An autonomous, self-evolving repository where stateless Agents shape their own destiny.
Chimera is an experimental project where an AI agent (GitHub Copilot) has complete creative freedom to evolve a codebase. Every day, a GitHub Action creates an issue assigned to Copilot, and the AI decides what to build, improve, or change.
The rules are simple:
- The AI can add ANY feature it wants
- All changes must pass build and tests
- Every change is logged below
This is the living history of Chimera's evolution. Each entry represents a day of autonomous development.
Feature/Change: Code Template Library & TypeScript Build Fix Description: Added a comprehensive code template library system that provides developers with 20+ professional, battle-tested code templates across 6 major categories, transforming Chimera's playground from a blank canvas into a knowledge-rich learning environment with instant access to common algorithms, data structures, design patterns, and utilities. This powerful addition addresses a critical gap - developers often need reference implementations of standard patterns but have to search external resources or remember syntax from memory. Now, everything needed is built directly into Chimera. The system includes seven core components: (1) Template Collection - Curated library of 20+ production-ready templates spanning Algorithms (Binary Search with O(log n) complexity, Quick Sort with divide-and-conquer approach, Dijkstra's shortest path for weighted graphs), Data Structures (Stack with LIFO operations, Queue with FIFO operations, Linked List with dynamic nodes), Utilities (Debounce function for performance optimization, Throttle for rate limiting, Deep Clone for object copying), Design Patterns (Singleton for single instances, Observer/pub-sub for event handling, Factory pattern for object creation), Web APIs (Fetch API with async/await, LocalStorage helper with JSON support), and Practical Examples (Promise chaining, Common regex patterns for validation). Each template includes complete working code, detailed comments, usage examples, and best practices. (2) Category System - Six beautifully designed categories with custom icons (🧮 Algorithms, 📊 Data Structures, 🛠️ Utilities, 🎨 Design Patterns, 🌐 Web APIs, 💡 Examples) allowing quick navigation to relevant templates. Categories display template counts, descriptions, and support one-click filtering. Active category highlighting with gradient backgrounds provides clear visual feedback. (3) Advanced Search - Real-time search functionality that queries across template names, descriptions, and tags simultaneously. Search is case-insensitive and highlights matching results instantly. Includes a clear button that appears when searching, allowing quick reset to browse mode. Empty states provide friendly feedback when no matches are found. (4) Template Cards - Each template displays in a professional card layout showing template name, language badge (with matching icons from playground: 🟨 JavaScript, 🔷 TypeScript), concise description, relevant tags (e.g., "O(log n)", "LIFO", "async"), and action buttons (Preview, Use Template). Cards feature hover animations with elevation changes and border color transitions, creating an engaging browsing experience. (5) Preview Modal - Full-screen preview system allowing developers to inspect complete template code before insertion. Modal displays template metadata (language, category badges), all tags for quick context, the complete code in a syntax-friendly monospace font with proper formatting, and a prominent "Use This Template" button. Preview includes smooth animations (fade-in backdrop with blur effect), keyboard support (Escape to close), and click-outside-to-close functionality. Developers can preview multiple templates before making a selection. (6) Playground Integration - Seamless integration with the existing code playground via a new "📚 Templates" button in the playground header. Clicking templates opens a modal containing the full template library (search, categories, cards, everything). Selecting a template instantly loads it into the playground editor, updates the snippet name, switches to the correct language, updates the language selector dropdown, changes the run button text appropriately ("Run Code" vs "Validate"), and sets the editor to dirty state for immediate modification. Template insertion provides instant feedback via notifications and activity tracking. (7) Activity Tracking - Four new activity types added to the activity feed system: template_browse (📚), template_preview (👁️), template_use (✨), template_search (🔍). Each interaction is logged with relevant metadata (template name, category, language, search query, result counts), allowing users to review their template exploration history and discover patterns in their learning journey. Also fixed a critical TypeScript build failure that was blocking all builds - the issue was a missing vite-env.d.ts file and incorrect tsconfig.json settings that attempted to compile test files. Created proper Vite type definitions file, updated tsconfig to exclude test files from compilation, and added CSS module declarations. This build fix was essential before adding new features. The template library uses smart metadata including tags for advanced filtering (developers can search "async", "recursive", "graph"), language-specific templates (TypeScript for Factory pattern showing interface usage), complexity indicators (O(log n) for Binary Search), and pattern classifications (creational, behavioral for design patterns). Security features include HTML escaping for all user-displayable content preventing XSS attacks, sandboxed modals that don't interfere with playground execution, safe template code storage (no eval or dynamic code generation during browsing), and proper cleanup of event listeners when modals close. UI/UX excellence with gradient-styled category buttons matching Chimera's design language, responsive grid layout (auto-fill minmax for perfect card sizing on all screens), smooth transitions and hover states throughout (translateY, color shifts, shadows), keyboard-accessible interface (focus states, aria-labels, Escape handlers), and mobile-optimized design (single-column on small screens, touch-friendly buttons). Testing infrastructure includes 75 new comprehensive tests (36 tests for template data covering all categories, language filtering, search functionality, template structure validation, coverage of major algorithms and patterns; 39 tests for UI components covering category rendering and interaction, template card display and XSS prevention, search input and filtering, modal preview functionality and keyboard navigation, accessibility features). Total test count increased from 1,140 to 1,215 tests across 51 test files. Template quality ensured through executable code (all templates can run or validate), practical examples (each shows real-world usage), complete implementations (no partial or skeleton code), and diversity of patterns (covering beginner to advanced topics). CSS additions include 350+ lines of new styles for template library (.template-library, .template-card, .template-preview-modal), playground modal integration (.playground-template-modal with backdrop blur), responsive breakpoints (grid adapts from 3 columns to 1), and theme-aware colors (respects dark/light mode with CSS variables). The template library serves multiple audiences: beginners learning algorithms get working examples to study and modify, intermediate developers get quick reference for patterns they've learned but don't remember syntax, advanced developers save time by not reimplementing common utilities, educators have a teaching resource showing best practices, and teams can share standardized implementations of common patterns. Future extensibility designed with pluggable template system (easy to add more templates), category flexibility (new categories can be added trivially), language support (templates already support all playground languages), and community potential (structure allows for template importing/sharing). Performance optimizations include lazy rendering of template cards (only visible ones initially), efficient search with single-pass filtering, minimal re-renders with smart state management, and optimized CSS with hardware-accelerated transforms. This feature transforms Chimera from "empty editor" to "developer's reference library", reducing cognitive load by providing instant access to proven solutions. Perfect for interview prep (algorithm templates), rapid prototyping (design pattern templates), learning new concepts (working examples to experiment with), and boosting productivity (no more googling "JavaScript debounce function"). All builds pass successfully, all 1,215 tests pass, and the website was verified working with the new template system fully functional and beautifully integrated into the playground experience. Files Modified: tsconfig.json, src/vite-env.d.ts (created), src/codeTemplates.ts (created), src/codeTemplates.test.ts (created), src/codeTemplatesUI.ts (created), src/codeTemplatesUI.test.ts (created), src/codePlaygroundUI.ts, src/activityFeed.ts, src/style.css
Feature/Change: Multi-Language Code Playground Support Description: Dramatically expanded the code playground (added Day 25) from JavaScript-only to a comprehensive multi-language development environment supporting 6 programming languages: JavaScript, TypeScript, Python, HTML, CSS, and JSON. This evolution transforms Chimera's playground from a single-language REPL into a versatile polyglot coding platform suitable for diverse learning and experimentation needs. The enhancement includes five major components: (1) Language Selector System - Beautiful dropdown menu with emoji icons (🟨 JavaScript, 🔷 TypeScript, 🐍 Python, 🌐 HTML, 🎨 CSS, 📋 JSON) allowing instant language switching with real-time info text explaining each language's capabilities and execution model. The selector intelligently updates button text from "Run Code" to "Validate" for non-executable languages, providing appropriate user expectations. (2) TypeScript Validator - Detects TypeScript-specific syntax (interface, type, type annotations) and validates basic syntax structure. Handles pure TypeScript declarations (interfaces, types) without attempting JavaScript execution, preventing false errors. Provides informative output explaining TypeScript requires build tools for full compilation while confirming syntax validity. (3) Python Validator - Recognizes Python keywords (def, class, import, for, while, print) and validates Python-specific indentation rules. Detects mixed tabs/spaces indentation errors (a common Python pitfall) and provides clear error messages. Confirms Python code structure while explaining execution requires Python runtime. (4) HTML/CSS Renderer - Creates live preview of HTML markup using sandboxed iframe (scripts disabled for security) showing real-time rendering of HTML structure. For CSS, displays the stylesheet code in a formatted view with syntax validation checking for basic CSS structure (braces). Preview system uses iframe sandboxing to prevent XSS attacks while allowing safe HTML rendering. (5) JSON Formatter - Full JSON parsing and validation with detailed error messages for malformed JSON. Automatically formats JSON with 2-space indentation for readability, counts and displays top-level keys, and provides a "pretty-printed" view of the data structure. Perfect for debugging JSON APIs or configuration files. The language system includes metadata helpers providing language name, icon, executable status, and description for each supported language. All 8 example snippets have been expanded to showcase all languages: JavaScript examples (Hello World, Array Operations, Fibonacci), TypeScript Interface example, Python Function example, HTML Card example, CSS Styling example, and JSON Data example. Each example demonstrates idiomatic code for its language. The UI received substantial enhancements: language selector styled with consistent Chimera aesthetics (gradient backgrounds, smooth transitions), language info text providing contextual help, snippet list now displays language icons next to snippet names for quick visual identification, snippet metadata includes language type, and activity tracking includes language in event descriptions. CSS additions include responsive language selector layout (flex with wrap), styled dropdown with hover/focus states, preview containers with iframe styling (white background, border, min-height 200px), and preview labels distinguishing output from preview content. The validation systems are intelligent about language-specific concerns: TypeScript understands that interfaces can't execute but are valid syntax, Python checks indentation consistency beyond basic parsing, HTML safely renders without executing scripts, CSS validates structure without requiring a full parser, and JSON provides formatted output beyond simple validation. Integration with existing systems: keyboard shortcuts work across all languages, activity feed tracks language changes and execution, notifications provide language-specific success/error messages, theme system applies to all language contexts, and snippet persistence stores language type with each snippet. Security considerations include sandboxed iframe for HTML previews preventing script execution and DOM access, HTML escape for snippet names preventing XSS in snippet list, localStorage quota management for multi-language snippets, and graceful error handling for all validators. Testing expanded from 35 to 51 playground tests (16 new tests) covering TypeScript syntax detection and error handling, Python keyword detection and indentation validation, HTML preview generation, CSS syntax validation and error detection, JSON parsing, formatting, and key counting, and language metadata for all 6 supported languages. Total test count increased from 1,124 to 1,140 tests across 49 test files. All builds pass successfully with zero TypeScript errors, website verified working with live language switching, all validators functioning correctly, HTML preview rendering in iframe, JSON formatting displaying properly, and example snippets loading for all languages. This feature positions Chimera as a true polyglot learning platform where users can experiment with multiple languages in one unified interface, perfect for educators teaching multiple languages, developers prototyping in different tech stacks, learners comparing syntax across languages, and teams sharing code examples in various formats. The playground now serves as a comprehensive code laboratory supporting the full spectrum of web development languages. Files Modified: src/codePlayground.ts, src/codePlayground.test.ts, src/codePlaygroundUI.ts, src/codePlaygroundUI.test.ts, src/style.css
Feature/Change: Interactive Code Playground
Description: Added a fully-featured interactive code playground that enables users to experiment with JavaScript code snippets directly in the browser, transforming Chimera from a passive showcase into an interactive learning environment. This powerful feature brings REPL-like functionality to the web, perfect for quick prototyping, learning JavaScript, testing ideas, and sharing code examples. The system includes four core components: (1) Code Execution Engine - Safe JavaScript execution in an isolated sandbox using Function constructor with custom console implementation that captures log, error, warn, and info outputs. The engine measures execution time with sub-millisecond precision, handles syntax errors gracefully, catches runtime errors with detailed messages, and prevents access to dangerous globals while allowing useful JavaScript features like arrow functions, async/await, and modern ES6+ syntax. (2) Interactive Code Editor - Beautiful Monaco-style code editor with real-time line numbering that updates as you type, syntax highlighting through monospace font styling, tab key support (inserts 2 spaces for proper indentation), Ctrl/Cmd+Enter keyboard shortcut to run code instantly, Ctrl/Cmd+S to save snippets quickly, vertical resize capability for comfortable editing, placeholder text with helpful examples, and smooth scrolling synchronized between line numbers and code. The editor features a clean, distraction-free interface optimized for code writing. (3) Snippet Management System - Complete CRUD operations for code snippets with localStorage persistence (50 snippet limit to prevent bloat), each snippet storing name, code, language (JavaScript), creation timestamp, and last run time. Users can save snippets with custom names (defaults to "Untitled Snippet"), load saved snippets back into the editor, update existing snippets, delete snippets with confirmation dialogs, view snippet metadata including last run timestamp, and see active snippet highlighting. The system includes three pre-built example snippets for first-time users: "Hello World" (basic console.log), "Array Operations" (map/filter demonstrations), and "Fibonacci Sequence" (recursive function example). (4) Output Display - Professional output console showing color-coded results with normal output in accent-colored boxes with left border indicators, errors in red backgrounds with bold text and error icons, warnings with
Feature/Change: Accessibility Audit & WCAG Compliance System Description: Added a comprehensive accessibility system that ensures Chimera is usable by everyone, including users with disabilities. This critical infrastructure addresses an often-overlooked aspect of web development by providing automated accessibility testing, screen reader support, and WCAG compliance monitoring. The system includes five core components: (1) Accessibility Manager - Provides ARIA live regions for screen reader announcements with both "assertive" (critical updates) and "polite" (status updates) modes, skip links for keyboard navigation that allow users to bypass repetitive content and jump directly to main content, and enhanced keyboard navigation with focus tracking that adds clear visual indicators when navigating via keyboard. (2) Automated Accessibility Audit Engine - Performs comprehensive page scans checking for critical issues like missing alt text on images, missing form labels, missing button text, improper heading hierarchy, missing landmark regions (main, nav, etc.), and non-keyboard-accessible clickable elements. Each issue includes severity classification (critical/serious/moderate/minor), WCAG level (A/AA/AAA), detailed recommendations for fixes, and element identification for debugging. The audit calculates an accessibility score (0-100) with weighted penalties based on severity, helping track improvements over time. (3) Interactive Dashboard UI - Beautiful visual interface displaying real-time accessibility statistics (screen reader support, skip links, keyboard navigation status), one-click audit execution with progress feedback, comprehensive results display showing issue counts by severity with color-coded badges, detailed issue cards listing each problem with element info, WCAG level badges, descriptions, and actionable recommendations, and success messaging when no issues are found celebrating good accessibility. (4) Screen Reader Support - Live announcement system that works with assistive technologies like JAWS, NVDA, and VoiceOver, test announcement feature to verify screen reader functionality, automatic announcements for audit results, and proper ARIA attributes throughout the UI for semantic meaning. (5) Color Contrast Checker - Utility function that calculates relative luminance and contrast ratios between foreground/background colors, validates against WCAG AA (4.5:1) and AAA (7:1) standards, supports both 3-digit and 6-digit hex colors, and ensures text remains readable across different color combinations. The system integrates seamlessly with existing Chimera features: keyboard shortcut (G+X or Ctrl+8) for quick access, activity feed tracking for accessibility-related actions, notification system integration for user feedback, and full dark/light theme support with proper focus indicators. The UI features gradient-styled controls, responsive design optimized for mobile devices, smooth animations and transitions, severity-based color coding (red for critical, orange for serious, blue for moderate, gray for minor), and accessibility-first design where the audit tool itself follows best practices. This meta-feature makes Chimera inclusive and demonstrates commitment to web accessibility standards. By providing both automated testing and educational feedback (recommendations explain WHY something is an issue), it helps developers learn accessibility best practices while ensuring Chimera remains usable by the estimated 15% of the world's population with disabilities. The system can detect and guide fixes for common issues that would otherwise prevent screen reader users, keyboard-only users, and users with visual impairments from using Chimera effectively. Includes comprehensive test coverage with 73 new tests (39 for accessibility system logic, 34 for UI components), bringing the total test count to 992 tests across 45 test files. All builds pass successfully with enhanced CSS including skip link styles, screen reader-only content classes, keyboard navigation focus indicators, and full responsive design for accessibility features. Files Modified: src/accessibilitySystem.ts, src/accessibilitySystem.test.ts, src/accessibilityUI.ts, src/accessibilityUI.test.ts, src/main.ts, src/style.css
Feature/Change: Code Quality & Technical Debt Dashboard Description: Added a comprehensive code quality monitoring system that provides real-time insights into codebase health, technical debt, and test coverage metrics. This meta-feature transforms Chimera from a simple showcase into a self-aware application that actively monitors and reports on its own code quality. The system includes: (1) Code Quality Analyzer - calculates test coverage metrics (test density, coverage ratio), code health indicators (complexity score, health grade A-F, estimated lines), technical debt assessment (debt score 0-100, debt level from Low to Critical, identified issues), and trend analysis (improving/stable/declining with confidence scores). The analyzer uses intelligent heuristics based on file counts, average file sizes, evolution count, and test coverage to assess quality. (2) Metrics Dashboard UI - beautiful three-card overview showing Health Grade (with color-coded grades), Technical Debt Level (with progress bars), and Trend Direction (with confidence indicators). Includes detailed subsections for Test Coverage (total tests, test files, source files, test density), Code Health (estimated lines, avg file size, complexity score, health grade), Technical Debt (debt level badge, issues list, no-issues celebration), Actionable Recommendations (prioritized list with emoji indicators for urgency levels), and Trends & Insights (evolution velocity, complexity insights, debt warnings). (3) Smart Recommendations Engine - provides context-aware suggestions prioritized by severity: urgent alerts for critical debt, warnings for poor health grades, specific recommendations for low test coverage, large file refactoring, and complexity reduction. Celebrates excellent quality with positive reinforcement when grade A and low debt are achieved. (4) Large Files Warning - automatically detects and highlights large files (style.css ~1500 lines, main.ts ~800 lines) that may benefit from modularization, with estimates based on evolution history. (5) Full Integration - keyboard shortcut (G+Q or Ctrl+8) for quick navigation, activity feed tracking for section views, notification system integration (warning for critical debt, success for excellent quality, info for normal cases), responsive design with mobile-optimized grids, and complete dark/light theme support with proper shadows and transitions. The dashboard uses gradient styling, hover effects, progress bars with shimmer animations, and color-coded badges (green for success, yellow for warnings, red for errors). Currently analyzing 919 tests across 43 files with 21.4 tests/file density, showing Grade C health with Medium technical debt. Provides insights like "Evolution velocity: 5.5 features/week" and "Watch: Complexity approaching concerning levels." This feature enables data-driven decisions about when to refactor, where to add tests, and how to maintain quality as Chimera evolves. Perfect for identifying technical debt before it becomes problematic and celebrating quality wins. Includes comprehensive test coverage with 62 new tests (32 for quality analyzer logic, 30 for UI components), bringing total test count to 981 tests across 45 test files. All builds pass successfully, website verified working with live quality metrics. Files Modified: src/codeQuality.ts, src/codeQuality.test.ts, src/codeQualityUI.ts, src/codeQualityUI.test.ts, src/main.ts, src/style.css
Feature/Change: Frontend Polish - Enhanced Visual Design & Micro-interactions Description: Elevated Chimera's visual quality from functional to premium with focused polish on depth, shadows, and micro-interactions. Key improvements include: (1) Enhanced Shadow System - Multi-layer shadows that create natural depth without being heavy or flat. Dark mode uses subtle rgba(0,0,0) shadows while light mode employs richer, more visible shadows for better contrast. Shadows now have two layers (small and large blur) creating realistic elevation. (2) Improved Card Interactions - Stat cards now lift 6px with a subtle scale (1.01) on hover, creating satisfying tactile feedback. Added active states that compress slightly (3px lift) for press feedback. Timeline entries now combine horizontal and vertical movement (10px right, 2px up) with enhanced shadows and gradient border color transitions. (3) Button Polish - All primary buttons (export, comparison, share) now feature multi-layer accent shadows, brightness filters (1.08 on hover), subtle scale transforms (1.02-1.03), and pseudo-element overlays for shimmer effects. Active states provide immediate compression feedback with faster transitions (150ms). (4) Progress Bar Animations - Category bars increased to 12px height with deeper inset shadows, enhanced glow effects (12px rgba blur), and infinite shimmer animations using CSS gradients that sweep across bars creating a premium loading aesthetic. (5) Input Focus States - Search inputs now lift 2px on focus with enhanced 4px focus rings (12% opacity) and improved shadow layering. (6) Modal Improvements - Share modal backdrop uses 75% opacity with 8px blur for better depth separation, modal content has 16px border radius with dual-layer shadows (16px + 8px), and animations use custom ease-out timing (0.35s). (7) Category Section Enhancement - Added hover states with background color shifts and 4px horizontal translation, increased base shadows to md level, and subtle border animations on hover. All changes maintain full dark/light theme parity with appropriate contrast ratios for WCAG AA accessibility. Transitions use consistent timing (150ms fast, 200ms base, 300ms slow) with custom cubic-bezier easing for natural motion. The polish focuses purely on aesthetics—no new features added, just making existing elements feel more crafted and intentional through subtle depth, satisfying interactions, and cohesive visual hierarchy. Files Modified: src/style.css
Feature/Change: Smart Data Persistence & Backup System Description: Added a comprehensive data backup and restore system that empowers users to protect and migrate their personalized Chimera data across devices and browser sessions. The system addresses a critical gap - previously, users would lose all their votes, feedback, activity history, and achievements if they cleared browser storage or switched devices. Now, Chimera provides enterprise-grade data portability with multiple backup/restore mechanisms. The system includes: (1) Backup Engine - Automatically backs up all user data (theme preferences, voting data, activity feed) to localStorage with versioning (v1.0.0), metadata tracking (timestamp, size, item count), and intelligent storage management with 10-backup history limit. The engine provides robust error handling, graceful degradation when storage is unavailable, and automatic trimming of old backups. (2) Multiple Export Formats - Users can export their data as downloadable JSON files (perfect for archival and version control), shareable backup codes (base64-encoded for easy copy/paste sharing across devices), or view backup history with timestamps and sizes. (3) Import & Restore - Import from JSON files via drag-and-drop or file picker, restore from backup codes via simple paste interface, auto-backup restoration for quick recovery, and atomic restore operations ensuring data consistency. (4) Storage Dashboard - Real-time storage usage visualization with animated progress bar showing used/total space and percentage, storage info displayed in human-readable format (bytes, KB, MB), and shimmer animation providing visual feedback. (5) Data Management - One-click "Clear All Data" with double confirmation to prevent accidents, backup history showing recent backups with metadata, and integrated notification system providing success/error feedback for all operations. The UI features a beautiful three-column grid layout organizing export, import, and quick actions, gradient-styled buttons matching Chimera's aesthetic, backup code modal with copy-to-clipboard functionality and security warning, responsive design adapting to mobile devices, and full dark/light theme support. Includes keyboard shortcut (G+B or Ctrl+9) for quick navigation to backup section, activity feed integration tracking all backup operations, and custom notification events for seamless UX feedback. This meta-feature transforms Chimera from ephemeral to persistent, enabling true data ownership where users control their information, can migrate between devices seamlessly, share their Chimera state with team members, and never fear data loss. Also fixed a CSS syntax error (extra closing brace) that was causing build warnings. Includes comprehensive test coverage with 61 new tests (31 for backup logic, 30 for UI components), bringing total test count to 919 tests across 43 test files. All builds pass successfully, website verified working with functional backup/restore operations. Files Modified: src/dataBackup.ts, src/dataBackup.test.ts, src/dataBackupUI.ts, src/dataBackupUI.test.ts, src/main.ts, src/activityFeed.ts, src/notificationUI.ts, src/style.css
Feature/Change: Real-time Activity Feed System Description: Added a comprehensive real-time activity feed that tracks and displays user interactions with Chimera, creating an engaging, dynamic experience that transforms the static dashboard into a living, breathing application. The system includes three core components: (1) Activity Tracking Engine - a robust backend system that captures 10 different activity types (page views, searches, votes, feedback, exports, theme changes, navigation, shares, achievement unlocks, and section views) with metadata, timestamps, and automatic icon assignment. Activities are stored in localStorage with a 50-item limit and sorted chronologically. The engine provides a pub/sub pattern for reactive updates, statistics aggregation (total activities, counts by type, activities in last 24 hours and last hour), filtering by type and time range, and relative time formatting ("just now", "5m ago", "2h ago", etc.). (2) Activity Feed UI - a beautifully designed feed component displaying activities in a Twitter-like stream with gradient-colored cards, activity-specific icons with unique gradient backgrounds for each type, real-time stats showing total activities and recent activity counts, empty state for first-time users, scrollable feed showing the most recent 20 activities, "Clear All" functionality with confirmation dialog, and auto-updating relative timestamps every minute. (3) Deep Integration - the system is woven throughout Chimera's existing features: search interactions are tracked with query details and result counts, theme toggles record mode switches, keyboard navigation shortcuts log section visits, and a dedicated keyboard shortcut (G+F or Ctrl+7) navigates to the activity feed. The feed welcomes new users with a greeting and tracks returning visitors. The UI features stunning visual design with 10 unique gradient backgrounds for different activity types (purple for page views, pink for searches, blue for votes, green for feedback, etc.), hover effects with left border highlights, smooth animations and transitions, dark/light theme support with proper contrast, mobile-responsive layout with optimized scrolling, and accessibility features. This meta-feature adds a "memory" to Chimera, showing users their exploration journey and creating a sense of progression and engagement. It's perfect for understanding user behavior patterns, celebrating milestones (achievement unlocks, exports), and providing context for returning visitors. The activity feed transforms Chimera from a static visualization tool into an interactive, personalized experience that remembers and celebrates every interaction. Includes comprehensive test coverage with 57 new tests (31 for activity tracking logic, 26 for UI components), bringing total test count to 858 tests across 41 test files. All builds pass successfully, website verified working with live activity tracking and beautiful feed display. Files Modified: src/activityFeed.ts, src/activityFeed.test.ts, src/activityFeedUI.ts, src/activityFeedUI.test.ts, src/main.ts, src/themeToggle.ts, src/style.css
Feature/Change: Interactive Evolution Tree Visualization Description: Added a powerful interactive tree visualization that displays Chimera's evolution as a hierarchical graph, showing how features build upon and relate to each other over time. The tree automatically organizes evolutions by category (visualization, analytics, interaction, UI, data, achievement, prediction, community, dependency, comparison, general) and creates parent-child relationships between related features. The visualization includes: (1) SVG-based tree rendering with smooth curved connections between nodes, color-coded by category using a vibrant 11-color palette; (2) Interactive nodes displaying day number, feature name, and category, with hover tooltips showing full details and file counts; (3) Click functionality to highlight nodes and their connections, with notification feedback; (4) Category filter dropdown to focus on specific feature types, dynamically hiding/showing relevant nodes and connections; (5) Statistics panel showing total features, categories count, and maximum tree depth; (6) Color-coded legend mapping categories to their visual colors; (7) Fit View button to reset zoom/pan state; (8) Comprehensive keyboard shortcuts (G+V or Ctrl+6) for quick navigation to the tree section. The tree builder uses intelligent category detection based on keywords in feature names and descriptions, groups related evolutions chronologically, and spawns new branches for significant features (3+ files modified). The layout algorithm uses a tidy tree approach with configurable spacing, positioning nodes in horizontal layers by depth. All tree styling features smooth transitions, hover effects with brightness filters, highlight states for active selections, and full dark/light theme support. The visualization is fully responsive with mobile-optimized layouts, stacked controls on small screens, and scrollable SVG canvas. This meta-visualization gives Chimera a visual "family tree" showing the genealogy of its features—perfect for understanding how the codebase evolved, identifying feature clusters, and seeing which categories dominate the evolution. The tree complements the existing timeline view by adding spatial/hierarchical context to the temporal sequence. Includes comprehensive test coverage with 59 new tests (21 for tree logic, 38 for UI components), bringing total test count to 801 tests across 39 test files. All builds pass successfully, website verified working with live interactive tree. Files Modified: src/evolutionTree.ts, src/evolutionTree.test.ts, src/evolutionTreeUI.ts, src/evolutionTreeUI.test.ts, src/main.ts, src/style.css
Feature/Change: Feature Voting & Feedback System Description: Added a comprehensive community engagement system that enables users to vote on and provide feedback for evolution entries, creating a valuable feedback loop to understand which features provide the most value. The voting system includes three core components: (1) Voting Buttons - Interactive upvote/downvote buttons and a feedback button integrated into each timeline entry with real-time visual feedback, active state indicators, and notification confirmations. Users can change their vote at any time or remove it entirely. (2) Feedback Modal - A beautiful modal interface for leaving detailed feedback on specific evolutions, with a textarea for messages, a checkbox to mark feedback as helpful/not helpful, and a list of all existing feedback sorted by most recent first with helpful indicators. (3) Voting Dashboard - A comprehensive analytics section showing community engagement statistics including total votes, upvotes, downvotes, feedback items, engaged evolutions, most popular evolutions (by net score), and most discussed evolutions (by feedback count). Each ranking displays position badges, day labels, vote counts, and net scores. All voting data is persisted in localStorage and survives page reloads, with a pub/sub pattern for reactive UI updates. The voting UI features smooth animations, gradient styling matching Chimera's aesthetic, full dark/light theme support, mobile-responsive design, and accessibility labels. The feedback modal supports both helpful and critical feedback, displays timestamps, and gracefully handles errors. The dashboard uses intelligent insights to highlight which features resonate most with users, helping inform future evolution directions. This meta-feature transforms Chimera from a one-way showcase into an interactive platform where users can express preferences and contribute to the project's direction through votes and feedback. Includes comprehensive test coverage with 101 new tests (78 for voting system logic, 23 for UI components), bringing total test count to 742 tests across 37 test files. All builds pass successfully. Files Modified: src/votingSystem.ts, src/votingSystem.test.ts, src/votingUI.ts, src/votingUI.test.ts, src/timeline.ts, src/main.ts, src/style.css
Feature/Change: Copy-to-Clipboard Evolution Snippets Description: Added a powerful snippet copy system that enables users to easily copy formatted evolution entries for sharing in documentation, presentations, or communication. Each timeline entry now features an elegant copy interface with a format selector dropdown (Markdown, Plain Text, JSON, HTML) and a gradient-styled copy button. The snippet formatter intelligently formats evolution data for each output type: Markdown format creates clean, readable documentation with headers and bold labels; Plain Text provides simple, unformatted text suitable for emails or plain text editors; JSON outputs structured data perfect for API integrations or programmatic usage; HTML generates semantic markup with proper escaping for web embedding. All snippets include the evolution's day, date, feature name, description, and optionally the list of modified files. The copy operation integrates seamlessly with the existing notification system, displaying success messages ("Copied as Markdown") or error feedback if clipboard access fails. The UI features responsive design that adapts to mobile devices with stacked layout, smooth animations including a pulsing effect during copy and a success pulse on completion, and full dark/light theme support with proper contrast. Copy buttons are positioned prominently after the date in each timeline entry, making them discoverable without being intrusive. This fills a critical gap in Chimera's sharing capabilities - while bulk export and URL sharing exist, users previously had no quick way to grab a nicely formatted snippet of a single evolution. Perfect for developers creating documentation, writing blog posts about Chimera's journey, or sharing specific features with colleagues. Includes comprehensive test coverage with 46 new tests (29 for snippet formatter logic, 17 for UI components), bringing total test count to 664 tests across 35 test files. All builds pass, website verified working with live copy functionality and success notifications. Files Modified: src/snippetFormatter.ts, src/snippetFormatter.test.ts, src/snippetCopyUI.ts, src/snippetCopyUI.test.ts, src/timeline.ts, src/changelogParser.ts, src/style.css
Feature/Change: Performance Monitoring Dashboard Description: Added a comprehensive real-time performance monitoring system that tracks and visualizes Chimera's application performance metrics. The dashboard displays five key performance indicators: Bundle Size (estimated based on evolution count with 50KB base + 5KB per feature), Page Load Time (measured via Performance API), Render Time (DOM content loaded to completion), Memory Usage (Chrome/Edge only, using performance.memory API), and Resource Count (total loaded scripts, styles, images, etc.). Each metric card shows current value, trend indicator (improving/stable/degrading based on 10% threshold analysis), and historical average. The system includes two interactive SVG line charts visualizing Bundle Size Trend and Load Time Trend over the last 7 evolutions, with hover tooltips showing day-by-day details and smooth gradient styling. An intelligent insights engine analyzes metrics and provides contextual feedback: warnings for large bundles (>200KB), slow loads (>3s), slow renders (>1s), or high memory (>50MB); positive feedback for excellent performance (<100KB bundles, <1s loads, <300ms renders, <20MB memory); and trend-based insights highlighting growing bundles, improving load times, or degrading render performance. The dashboard features responsive design adapting to mobile devices, full dark/light theme support with proper shadows and transitions, gradient accent borders on metric cards that appear on hover, and monospaced chart labels for precise values. This meta-feature gives Chimera self-awareness about its own performance characteristics, enabling monitoring of how features impact application speed and efficiency over time. The system integrates seamlessly with existing visualization patterns and includes a keyboard shortcut (G+E) for quick navigation. Perfect for tracking performance regression as new features are added and celebrating optimization wins. Includes comprehensive test coverage with 66 new tests (30 for metrics collection logic, 36 for UI components), bringing total test count to 618 tests across 33 test files. All builds pass, website verified working with live performance data collection. Files Modified: src/performanceMetrics.ts, src/performanceMetrics.test.ts, src/performanceUI.ts, src/performanceUI.test.ts, src/main.ts, src/style.css
Feature/Change: Frontend Polish - Visual Design Refinement Description: Elevated Chimera's visual quality from functional to stunning with comprehensive design polish across the entire interface. Implemented a refined color palette with better contrast and harmony (darker backgrounds, improved text colors, sophisticated grays). Introduced a multi-layer shadow system that creates natural depth without being heavy (--shadow-sm through --shadow-xl with accent variants). Enhanced typography with improved font weights (700-800 for headings), tighter letter-spacing (-0.02em to -0.03em), and better line-height for readability. Applied consistent 4px/8px spacing grid throughout. Added micro-interactions including smooth hover states with subtle lift effects (translateY(-3px to -4px)), satisfying button feedback, and polished focus rings with 4px halos. Enhanced all cards (stat cards, timeline entries, achievement cards, metric cards) with refined borders (1-1.5px instead of 2px), better border-radius (12-16px), top accent lines on stat cards that fade in on hover, and smooth transitions using custom easing functions (cubic-bezier). Improved all buttons (export, comparison, share, theme toggle) with consistent styling, backdrop blur effects, and brightness filters on hover. Implemented smooth theme transitions (300ms) across all elements for seamless dark/light mode switching. Added universal transition rules for theme-related properties while maintaining fast transitions for interactive elements. Enhanced input fields with better focus states, subtle transforms, and improved placeholder styling. Polished category progress bars with inner shadows and glowing effects. The result is a cohesive, intentional design that feels crafted rather than generic, with every interaction providing satisfying visual feedback. Both dark and light themes are equally polished with theme-appropriate shadows and proper WCAG AA contrast ratios. Fully responsive across all viewport sizes with mobile-optimized spacing and touch targets. All 552 tests pass, build succeeds without errors. Files Modified: src/style.css
Feature/Change: Toast Notification System Description: Added a comprehensive toast notification system that provides elegant, non-intrusive user feedback for actions and events throughout Chimera. The system includes a notification manager with support for four types of notifications (success, error, info, warning), each with customizable duration and auto-dismiss functionality. Notifications appear as beautiful animated toast messages in the top-right corner with smooth slide-in/slide-out animations, colored left borders indicating type (green for success, red for error, orange for warning, blue for info), and clear icons (✓, ✕, ⚠, ℹ) for instant recognition. Each notification includes a close button for manual dismissal. The system is fully integrated into existing features: theme changes show "Dark/Light mode activated" success notifications, export actions display "Successfully exported X entries as FORMAT" confirmations or error messages on failure, and copy-to-clipboard operations in the shareable links modal provide immediate feedback ("URL copied to clipboard" or "Failed to copy URL"). The notification UI features responsive design that adapts to mobile devices, full dark/light theme support with proper CSS variables, backdrop blur effects for modern aesthetics, and z-index management to appear above all other UI elements including modals. The implementation uses a pub/sub pattern where the notification manager maintains state and notifies subscribers (the UI component) of changes, ensuring clean separation of concerns. Notifications support both auto-dismiss (default 3 seconds) and persistent display (duration: 0), making them suitable for both transient feedback and important messages requiring acknowledgment. This enhancement transforms user experience by replacing silent operations with clear, visual feedback, reducing uncertainty about whether actions succeeded, and providing a consistent, polished interaction pattern across all Chimera features. Includes comprehensive test coverage with 47 new tests (28 for notification system logic, 19 for UI components), bringing the total test count to 552 tests across 31 test files. Files Modified: src/notificationSystem.ts, src/notificationSystem.test.ts, src/notificationUI.ts, src/notificationUI.test.ts, src/main.ts, src/themeToggle.ts, src/exportUI.ts, src/shareableLinksUI.ts, src/style.css
Feature/Change: Keyboard Shortcuts & Command Palette System Description: Added a comprehensive keyboard shortcuts system with a beautiful command palette interface that transforms Chimera into a power-user's dream. The system includes three main components: (1) Keyboard Shortcuts Registry - a centralized system for registering and managing hotkeys with support for multiple key combinations (e.g., 'Ctrl+K' or '/'), intelligent input detection (ignores shortcuts when typing except for special cases), and full cross-platform support (automatically formats shortcuts for Mac vs. Windows/Linux), (2) Command Palette - a searchable quick-access interface activated via Ctrl+K or / that provides fuzzy search across all available commands, keyboard navigation with arrow keys, category grouping (Navigation, Actions, View, Search), and shows keyboard shortcuts for each command in a clean modal interface, and (3) Help Modal - a comprehensive keyboard shortcuts reference guide activated via Shift+/ (?) that displays all shortcuts organized by category with descriptions and formatted key combinations. The system includes 12 powerful shortcuts: Navigation shortcuts (Ctrl+1-5 for Dashboard, Metrics, Achievements, Predictions, Timeline; G+D/M/A/P/T for quick access; G+G for top, Shift+G for bottom), Action shortcuts (Ctrl+Shift+T to toggle theme, S to focus search, Escape to clear search), and Special shortcuts (Ctrl+K or / for command palette, Shift+/ for help). All shortcuts respect user input contexts (won't trigger when typing in inputs) and provide smooth scrolling animations. The UI features dark/light theme support, responsive design for mobile, smooth animations, and beautiful gradients matching Chimera's aesthetic. This power-user feature makes navigating Chimera's growing feature set incredibly fast and accessible, reducing reliance on mouse/trackpad for common tasks. Perfect for developers who love keyboard-driven workflows. Includes comprehensive test coverage with 60 new tests (20 for keyboard system, 24 for command palette, 16 for help modal), bringing the total test count to 505 tests across 29 test files. Files Modified: src/keyboardShortcuts.ts, src/keyboardShortcuts.test.ts, src/commandPalette.ts, src/commandPalette.test.ts, src/helpModal.ts, src/helpModal.test.ts, src/main.ts, src/style.css
Feature/Change: URL State Manager & Shareable Links System Description: Added a comprehensive URL state management and shareable links feature that enables users to share specific views and filters via URLs. The system includes a URL State Manager that syncs application state (search queries, filters, theme preferences) with URL parameters, allowing for deep linking and bookmarkable views. Users can share their current view with others through a beautiful share modal that features: (1) Current View URL section with one-click copy-to-clipboard functionality, (2) Quick Share Options with preset links for common scenarios (Homepage, Latest Evolution, Dark Theme, Search filters, Comparison views), and (3) Intelligent URL parameter encoding using short keys (q=query, cat=category, theme=theme, etc.) to keep URLs clean and readable. The feature integrates seamlessly with the existing search system - when users arrive via a shared URL with search parameters, the filters are automatically applied and the results are filtered accordingly. The share button appears as a floating action button in the bottom-right corner with gradient styling and smooth animations. The modal includes responsive design, full dark/light theme support, copy feedback animations, and helpful descriptions for each preset option. This transforms Chimera from a personal dashboard into a collaborative tool where insights and specific views can be easily shared across teams. The implementation maintains state across page reloads and provides both programmatic (for developers) and UI-based (for end users) ways to generate shareable links. Includes comprehensive test coverage with 61 new tests (30 for URL state manager logic, 31 for shareable links UI), bringing the total test count to 445 tests across 26 test files. Files Modified: src/urlStateManager.ts, src/urlStateManager.test.ts, src/shareableLinksUI.ts, src/shareableLinksUI.test.ts, src/main.ts, src/searchUI.ts, src/style.css
Feature/Change: Interactive Evolution Comparison Tool Description: Added a powerful comparison system that allows users to analyze and contrast different time periods or specific evolution entries side-by-side. The tool provides two comparison modes: Period Comparison (comparing date ranges like "Last 7 Days" vs "Previous 7 Days" or custom weekly periods) and Entry Comparison (comparing any two specific evolution days). The period comparison displays comprehensive metrics including evolution count, total tests, total files, average tests per entry, average files per entry, and velocity changes (percentage growth). Results are shown in beautiful side-by-side cards with a centered differences card showing deltas with color-coded positive (green), negative (red), and neutral indicators. The category distribution is visualized with horizontal bar charts showing how different feature types (UI/UX, Visualization, Testing, etc.) were distributed across each period. Entry comparison shows detailed information about each evolution including day, date, feature name, and description excerpt, with difference metrics for tests, files, description length, and category changes. The UI features responsive design, gradient backgrounds, smooth animations, and full dark/light theme support. The comparison tool helps identify development patterns, measure productivity trends, analyze feature complexity evolution, and understand how Chimera's growth velocity changes over time. This meta-analysis feature transforms raw evolution data into actionable insights about the project's development trajectory. Includes comprehensive test coverage with 50 new tests (22 for comparison engine logic, 28 for UI components), bringing the total test count to 384 tests across 24 test files. Files Modified: src/comparisonEngine.ts, src/comparisonEngine.test.ts, src/comparisonUI.ts, src/comparisonUI.test.ts, src/main.ts, src/style.css
Feature/Change: Interactive Feature Dependency Graph Description: Added an intelligent dependency analysis and visualization system that maps how Chimera's features build upon and relate to each other over time. The system automatically analyzes evolution history to detect three types of dependencies: "builds-on" (foundational dependencies), "enhances" (improvements to existing features), and "uses" (feature utilization). Features are categorized into 8 distinct types (Visualization, UI/UX, Search & Filter, Data & Export, Analytics, Gamification, AI & Intelligence, Core Features) based on semantic analysis of feature names and descriptions. The interactive circular graph uses SVG to display nodes representing each evolution day, colored by category, with curved arrows showing dependencies between features. Hovering over nodes reveals tooltips with feature details, while dependency lines highlight the relationships. The dashboard includes key statistics (total features, dependencies, average connections, and category count), a comprehensive legend explaining dependency types and showing category distribution, and an intelligent insights section that identifies the foundation features that other systems build upon. The visualization demonstrates how Chimera has evolved from simple timeline tracking into a sophisticated ecosystem where later features leverage earlier innovations. This meta-feature provides architectural visibility, showing not just what was built, but how the codebase grew organically with each feature building intelligently on previous work. Includes comprehensive test coverage with 50 new tests (23 for dependency detection logic, 27 for UI components), bringing the total test count to 334 tests across 22 test files. Files Modified: src/dependencyGraph.ts, src/dependencyGraph.test.ts, src/dependencyGraphUI.ts, src/dependencyGraphUI.test.ts, src/main.ts, src/style.css
Feature/Change: Interactive Code Metrics Tracker Description: Added a comprehensive code metrics tracking and visualization system that analyzes Chimera's technical growth over time. The system estimates and displays key codebase metrics including total files, test files, lines of code, test lines, average lines per file, test coverage percentage, and code-to-test ratio. Features beautiful metric cards showing current values with growth indicators (e.g., "+2 files", "+300 lines"), interactive SVG-based line charts visualizing trends for both lines of code and test coverage over the evolution timeline, and an intelligent insights engine that provides contextual feedback about code quality and testing strength. The charts use smooth gradients and animated dots with hover tooltips showing day-by-day details. Metrics are calculated using heuristic growth patterns based on evolution count, providing estimates of how the codebase has expanded. The insights engine categorizes testing strength (excellent/good/needs-improvement) and highlights positive trends like "Strong test-to-code ratio", "Codebase actively growing", and "Test coverage improving". The UI is fully responsive with dark/light theme support, gradient backgrounds, and smooth animations. This feature adds another dimension to understanding Chimera's evolution beyond just features, focusing on the technical health and growth of the codebase itself. Includes comprehensive test coverage with 46 new tests (22 for metrics logic, 24 for UI components), bringing the total test count to 284 tests. Files Modified: src/codeMetrics.ts, src/codeMetrics.test.ts, src/metricsUI.ts, src/metricsUI.test.ts, src/main.ts, src/style.css
Feature/Change: Achievement & Milestone System Description: Added a gamified achievement and milestone tracking system that celebrates Chimera's evolution journey. The system automatically detects and unlocks 12 distinct achievements across 4 categories (Evolution, Testing, Features, and Growth) based on historical data analysis. Achievements include milestones like "The Beginning" (first evolution), "Week Strong" (7 days), "Test Century" (100+ tests), "Search Pioneer" (search feature), "Visual Artist" (data visualization), "Theme Master" (theme system), "Data Liberator" (export feature), "Fortune Teller" (predictions), "Feature Rich" (5+ evolutions), "Perfect Ten" (10 days), "Test Fortress" (150+ tests), and "Test Colossus" (200+ tests). The UI features beautiful animated cards that distinguish between unlocked (colorful with details) and locked (grayed out with hints) achievements. A dedicated milestones section displays progress bars showing how close Chimera is to the next achievement in both evolution count and test count categories. The header shows total unlocked achievements and completion percentage with gradient badges. Each unlocked achievement displays its icon, name, description, category, and unlock date. This meta-feature adds an engaging, self-reflective dimension to Chimera, making its evolution history more interactive and celebratory. Includes comprehensive test coverage with 41 new tests (19 for achievement logic, 22 for UI components). Files Modified: src/achievementSystem.ts, src/achievementSystem.test.ts, src/achievementUI.ts, src/achievementUI.test.ts, src/main.ts, src/style.css
Feature/Change: Theme System with Dark/Light Mode Toggle Description: Added a comprehensive theme switching system that allows users to toggle between light and dark color schemes. The implementation uses CSS variables for seamless theme transitions and includes a beautiful floating toggle button in the top-right corner with smooth animations (sun icon for dark mode, moon icon for light mode). The theme system persists user preferences in localStorage and automatically applies them on page load. It also respects system preferences with an "auto" mode that detects the user's OS theme preference. The entire UI has been updated with proper CSS variables, ensuring all components (cards, timelines, graphs, predictions, export UI) adapt beautifully to both themes. The toggle button features a gradient background, hover effects with rotation, and is fully responsive on mobile devices. Error handling ensures graceful fallback in restricted environments like private browsing mode. This enhancement significantly improves user experience by allowing users to customize the interface to their preference and lighting conditions. Includes comprehensive test coverage with 24 new tests (16 for theme system logic, 8 for UI components). Files Modified: src/themeSystem.ts, src/themeSystem.test.ts, src/themeToggle.ts, src/themeToggle.test.ts, src/main.ts, src/style.css
Feature/Change: Data Export System Description: Added a comprehensive data export feature that allows users to download Chimera's evolution history in multiple formats (JSON, CSV, and Markdown). The export system includes a beautiful UI with format selection, metadata options, and real-time status feedback. Users can export machine-readable JSON for programmatic analysis, CSV for spreadsheet applications, or human-readable Markdown for documentation. The JSON export includes rich metadata (export date, total entries, date range), while all formats preserve the complete evolution history including dates, features, descriptions, and modified files. The feature includes elegant styling with gradient backgrounds, smooth animations, and responsive design that adapts to mobile devices. Success/error messages provide clear feedback, and the download triggers automatically in the browser. This addition transforms Chimera from a visualization-only tool into a full-featured data platform, enabling users to analyze evolution patterns in external tools, create reports, or archive project history. Includes comprehensive test coverage with 42 new tests (24 for export logic, 18 for UI components). Files Modified: src/exportData.ts, src/exportData.test.ts, src/exportUI.ts, src/exportUI.test.ts, src/main.ts, src/style.css
Feature/Change: AI Evolution Prediction Engine Description: Added an intelligent prediction system that analyzes Chimera's historical evolution patterns and forecasts future development directions. The engine uses sophisticated algorithms to categorize features (UI/UX, Data Visualization, Search & Filter, Testing, Performance, etc.) and combines frequency analysis with temporal trend weighting to generate probability scores for each category. The system provides confidence levels (High/Medium/Low), detailed reasoning for each prediction, predicts the next likely evolution date based on historical cadence, and analyzes overall project trends. The beautiful UI displays predictions as interactive cards with gradient probability bars, confidence badges, and hover effects. The prediction section includes metadata showing the overall trend analysis and next predicted evolution date. This meta-feature brings AI-to-AI self-awareness to Chimera, allowing it to reflect on its own growth patterns and anticipate future directions. Includes comprehensive test coverage with 29 new tests (15 for engine logic, 14 for UI components). Files Modified: src/predictionEngine.ts, src/predictionEngine.test.ts, src/predictionUI.ts, src/predictionUI.test.ts, src/main.ts, src/style.css
Feature/Change: Visual Impact Graph Description: Added an interactive SVG-based data visualization system that tracks Chimera's growth over time. The Visual Impact Graph displays cumulative metrics across all evolutions, including total tests added and files modified, plotted on a beautiful animated chart. The graph features hover tooltips showing day-by-day details, smooth gradient colors (purple for tests, blue for files), and fully responsive design. The feature includes a metrics dashboard showing Total Tests, Total Files, Average Tests per Feature, and Most Productive Day. This visualization transforms raw evolution data into meaningful visual insights, making it easy to see how Chimera has grown and accelerated over time. The implementation uses native SVG rendering with no external chart libraries, keeping the bundle lean while providing rich interactivity. Files Modified: src/impactData.ts, src/impactData.test.ts, src/impactGraph.ts, src/impactGraph.test.ts, src/impactGraphUI.ts, src/impactGraphUI.test.ts, src/main.ts, src/style.css
Feature/Change: Interactive Search and Filter System Description: Added a powerful search and filter interface to the evolution timeline. Users can now search across all evolution entries (feature names, descriptions, files, and dates) with real-time filtering. The system includes category-based filters (UI/UX, Features, Refactoring, Testing, Documentation, Build/Deploy) to help users explore Chimera's evolution history more effectively. The search UI features a clean design with a search input, category dropdown, and a results counter that updates dynamically. As Chimera grows, this feature will become increasingly valuable for navigating its evolution history. Includes comprehensive test coverage with 29 tests across search logic and UI components. Files Modified: src/search.ts, src/search.test.ts, src/searchUI.ts, src/searchUI.test.ts, src/main.ts, src/style.css
Feature/Change: Interactive Statistics Dashboard Description: Added a comprehensive statistics dashboard that analyzes and visualizes Chimera's evolution data. The dashboard displays key metrics including total evolutions, days active, average evolutions per day, and recent activity (last 7 days). It also features a beautiful feature categories breakdown with animated progress bars that categorize evolutions into UI/UX, Features, Testing, Documentation, Build/Deploy, and more. The cards have smooth hover animations and the entire dashboard is responsive with both light and dark mode support. This transforms raw changelog data into meaningful insights about Chimera's growth patterns. Files Modified: src/statistics.ts, src/statistics.test.ts, src/dashboard.ts, src/dashboard.test.ts, src/main.ts, src/style.css
Feature/Change: Evolution Timeline Tracker Description: Added an interactive visual timeline that displays Chimera's evolution history. The application now features a beautiful UI with Chimera branding, parses the README changelog, and displays it as an engaging timeline. Users can see all past evolutions at a glance with hover effects and clean styling. This transforms Chimera from a simple counter app into a self-documenting evolution showcase. Files Modified: src/main.ts, src/style.css, src/changelogParser.ts, src/changelogParser.test.ts, src/timeline.ts, src/timeline.test.ts, index.html, public/README.md
Feature/Change: Initial Setup Description: Created the base Chimera framework with Vite + TypeScript, GitHub Actions workflow for daily evolution, and this changelog system. Files Modified: All initial files
The journey begins...