Chessolve 6.0.0 — Changelog

🎨 Fully redesigned interface

• Rebuilt the entire extension interface from the ground up.
• Redesigned authentication, email verification, OTP, Home, Options, Profile, subscription, payment, transaction, and minimized views.
• Introduced a consistent panel shell and reusable UI components.
• Added smooth transitions between screens.
• Added animated bottom navigation and minimized-panel transitions.
• Added a universal drag rail and improved panel dragging.
• Improved both light and dark themes.
• Added responsive layouts for smaller screens and variable content.
• Added new extension and manifest icons.
• Removed obsolete logos and payment assets.
• Improved disabled, hover, loading, and selected states.
• Added reduced-motion support.

🏠 Home and analysis experience

• Rebuilt the Home screen and analysis setup.
• Improved quota, countdown, subscription, and usage displays.
• Added clearer best-move loading and status messages.
• Improved move display while the engine is loading.
• Added player-relative mate evaluations.
• Made quota progress deterministic and easier to understand.
• Removed obsolete Home error and analysis setup elements.
• Added a configurable “Start from move N” option.
• Unified the starting-move policy across score analysis and move reviews.
• Prevented analysis from starting before the configured move.
• Preserved the correct reviewed move when navigating through a game.

♟ Move review and classifications

• Added move classifications directly on the Chess.com and Lichess boards.
• Added Best, Excellent, Good, Great, Brilliant, Inaccuracy, Mistake, Miss, and Blunder assets.
• Added animated classification introductions.
• Added special glyph-only animations for Great and Brilliant moves.
• Matched Chess.com-style pill-to-icon transitions.
• Anchored classifications to the destination square.
• Added smooth downward fade-out animations.
• Improved post-game move review.
• Added support for reviewing selected moves while replaying a completed game.
• Fixed move classifications during live move-list replay.
• Rebuilt Chess.com positions from SAN history for reliable reviews.
• Prevented stale evaluations and classifications from appearing.
• Cleared reviews whenever the position or game generation becomes invalid.
• Hardened retry, takeback, reload, and history lifecycles.
• Added site rating to move-analysis requests.
• Removed redundant move-review labels from the best-move card.

🤖 Engine improvements

• Added support for selecting the Lc0 engine.
• Added entitlement-based engine availability.
• Sent the selected engine with analysis requests.
• Added isolated extension-side engine caching.
• Rejected malformed, contradictory, and stale cached engine results.
• Prevented outdated terminal engine responses from affecting the board.
• Preserved the displayed bot Elo when changing depth.
• Kept bot Elo visible when using Lc0.
• Cleared restricted engine access after authentication resets.

🌐 Chess.com reliability

• Added targeted mutation filtering to avoid unnecessary board processing.
• Cached move history for faster position updates.
• Invalidated cached history when moves change.
• Fixed post-game analysis recovery.
• Improved premove and opponent-reply handling.
• Prevented stale premove arrows.
• Added position epoch tracking and suggestion-state validation.
• Improved last-mover and turn detection.
• Removed duplicate stable-position processing.
• Simplified board update and best-move validation logic.

🟢 Lichess reliability

• Improved the Lichess adapter and bridge.
• Stabilized turn transitions and partial move-history updates.
• Fixed canvas alignment after board resizing.
• Prevented duplicate stylesheet injection.
• Added generation fencing for page reloads.
• Improved takeback and reset detection.
• Rejected stale reset baselines.
• Improved replay and move-review behavior.

👤 Authentication and profile

• Rebuilt email and OTP authentication screens.
• Added polished OTP auto-submit behavior.
• Restored authentication screen transitions and loading animation.
• Preserved settings throughout the authentication flow.
• Added timezone information to profile requests.
• Added centralized authenticated-session cleanup.
• Added a complete logout confirmation flow with loading feedback.
• Improved Profile subscription information and upgrade messaging.
• Added server-calculated best-move streak display.
• Improved profile avatar and light-theme contrast.

📊 Profile activity

• Added monthly activity statistics.
• Added request-change calculations.
• Added localized chart labels and tooltips.
• Added chart axes, guide lines, and detailed hover information.
• Improved tooltip positioning near chart edges.
• Added native horizontal overflow for larger charts.
• Limited activity data to the appropriate year.
• Fixed chart sizing, stacking, spacing, and clipping.
• Corrected monthly series generation so all months through the current month appear.

💳 Subscriptions and transactions

• Completely rebuilt the subscription and purchase experience.
• Added monthly and yearly billing options.
• Added a Best Value indicator for yearly plans.
• Added localized plan pricing.
• Added locale headers when retrieving available plans.
• Expanded and localized the subscription benefits.
• Improved the checkout summary and synchronization between selected plans.
• Added resilient multi-step purchase transitions.
• Preserved subscription form state and scrolling.
• Added pending-payment countdowns and loading skeletons.
• Improved paid-transaction action skeletons.
• Restored transaction screen scrolling.
• Added copy buttons for transaction fields.
• Added clipboard support and clearer transaction details.
• Improved transaction titles, layouts, and loading states.
• Removed obsolete payment-network information from payer amounts.

⚡️ Performance improvements

• Disabled content debugging in production builds.
• Filtered irrelevant Chess.com DOM mutations.
• Cached Chess.com move histories.
• Skipped duplicate stable-position updates.
• Made panel rendering idempotent.
• Batched cache persistence writes.
• Prevented duplicate Lichess stylesheet injection.
• Added development-only performance counters.
• Reduced unnecessary UI rerenders and board-analysis requests.

♿️ Accessibility and semantics

• Rebuilt the interface using more meaningful HTML structure.
• Improved form, button, navigation, section, and list semantics.
• Added accessible custom select controls.
• Improved keyboard and interaction behavior.
• Enhanced theme-toggle accessibility attributes.
• Improved screen-reader structure across authentication, Home, Options, Profile, subscriptions, and transactions.
• Removed the obsolete legacy template renderer.

🌍 Localization

• Updated English, Spanish, Brazilian Portuguese, and Russian translations.
• Added translations for the redesigned interface.
• Added localized subscription benefits, pricing, transaction states, analysis options, and status messages.
• Improved localized Profile chart formatting.

🧪 Quality and stability

• Added extensive tests for the redesigned views and shared components.
• Added semantic HTML and accessibility contracts.
• Added tests for authentication, OTP, logout, subscriptions, transactions, and UI transitions.
• Added tests for custom select controls and minimized mode.
• Added performance and caching tests.
• Added Chess.com mutation and premove tests.
• Added Lichess turn, replay, and bridge tests.
• Added engine-cache and analysis-start-policy coverage.
• Added comprehensive move-classification and review lifecycle coverage.
• Improved fixtures and eliminated unstable timer behavior.

🧹 Project cleanup

• Removed the legacy rendering system and obsolete styles.
• Removed unused documentation, screenshots, scripts, logos, and assets.
• Consolidated the new interface into reusable view components.
• Added technical design documents and implementation plans for the redesign.
• Updated the manifest and packaged resources.
• Bumped the extension version to 6.0.0.

Chessolve 6.0.0 is more than a "new version". It is a complete interface rebuild with better analysis controls, engine selection, on-board move classifications, improved post-game review, stronger Chess.com and Lichess reliability, faster performance, accessible markup, localized subscriptions, and substantially expanded test coverage.