Geolocation + DeviceOrientation
- [daily_verse] — AlQuran.cloud API, no auth required
- [nur_ai_chat], [falah_wallet], [souq_marketplace] — iframe Falah Mobile
- [falah_dashboard] — auto-injects dashboard content into empty page

Also adds deploy-falah-mobile.sh to build and run the Next.js app on
13.140.161.244:4013, and Nginx reverse proxy config for falahos.my/mobile.

wordpress-plugins/falah-shortcodes/README.md

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+# Falah Shortcodes — WordPress Plugin
+
+Implements all missing shortcodes for ummah.falahos.my.
+
+## Installation
+
+1. Upload the `falah-shortcodes/` folder to `/wp-content/plugins/`
+2. Activate in **Plugins → Installed Plugins**
+3. Configure in **Settings → Falah Shortcodes**:
+   - Set **Falah Mobile URL** (default: `https://falahos.my/mobile`)
+   - Set default prayer city/country
+
+## Shortcodes
+
+| Shortcode | Page | Notes |
+|-----------|------|-------|
+| `[prayer_times]` | /tools | Calls Aladhan API — no key needed |
+| `[dhikr_counter]` | /tools | localStorage — works offline |
+| `[qibla_compass]` | /tools | Requires browser geolocation permission |
+| `[daily_verse]` | /tools | Calls Al-Quran Cloud API — no key needed |
+| `[nur_ai_chat]` | /nur | Iframes Falah Mobile `/nur` |
+| `[falah_wallet]` | /wallet | Iframes Falah Mobile `/wallet` |
+| `[souq_marketplace]` | /souq | Iframes Falah Mobile `/souq` |
+| `[falah_dashboard]` | /dashboard | Auto-injected if dashboard page is empty |
+
+## Deploying Falah Mobile (required for nur/wallet/souq)
+
+Run from the falah-os-ce directory:
+
+```bash
+bash deploy-falah-mobile.sh 13.140.161.244 root
+```
+
+Then add this to the Nginx vhost for falahos.my:
+
+```nginx
+location /mobile {
+    proxy_pass         http://127.0.0.1:4013;
+    proxy_set_header   Host $host;
+    proxy_set_header   X-Real-IP $remote_addr;
+    proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header   X-Forwarded-Proto $scheme;
+}
+```
+
+Update **Settings → Falah Shortcodes → Falah Mobile URL** to `https://falahos.my/mobile`.
+
+## What each standalone feature uses
+
+- **Prayer Times** — [Aladhan API](https://aladhan.com/prayer-times-api) (free, no auth)
+- **Daily Verse** — [AlQuran.cloud API](https://alquran.cloud/api) (free, no auth)
+- **Dhikr Counter** — browser localStorage (no network call)
+- **Qibla Compass** — browser Geolocation + DeviceOrientation APIs (no network call)