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+_model: devlog-entry
+---
+schema_version: 1
+---
+title: Initial Phase 1 MVP Release: Desktop Simulation, Behavioral Assessment, and Certificate Verification
+---
+date: 2026-08-23
+---
+author: Labyricorn
+---
+summary:
+
+Completed the Phase 1 MVP implementation of CyberSim-OS: an offline-first, browser-native cybersecurity simulation platform featuring a fictional enterprise desktop, simulated workplace applications, a 7-axis behavioral scoring engine, and verifiable cryptographic completion certificates.
+---
+tags: simulation, cybersecurity, training, offline-first, static-first, certificates, release
+---
+source_commit: 9028325dfcfce8174e45fe90f10138e90776a506
+---
+body:
+
+### Milestone Overview
+
+The Phase 1 MVP of CyberSim-OS establishes a browser-native, zero-dependency simulation environment designed to assess end-user cybersecurity behavior in a realistic workplace context.
+
+### Key Deliverables Implemented
+
+1. **Fictional Desktop Shell & Window Manager**:
+   - Original enterprise Windows-like theme with draggable and minimizable window frames, taskbar, start launcher, real-time clock, and Web Audio synthesized toast alerts.
+
+2. **Core Workplace Application Suite**:
+   - **Inlook**: Email client with RFC envelope inspector (detects typosquatted sender domains), destination link hover inspection, and SOC incident reporting.
+   - **Navigator**: Simulated web browser supporting intranet directories, security policy hubs, and simulated credential-harvesting phishing portals.
+   - **Files & Doc Viewer**: Virtual corporate storage and multi-format renderer for financial spreadsheets (`.xlsx`), security policies (`.pdf`), and approved vendor lists.
+   - **Security Center**: Endpoint threat monitoring dashboard, alert feeds, and incident tracking.
+
+3. **Behavioral Telemetry & Delayed Consequence Engine**:
+   - Granular event logging recording all learner interactions with timestamps and context.
+   - Delayed consequence scheduler that triggers realistic delayed alerts (e.g. anomalous login notifications following credential submissions) without arcade-like immediate feedback.
+
+4. **7-Axis Behavioral Assessment & After-Action Report**:
+   - Comprehensive scoring rubric measuring *Threat Detection*, *Investigation*, *Safe Handling*, *Verification*, *Incident Reporting*, and *False Positive Control* on a 0–100 scale (80 passing threshold).
+   - Pedagogical debrief modal providing score breakdowns and constructive feedback.
+
+5. **Cryptographic Certificate Verification**:
+   - SHA-256 scenario fingerprinting using the native Web Crypto API.
+   - Portable `*.cybercert` JSON credential export and standalone drag-and-drop offline verifier (`verify.html`).
+
+6. **Standalone Offline Deployment**:
+   - Bundled Python 3 local server launcher (`launcher.py`) binding strictly to `127.0.0.1`.