Update Codemagic scripts and add M4 demo guide

Normalize spacing in Codemagic job names (add space after emoji) and remove duplicated android_signing environment variable mappings for staff keystores across dev, staging, and prod workflows in codemagic.yaml. Add docs/MILESTONES/M4/demos/m4-client-note.md with the M4 demo guide (deliverables, test accounts, core improvements, and key deliverables).

docs/MILESTONES/M4/demos/m4-client-note.md

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+# KROW Workforce Platform — M4 Demo Guide
+
+**Version:** Milestone 4 (0.0.1-IlianaStaffM4 and 0.0.1-IlianaClientM4)
+**Estimated Duration:** 25-30 minutes
+
+---
+
+## 📦 Deliverables
+
+- **Client Mobile Application** (v0.0.1-IlianaClientM4)
+- **Staff Mobile Application** (v0.0.1-IlianaStaffM4)
+- **Full Demo Video** - Comprehensive walkthrough of all (M1 - M4) completed features of the mobile applications.
+
+---
+
+## 1. Demo Overview
+
+### Core Improvements
+M4 delivers three key areas of improvement:
+
+1. **Overall Application Improvements**
+   - Auth session persistence: Users stay signed in after reopening the app
+   - Stability fixes from M3 client feedback and dev team discoveries
+   - UI/UX improvements across key screens for clarity and speed
+
+2. **Client App Updates**
+   - Complete order creation flow (Rapid, Permanent, Recurring orders)
+   - Shift manager assignment support
+   - Paid/unpaid break handling in orders
+   - Complete Reports section (Daily Ops, Spend, Coverage, No-show, Performance)
+   - Cost centres in hubs for location/business unit tracking
+   - Billing approval workflow for pending bills
+
+3. **Staff App Updates**
+   - Profile completion requirements gating payments and clockings
+   - Worker benefits integration
+   - Enhanced shift discovery with filtering by location
+   - Spanish localization support
+   - AI-verified document uploads (Attire, Documents, Certificates)
+   - FAQ and Privacy Policy
+   - Worker profile visibility controls
+
+---
+
+## 2. Required Test Accounts
+
+**Client Account (Business User):**
+- Email: `legendary@krowd.com`
+- Password: `Demo2026!`
+- Client Name: "KROW"
+
+**Staff Account (Worker):**
+- Phone: `+15557654321`
+- OTP Code: `123456` (testing mode)
+- Name: "Mariana Torres"
+
+---
+
+## 3. M4 Key Deliverables
+
+✅ Stronger reliability and stability
+✅ Completed client ordering and reporting workflows
+✅ Better profile and shift tooling for staff
+✅ AI-assisted document verification
+✅ Localization support (Spanish)
+✅ Improved billing and cost tracking controls