Reorganize repository into monorepo structure

Restructured the project to support multiple frontend applications:
- Move web app to web/ directory
- Create pezkuwi-sdk-ui/ for Polkadot SDK clone (planned)
- Create mobile/ directory for mobile app development
- Add shared/ directory with common utilities, types, and blockchain code
- Update README.md with comprehensive documentation
- Remove obsolete DKSweb/ directory

This monorepo structure enables better code sharing and organized
development across web, mobile, and SDK UI projects.

web/MULTISIG_CONFIG.md

@@ -0,0 +1,138 @@
+# USDT Treasury Multisig Configuration
+
+## 🔐 Multisig Members (3/5 Threshold)
+
+### 1️⃣ Serok (Founder) - UNIQUE ✅
+```
+Address:    5D74yW53pg3gCaLMzGvZUNxiqTZMwFXA85bB2QYfcYh5Tdc4
+Public Key: 0x2e09d02b815849b92dd5a5aa0d5591e1b1c82311a9385975ebb0ff2cc34e6727
+Source:     On-chain (pallet-tiki)
+```
+
+### 2️⃣ SerokiMeclise (Parliament Speaker) - UNIQUE ✅
+```
+Address:    5GTRuK96TkmjUSuQnkjBJBCEmHSDSdW22ptWosxCBWACfsZp
+Public Key: 0xc245deedbf626ba3400df709befe52d938eca44e863ea5bd59b0a81f3c41f632
+Source:     On-chain (pallet-tiki)
+```
+
+### 3️⃣ Xezinedar (Treasurer) - UNIQUE ✅
+```
+Address:    5DRTYPChot1UPDHEeJVTtuE8dLDgCVvAcWbdnc8zwwpYYjeR
+Public Key: 0x3c10328e0bcfbb03969f72ed0630f091e4603f2a865c8184d33f4bfa3385db02
+Source:     On-chain (pallet-tiki)
+```
+
+### 4️⃣ Noter (Notary) - Specified
+```
+Address:    5DFwqK698vL4gXHEcanaewnAqhxJ2rjhAogpSTHw3iwGDwd3
+Public Key: 0x34cefb7e586c150b771813a210d6d5a2a60c8d8bc2b2fecf58fd0af11341167f
+Source:     Hardcoded (non-unique role)
+```
+
+### 5️⃣ Berdevk (Spokesperson) - Specified
+```
+Address:    5F4V6dzpe72dE2C7YN3y7VGznMTWPFeSKL3ANhp4XasXjfvj
+Public Key: 0x8489bfd011f05bff909dff31d7fee6182ce058673cbf98b03a8c904f89e8f43e
+Source:     Hardcoded (non-unique role)
+```
+
+---
+
+## 🎯 Multisig Address Calculation
+
+### Sorted Member Addresses (Required for multisig):
+```
+1. 5D74yW53pg3gCaLMzGvZUNxiqTZMwFXA85bB2QYfcYh5Tdc4 (Serok)
+2. 5DFwqK698vL4gXHEcanaewnAqhxJ2rjhAogpSTHw3iwGDwd3 (Noter)
+3. 5DRTYPChot1UPDHEeJVTtuE8dLDgCVvAcWbdnc8zwwpYYjeR (Xezinedar)
+4. 5F4V6dzpe72dE2C7YN3y7VGznMTWPFeSKL3ANhp4XasXjfvj (Berdevk)
+5. 5GTRuK96TkmjUSuQnkjBJBCEmHSDSdW22ptWosxCBWACfsZp (SerokiMeclise)
+```
+
+### Threshold: 3/5
+
+### Multisig Address:
+```
+To be calculated using: calculateMultisigAddress(sortedMembers, 3)
+Formula: Substrate multisig address derivation
+```
+
+**Note:** Multisig address will be deterministically derived from sorted member addresses and threshold.
+
+---
+
+## 📋 Quick Reference
+
+### Frontend Config Location:
+```
+src/pages/ReservesDashboardPage.tsx
+```
+
+### How to Update:
+```typescript
+const SPECIFIC_ADDRESSES = {
+  Noter: '5DFwqK698vL4gXHEcanaewnAqhxJ2rjhAogpSTHw3iwGDwd3',
+  Berdevk: '5F4V6dzpe72dE2C7YN3y7VGznMTWPFeSKL3ANhp4XasXjfvj',
+};
+```
+
+### Verification:
+1. Check on-chain tiki holders for unique roles:
+   ```
+   api.query.tiki.tikiHolder(Tiki.Serok)
+   api.query.tiki.tikiHolder(Tiki.SerokiMeclise)
+   api.query.tiki.tikiHolder(Tiki.Xezinedar)
+   ```
+
+2. Verify multisig members match:
+   ```javascript
+   import { getMultisigMembers } from '@/lib/multisig';
+   const members = await getMultisigMembers(api, SPECIFIC_ADDRESSES);
+   console.log(members);
+   ```
+
+---
+
+## 🔒 Security Reminders
+
+### ✅ PUBLIC (Safe to share):
+- Account addresses (5xxx...)
+- Public keys (0xxx...)
+- Multisig configuration
+
+### 🔴 NEVER SHARE:
+- Seed phrases (12/24 words)
+- Private keys
+- Mnemonic words
+- JSON keystore passwords
+
+---
+
+## 🚀 Next Steps
+
+1. **On-chain Setup:**
+   ```bash
+   # Create wUSDT asset with multisig as admin
+   assets.create(2, <multisig_address>, 1000000)
+   assets.setMetadata(2, "Wrapped USDT", "wUSDT", 6)
+   ```
+
+2. **Verify Multisig:**
+   ```
+   Visit: http://localhost:8080/reserves
+   Check: Multisig Members tab
+   ```
+
+3. **Test Transaction:**
+   ```bash
+   # Create a test multisig tx
+   # First member initiates
+   # 2 more members approve
+   # Execute when 3/5 reached
+   ```
+
+---
+
+**Last Updated:** 2025-11-03
+**Status:** ✅ Configured and Ready