feat: fully reimagined local evaluation dashboard with premium glassmorphic visuals

[codeninja]

PR: Fully Reimagining the Local Evaluation Dashboard

This pull request completely upgrades the local evaluation dashboard experience for Slop Gate, transforming it from a standard layout into a premium, glassmorphic, developer-focused workspace with high-end HSL styling and real-time simulator presets.

Key Upgrades

1. Developer Workspace Visual Overhaul

• Premium Styling & Glassmorphism: Tailored a modern dark space layout using customizable HSL color tokens, neon glowing highlights (emerald, rose, cyan), soft borders, and premium typography (DM Sans + JetBrains Mono).
• Sidebar Navigation Grid: Restructured the site header into a modern sidebar configuration featuring glowing state indicators and animated border sweeps.

2. Interactive Evaluating Sandbox

• Drift Preset Simulator Launcher: Added one-click simulator presets right above the playground. Selecting a preset (e.g. Process Substitution, Premature Completion) instantly triggers scans in the auditing playground.
• Drift Analytics widgets: Integrated highly polished visual stat cards displaying loaded scenarios, active drift hits, and regex rule matches.
• Detailed Match Highlights: Polished the Collapsible accordions inside active signals to draw animated checkmarks and soft glowing matching snippets.

3. Rules IDE Workspace

• Designed a side-by-side editing panel featuring a custom code editor for patterns/drift-patterns.md alongside an interactive grammar syntax reference guide.

4. Dynamic Abstracts Metrics Cards

• Added a backend parser in server.js to process docs/drift-abstracts.md on-the-fly and display parsed drift families inside modern cards with parsed trigger tags and abstract challenges, while retaining a collapsible raw source preview fallback at the bottom.

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Actual App Screenshots (Live Captures)

Below are the actual high-resolution screenshots captured directly from the running local EJS application inside headless Chromium:

1. Auditor Evaluate Sandbox (With Live Preset Scan Match)

2. Metrics & Drift Abstracts Dashboard Cards

3. Rules & Heuristics Source Editor

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Verification & Testing

• Automated checks: All 23 unit tests pass perfectly (npm test).
• Integration/Smoke: Dashboard smoke tests execute successfully (npm run dashboard:smoke).