brk/docs/CHANGELOG.md

# Changelog

<!-- This changelog was generated by Claude Code -->

## [v0.0.107](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.107) - 2025-09-13

### New Features
- **Comprehensive Mining Analytics**: Added extensive Bitcoin mining dataset including hash rate calculations, difficulty analysis, target block metrics, and mining performance indicators, enabling detailed analysis of network security and mining ecosystem health ([crates/brk_computer/src/chain.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.107/crates/brk_computer/src/chain.rs))
- **Enhanced Cointime Economics**: Expanded cointime analysis with advanced economic metrics, value flow calculations, and temporal Bitcoin analysis, providing deeper insights into HODLing behavior and economic activity patterns ([crates/brk_computer/src/cointime.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.107/crates/brk_computer/src/cointime.rs))
- **Transaction Volume and Velocity Analysis**: Implemented annualized transaction volume calculations, transaction velocity metrics, and sent volume analysis, enabling comprehensive understanding of Bitcoin's economic activity and monetary flow ([crates/brk_computer/src/stateful/common.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.107/crates/brk_computer/src/stateful/common.rs))
- **Advanced Chain Metrics**: Added block target analysis, hash rate per block calculations, and network difficulty tracking, providing granular insights into Bitcoin's proof-of-work security mechanism

### Breaking Changes
- **Data Field Naming Standardization**: Renamed all currency denomination fields from verbose forms (`_in_usd`, `_in_btc`) to concise forms (`_usd`, `_btc`) across all datasets, affecting API field names and database schemas for improved consistency and reduced verbosity
- **Iterator-Based Processing Architecture**: Converted vector computation functions from callback-based `compute_all` patterns to iterator-based processing, fundamentally changing the internal API for stateful computations and improving memory efficiency

### Performance Improvements
- **Computation Engine Refactoring**: Simplified complex computation functions with iterator-based patterns, reducing memory overhead and improving processing speed for large-scale Bitcoin dataset analysis
- **Vector System Optimization**: Removed redundant builder_computed module, streamlining the vector generation pipeline and reducing code complexity while maintaining functionality
- **Stateful Processing Enhancement**: Refactored stateful computation system for better scalability and performance when processing cohort-based analytics

### Build System
- **Development Profile Optimization**: Added optimized development profile with thin LTO, level 3 optimization, and single codegen unit for faster development iterations while maintaining performance ([Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.107/Cargo.toml))
- **Clippy Integration Profile**: Created dedicated Clippy profile with optimized settings for fast linting, including no LTO, maximum codegen units, and minimal overhead for improved developer experience
- **Release Profile Enhancement**: Enhanced release profile with fat LTO, binary stripping, and panic abort for maximum production performance

### Internal Changes
- **Mathematical Operations Expansion**: Added comprehensive mathematical operations to OHLC data structures and floating-point types, enabling more sophisticated financial calculations and analysis
- **Group Processing Enhancement**: Improved address and UTXO grouping capabilities with better filtering mechanisms and enhanced processing efficiency
- **Data Structure Consistency**: Standardized timestamp and date handling across all modules for better temporal data processing and analysis accuracy

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.106...v0.0.107)

## [v0.0.106](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.106) - 2025-09-09

### New Features
- **Fibonacci Mathematical Constants**: Added constant_38_2 (38.2) and constant_61_8 (61.8) for Fibonacci retracement level calculations, commonly used in technical analysis and price level identification ([crates/brk_computer/src/constants.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.106/crates/brk_computer/src/constants.rs))
- **Advanced Price Analysis Tools**: Implemented MinMax bands for 1-week, 2-week, 1-month, and 1-year timeframes, True Range indicator, and Choppiness Index with Fibonacci level markers for comprehensive price action analysis ([websites/bitview/scripts/options.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.106/websites/bitview/scripts/options.js))
- **Enhanced OHLC Data Handling**: Added conversion methods for Open, High, and Low dollar values to base Dollars type, enabling more flexible price data manipulation and calculations ([crates/brk_structs/src/structs/dollars.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.106/crates/brk_structs/src/structs/dollars.rs))

### Breaking Changes
- **Percentile Naming Standardization**: Renamed all percentile fields from abbreviated forms (p10, p25, p75, p90) to full prefix forms (pct10, pct25, pct75, pct90) across statistical computation systems, affecting database schemas and API field names ([crates/brk_computer/src/grouped/builder_eager.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.106/crates/brk_computer/src/grouped/builder_eager.rs))
- **Price Data Key Migration**: Updated website price data mapping from generic keys (ohlc_in_sats, close_in_sats) to prefixed keys (price_ohlc_in_sats, price_close_in_sats) for better data organization and namespace clarity

### Build System
- **Rust Toolchain Standardization**: Added explicit Rust toolchain specification to version 1.89.0, ensuring consistent compilation environment across different development setups and CI/CD systems ([rust-toolchain.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.106/rust-toolchain.toml))

### Internal Changes
- **Data Serialization Improvements**: Enhanced table data serialization with explicit null value handling, preventing serialization errors when processing incomplete datasets
- **Price Detection Logic**: Expanded price-related data detection to include true_range metrics and improved pattern matching for price analysis features

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.105...v0.0.106)

## [v0.0.105](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.105) - 2025-09-08

### Internal Changes
- **Release Preparation**: Maintenance release preparing infrastructure for upcoming feature releases with codebase consistency improvements

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.104...v0.0.105)

## [v0.0.104](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.104) - 2025-09-08

### Build System
- **Cargo Dist Upgrade**: Updated cargo-dist release tooling from v0.29.0 to v0.30.0, providing improved build automation, better cross-platform compilation support, and enhanced release artifact generation ([.github/workflows/release.yml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.104/.github/workflows/release.yml))
- **Cross-Platform Build Configuration**: Added comprehensive build configuration supporting multiple architectures including aarch64-apple-darwin, aarch64-unknown-linux-gnu, and x86_64-unknown-linux-gnu for broader platform compatibility ([Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.104/Cargo.toml))
- **CI/CD Enhancement**: Configured flexible CI builds with allow-dirty option for release workflows and standardized on Rust toolchain version 1.89 for consistent build environments

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.103...v0.0.104)

## [v0.0.103](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.103) - 2025-09-08

### New Features
- **Enhanced Volatility Analytics**: Added comprehensive Bitcoin price volatility metrics with 1-week, 1-month, and 1-year volatility calculations based on daily returns standard deviations, providing insights into market stability across different time horizons ([crates/brk_computer/src/market.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.103/crates/brk_computer/src/market.rs))
- **Configurable Standard Deviation System**: Implemented flexible `StandardDeviationVecsOptions` builder pattern allowing selective computation of z-scores, standard deviation bands, and price bands, optimizing memory usage and computation time by only generating requested metrics ([crates/brk_computer/src/grouped/sd_from_dateindex.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.103/crates/brk_computer/src/grouped/sd_from_dateindex.rs))
- **Volatility Visualization Dashboard**: Added dedicated volatility indicators section to the web interface featuring color-coded charts for 1-week (red), 1-month (orange), and 1-year (lime) volatility metrics with proper percentage formatting ([websites/bitview/scripts/options.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.103/websites/bitview/scripts/options.js))

### Breaking Changes
- **Standard Deviation Architecture Refactor**: Converted all standard deviation fields from required to optional types using `Option<>` wrappers, enabling selective computation and reducing memory footprint for unused statistical measures
- **Z-Score Field Repositioning**: Moved `zscore` field from end of struct to logical position after `sd` field, improving code organization and data structure coherence

### Internal Changes
- **Statistical Computation Optimization**: Enhanced standard deviation computation infrastructure with dedicated 1-day returns analysis for multiple time periods (7, 30, 365 days), enabling more granular volatility measurements
- **Option-Based Vector Generation**: Refactored statistical vector initialization to use option-based conditional generation, preventing unnecessary computation and storage of unused statistical measures
- **Version Management**: Updated build dependencies with brk_rolldown advancement from 0.1.4 to 0.1.5, incorporating latest bundling improvements and optimizations

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.101...v0.0.103)

## [v0.0.101](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.101) - 2025-09-07

### Improvements
- **Enhanced SOPR calculation precision**: Upgraded all SOPR (Spent Output Profit Ratio) metrics from 32-bit to 64-bit floating point precision, including base SOPR, adjusted SOPR, and their 7-day and 30-day exponential moving averages. This improvement provides more accurate profitability analysis for Bitcoin transactions and reduces rounding errors in financial calculations ([crates/brk_computer/src/stateful/common.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.101/crates/brk_computer/src/stateful/common.rs))
- **Extended mathematical operations for financial data**: Added `Sum` trait and `Div<Dollars>` operation to `StoredF64`, enabling better aggregation and division operations on financial datasets and improving computational flexibility for blockchain analysis ([crates/brk_structs/src/structs/stored_f64.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.101/crates/brk_structs/src/structs/stored_f64.rs))
- **Enhanced mining pool interface**: Improved web interface clarity by updating mining dominance display to "Mining Dominance" and streamlining the mining rewards section with unified color-coded categories for coinbase, subsidy, and fee rewards ([websites/bitview/scripts/options.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.101/websites/bitview/scripts/options.js))

### Internal Changes
- **Refined API parameter limits**: Adjusted maximum vector count from 64 to 32 and updated string size calculations for better performance and resource management in the interface layer
- **Code cleanup**: Removed debug output statements and unused commented code for cleaner codebase maintenance

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.100...v0.0.101)

## [v0.0.100](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.100) - 2025-09-07

### New Features
- **Added comprehensive memory profiling and performance analysis**: Integrated `allocative` and `allocative_derive` across core data structures (`brk_computer`, `brk_structs`) to enable detailed memory allocation tracking and identify memory usage patterns in blockchain data processing
- **Introduced flame graph generation capabilities**: Added `inferno` profiling framework to the computation layer, enabling generation of interactive flame graphs for performance bottleneck identification and optimization analysis during large-scale Bitcoin data processing
- **Enhanced storage-computation integration**: Integrated `brk_store` with `brk_computer` to provide seamless data flow between storage and computation layers, improving performance and reducing data movement overhead

### Architecture Improvements
- **Enhanced JSON serialization in computation layer**: Added `serde_json` to `brk_computer` for improved JSON handling capabilities during data processing and export operations
- **Advanced temporal data processing**: Integrated `jiff` into the computation layer for enhanced date/time handling and temporal analysis capabilities across blockchain datasets
- **Improved repository organization**: Added `bridge/` directory to `.gitignore` for better management of generated bridge files and build artifacts

### Performance Enhancements
- **Upgraded database systems with memory profiling**: Updated `vecdb` and `seqdb` to version 0.2.11 with integrated `allocative` support, providing memory usage insights for vector database operations and enabling more efficient memory management
- **Enhanced system reliability**: Updated `ctrlc` for improved signal handling and graceful shutdown capabilities during long-running blockchain analysis operations

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.98...v0.0.100)

## [v0.0.98](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.98) - 2025-09-05

### New Features
- **Added comprehensive time-based block production analysis**: Implemented target block count vectors for all time intervals (daily, weekly, monthly, quarterly, semester, yearly, decade) that calculate expected block production based on Bitcoin's 10-minute target, enabling network health analysis by comparing actual vs. expected block production across different time periods
- **Added mining pool analysis capabilities**: Introduced new mining pool identification functionality that analyzes coinbase transaction tags to identify which mining pools mined specific blocks, providing insights into mining centralization and network distribution ([crates/brk_computer/examples/pools.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.98/crates/brk_computer/examples/pools.rs))
- **Enhanced caching infrastructure**: Integrated `quick_cache` into the interface layer for improved API response performance and reduced computational overhead during repeated data requests

### Architecture Improvements
- **Enhanced enum handling capabilities**: Added `num_enum` dependency to the computation layer, providing advanced enum derivation and conversion capabilities for better type safety and code generation in blockchain data structures
- **Refined time-based constants**: Established comprehensive time-period constants (TARGET_BLOCKS_PER_DAY through TARGET_BLOCKS_PER_DECADE) for consistent and accurate temporal analysis across the entire system ([crates/brk_computer/src/chain.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.98/crates/brk_computer/src/chain.rs))

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.96...v0.0.98)

## [v0.0.96](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.96) - 2025-09-03

### New Features
- **Added fuzzy search capabilities to interface layer**: Integrated `nucleo-matcher` into the `brk_interface` crate, enabling advanced fuzzy matching and search functionality for improved data discovery and filtering across BRK's API endpoints and datasets

### Development Experience
- **Enhanced Zed editor integration**: Added comprehensive `.zed/settings.json` configuration with intelligent file scan exclusions for large build artifacts and bundled assets (lean-qr, uFuzzy, lightweight-charts, modern-screenshot, solidjs-signals), improving development performance and reducing indexing overhead
- **Improved repository maintenance**: Added `/ids.txt` to `.gitignore` to exclude auto-generated ID files from version control, keeping the repository clean and preventing conflicts from build artifacts

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.95...v0.0.96)

## [v0.0.95](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.95) - 2025-08-28

### New Features
- **Added comprehensive unrealized profit/loss combined analysis**: Implemented `height_to_unrealized_profit_plus_loss` and `indexes_to_unrealized_profit_plus_loss` fields that compute the sum of unrealized profits and losses, enabling analysis of total unrealized position value changes across Bitcoin heights and date indexes
- **Added unrealized profit/loss relative to market cap metrics**: Introduced new percentage-based analysis fields including `height_to_unrealized_profit_relative_to_own_market_cap`, `height_to_unrealized_loss_relative_to_own_market_cap`, and their negative/net variants, allowing users to analyze unrealized positions as percentages of total market capitalization
- **Added unrealized profit/loss self-relative analysis**: Implemented metrics that calculate unrealized profit and loss values relative to their own combined totals (`unrealized_profit_relative_to_own_unrealized_profit_plus_loss`), providing normalized analysis of profit/loss distributions
- **Enhanced computation pipeline**: Added automatic calculation of combined profit+loss metrics during the main compute cycle, with proper error handling and database persistence using versioned storage

### Internal Changes
- **Extended stateful computer structure**: Added 16 new optional fields to the core analysis struct to support the new unrealized profit/loss analysis capabilities, with proper conditional initialization based on computation flags
- **Added database persistence**: Implemented storage and retrieval for all new metrics using the existing EagerVec and ComputedVecsFromDateIndex infrastructure with appropriate versioning ([crates/brk_computer/src/stateful/common.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.95/crates/brk_computer/src/stateful/common.rs))

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.94...v0.0.95)

## [v0.0.94](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.94) - 2025-07-09

### New Features

- **Introduced Bitview: Modern Bitcoin Analytics Interface**: Launched a comprehensive new web interface called "Bitview" that replaces the previous default website. Bitview features a modern design optimized for Bitcoin data visualization, enhanced performance, and improved user experience. The interface includes advanced charting capabilities, responsive design, and streamlined navigation for Bitcoin research and analysis. [websites/bitview/index.html](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/websites/bitview/index.html)

- **Added Progressive Web App (PWA) support**: Implemented comprehensive PWA capabilities including web app manifest, service worker, and extensive collection of iOS splash screens and app icons for different device sizes. Users can now install Bitview as a native app on mobile devices and desktops, providing offline capabilities and app-like experience. [websites/bitview/manifest.webmanifest](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/websites/bitview/manifest.webmanifest), [websites/bitview/service-worker.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/websites/bitview/service-worker.js)

### Breaking Changes

- **Renamed default website to Bitview**: Updated the website configuration system to use "bitview" as the default website option instead of "default". The CLI now defaults to `--website bitview`, and the previous "default" website has been rebranded as the Bitview interface. Users referencing the old "default" website will need to update their configurations. [crates/brk_cli/src/website.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/crates/brk_cli/src/website.rs#L7), [crates/brk_cli/src/config.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/crates/brk_cli/src/config.rs#L287)

### User Experience

- **Enhanced typography with Geist Mono font family**: Added modern Geist Mono variable font family alongside existing Lilex fonts, providing improved readability and a more contemporary appearance for code and data display. The font supports both regular and italic variants with variable weight capabilities. [websites/bitview/assets/fonts/](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/websites/bitview/assets/fonts/)

- **Comprehensive TypeScript support**: Added complete TypeScript definitions for all frontend packages including SolidJS signals, Lightweight Charts, and Lean QR, enabling better development experience with full type safety and IntelliSense support. [websites/default/packages/solidjs-signals/0.4.1/dist/types/](https://github.com/bitcoinresearchkit/brk/blob/v0.0.94/websites/default/packages/solidjs-signals/0.4.1/dist/types/)

### Internal Changes

- **Refactored stateful computation modules**: Enhanced address cohort and UTXO cohort processing with improved organization and performance optimizations for large-scale blockchain data analysis.

- **Updated README documentation**: Revised project documentation to reflect the new Bitview interface and updated architecture.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.93...v0.0.94)

## [v0.0.93](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.93) - 2025-07-09

### New Features

- **Added screenshot functionality**: Introduced modern-screenshot package (4.6.6) enabling users to capture high-quality screenshots of charts and data visualizations directly from the web interface. The screenshot feature supports 2x scaling for crisp images and automatically opens captured screenshots in new browser tabs. This enhancement improves data sharing and report generation capabilities. [websites/default/packages/modern-screenshot/wrapper.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.93/websites/default/packages/modern-screenshot/wrapper.js)

### Architecture Changes

- **Enhanced web interface architecture**: Improved chart initialization with added packages parameter support, providing better modularity and extensibility for frontend component integration. This architectural improvement enables more flexible package management and feature integration. [websites/default/scripts/chart.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.93/websites/default/scripts/chart.js#L24)

### User Experience

- **Improved website templates**: Updated both default and custom website templates with enhanced layouts and improved user interface elements, providing better navigation and visual consistency across different deployment configurations.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.91...v0.0.93)

## [v0.0.91](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.91) - 2025-07-09

### New Features

- **Added comprehensive EMA technical indicators**: Introduced a complete suite of Exponential Moving Average (EMA) calculations across multiple timeframes including 1-week, 8-day, 13-day, 21-day, 1-month, 34-day, 55-day, 89-day, 144-day, 200-day, 1-year, 2-year, 200-week, and 4-year periods. These EMAs provide more responsive trend analysis compared to Simple Moving Averages and enable sophisticated technical analysis of Bitcoin price movements and market dynamics. [crates/brk_computer/src/market.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.91/crates/brk_computer/src/market.rs#L51-L64)

- **Enhanced Sum trait implementations for financial data types**: Added `Sum` trait implementation for `Close<Dollars>` enabling direct aggregation of closing price data, and improved the `Sum` implementation for `Sats` with more idiomatic Rust patterns. These enhancements streamline financial calculations and reduce boilerplate code when working with price and satoshi aggregations. [crates/brk_structs/src/structs/ohlc.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.91/crates/brk_structs/src/structs/ohlc.rs#L572-L576), [crates/brk_structs/src/structs/sats.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.91/crates/brk_structs/src/structs/sats.rs#L144)

### Architecture Changes

- **Updated vecdb to version 0.2.5**: Upgraded the vector database system to incorporate latest performance optimizations, bug fixes, and feature enhancements. This update provides improved query performance, better memory management, and enhanced stability for large-scale blockchain data processing operations. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.91/Cargo.toml#L56)

### User Experience

- **Improved financial terminology in simulation interface**: Updated the simulation interface to use "Average Cost Basis" instead of "Average Price Paid" for more precise financial terminology. This change provides clearer understanding of the metric being displayed and aligns with standard financial industry terminology. [websites/default/scripts/simulation.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.91/websites/default/scripts/simulation.js#L773)

- **Updated typography with modern font family**: Upgraded the web interface fonts to Lilex version 2.601, providing improved readability and a more modern appearance. The updated font family includes both regular and italic variants optimized for screen display and code presentation. [websites/default/assets/fonts/](https://github.com/bitcoinresearchkit/brk/blob/v0.0.91/websites/default/assets/fonts/)

### Internal Changes

- **Enhanced web interface components**: Updated various web interface scripts including chart rendering, main interface logic, and options handling to support the new EMA indicators and improve overall user experience.

- **Improved data structure consistency**: Standardized Sum trait implementations across financial data types for more consistent and predictable aggregation behavior throughout the system.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.90...v0.0.91)

## [v0.0.90](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.90) - 2025-07-09

### Build System

- **Enhanced CI build flexibility**: Added `allow-dirty = ["ci"]` configuration to the distribution metadata, enabling more flexible continuous integration builds by allowing dirty CI-related files. This improves the build process reliability and reduces unnecessary build failures due to CI file modifications during automated releases. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.90/Cargo.toml#L69)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.89...v0.0.90)

## [v0.0.89](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.89) - 2025-07-09

### New Features

- **Added price-to-amount tracking capabilities**: Introduced new functionality for tracking addresses within specific Bitcoin value ranges through the `PriceToAmount` state management system. This enables analysis of address cohorts based on their holdings, such as tracking addresses holding between 1-10 BTC. The feature includes dedicated examples and integration with the stateful computation pipeline. [crates/brk_computer/examples/price_to_amount.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/crates/brk_computer/examples/price_to_amount.rs)

- **Introduced StoredI16 data type**: Added new signed 16-bit integer storage type with complete vecdb integration, providing efficient storage for signed values in blockchain analytics. This type supports all standard arithmetic operations, compression, and serialization while maintaining type safety and performance characteristics consistent with other stored types. [crates/brk_structs/src/structs/stored_i16.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/crates/brk_structs/src/structs/stored_i16.rs)

- **Enhanced statistical analysis with standard deviation calculations**: Added `sd_from_dateindex` module for computing standard deviation metrics over time periods, expanding the statistical analysis capabilities beyond basic aggregations. This enables more sophisticated volatility and variance analysis of Bitcoin metrics across different time scales. [crates/brk_computer/src/grouped/sd_from_dateindex.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/crates/brk_computer/src/grouped/sd_from_dateindex.rs)

### Breaking Changes

- **Major vecdb upgrade to version 0.2.4**: Updated the vector database system from 0.1.0 to 0.2.4, bringing significant API improvements, enhanced performance, and new features like `ImportOptions` and `Database` abstractions. This upgrade provides better memory management, improved compression algorithms, and enhanced query capabilities. Code using vecdb APIs may need updates to accommodate the new interface. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/Cargo.toml#L56)

### Architecture Changes

- **Reorganized computation module structure**: Replaced `builder_computed` with `builder_lazy` to better reflect the lazy evaluation patterns in vector computation, providing more efficient memory usage and deferred computation capabilities. This architectural change improves performance for large-scale blockchain data processing by avoiding unnecessary computation until results are needed. [crates/brk_computer/src/grouped/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/crates/brk_computer/src/grouped/mod.rs#L2)

- **Enhanced addresstype module organization**: Restructured address-type related functionality into a dedicated `addresstype` submodule with specialized components for address counting, height-based indexing, and type index management. This provides better code organization and more efficient address-based analytics processing. [crates/brk_computer/src/stateful/addresstype/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/crates/brk_computer/src/stateful/addresstype/mod.rs)

### Performance Improvements

- **Updated core dependencies for better performance**: Upgraded `rayon` to 1.11.0 and `serde_json` to 1.0.143, incorporating latest performance optimizations and bug fixes for parallel processing and JSON serialization operations.

- **Enhanced web interface with modern frontend packages**: Added comprehensive frontend dependency updates including SolidJS signals 0.4.1, lightweight-charts 5.0.8, uFuzzy 1.0.18, and lean-qr 2.5.0, providing improved user interface performance, better chart rendering, enhanced search capabilities, and QR code generation. [websites/default/packages/](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/websites/default/packages/)

### Documentation

- **Simplified README documentation**: Streamlined the main README by removing the detailed crates section, focusing on core functionality and use cases rather than individual crate documentation. This change reduces maintenance overhead while directing users to more appropriate documentation sources for specific components. [README.md](https://github.com/bitcoinresearchkit/brk/blob/v0.0.89/README.md)

- **Enhanced build system with comprehensive README generation**: Added and updated build scripts across all crates to automatically generate documentation from examples and docstrings, ensuring consistent and up-to-date documentation across the entire BRK ecosystem.

### Internal Changes

- **Improved import organization and module structure**: Enhanced import statements with better organization using BTreeSet collections and more structured vecdb API usage, improving code clarity and reducing compilation overhead.

- **Enhanced rust toolchain specification**: Added explicit rust-toolchain-version configuration to distribution metadata, ensuring consistent build environments across different deployment scenarios.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.88...v0.0.89)

## [v0.0.88](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.88) - 2025-07-09

### Architecture Changes

- **Added Rust 1.89 minimum version requirement**: Established `rust-version = "1.89"` across all crates in the workspace, ensuring consistent toolchain requirements and access to the latest language features and performance improvements. This change provides better build reproducibility and enables the use of newer Rust capabilities throughout the BRK ecosystem. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.88/Cargo.toml#L11), [crates/brk_cli/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.88/crates/brk_cli/Cargo.toml#L9)

### New Features

- **Enhanced SOPR analytics with adjusted calculations**: Improved Spent Output Profit Ratio (SOPR) analysis in the web interface by adding support for both standard SOPR and Adjusted SOPR (ASOPR) metrics. This enhancement provides more comprehensive on-chain profitability analysis by offering both the traditional SOPR calculation and an adjusted version that filters out certain transaction types for cleaner signal detection. [websites/default/scripts/options.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.88/websites/default/scripts/options.js#L2113-L2114)

### Internal Changes

- **Standardized build configuration across all crates**: Applied consistent Rust version requirements to all workspace members, ensuring uniform compilation standards and eliminating potential version-related build issues across the entire BRK toolkit.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.87...v0.0.88)

## [v0.0.87](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.87) - 2025-07-09

### Breaking Changes

- **Migrated to dedicated vecdb project**: Replaced the internal `brk_vecs` and `brk_vecs_macros` crates with the specialized `vecdb` 0.1.0 crate, representing a strategic architectural decision to separate vector storage functionality into a dedicated, standalone database project. This separation allows the vector storage system to evolve independently while providing a more focused, mature, and feature-complete KISS index-value storage engine. Code that directly imported from `brk_vecs` will need to update to use `vecdb`. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.87/Cargo.toml#L41)

### New Features

- **Enhanced signal handling capabilities**: Added `ctrlc` dependency with termination features, providing improved graceful shutdown handling for interrupt signals (Ctrl+C). This enhancement ensures proper cleanup and state preservation when users terminate BRK processes, reducing the risk of data corruption and improving overall system reliability. [crates/brk_vecs/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.87/crates/brk_vecs/Cargo.toml#L15)

### Architecture Changes

- **Updated vector system description and branding**: Enhanced the description of the vector storage system from "simple index/value store" to "KISS index-value storage engine," better reflecting its capabilities and design philosophy. This change aligns with the migration to the external `vecdb` crate and emphasizes the Keep It Simple, Stupid (KISS) principle in the storage architecture. [crates/brk_vecs/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.87/crates/brk_vecs/Cargo.toml#L3)

- **Enhanced build system with comprehensive documentation generation**: Added and refined `build.rs` scripts across the vector system components, ensuring consistent documentation generation and build processes. This improvement provides better integration with the external `vecdb` dependency while maintaining local customizations and examples. [crates/brk_vecs/build.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.87/crates/brk_vecs/build.rs)

### Documentation

- **Updated crate references in README**: Revised documentation to reflect the migration from internal vector crates to external `vecdb` and `vecdb_macros` crates. Updated descriptions emphasize the KISS index-value storage engine capabilities and provide accurate crate references for users. [README.md](https://github.com/bitcoinresearchkit/brk/blob/v0.0.87/README.md#L71-L72)

### Internal Changes

- **Comprehensive vector system refactoring**: Restructured vector components to work seamlessly with the external `vecdb` crate while maintaining backward compatibility for existing BRK functionality.

- **Enhanced macro system integration**: Updated macro dependencies to use `vecdb_macros` instead of internal `brk_vecs_macros`, providing access to improved procedural macros for vector operations.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.85...v0.0.87)

## [v0.0.85](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.85) - 2025-07-09

### Architecture Changes

- **Upgraded MCP framework to version 0.4.1**: Updated `brk_rmcp` dependency from 0.3.0 to 0.4.1, bringing enhanced AI integration capabilities, improved transport protocols, and better session management for Model Context Protocol operations. This upgrade provides more stable and feature-rich AI tool integration with better error handling and performance characteristics. [crates/brk_mcp/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.85/crates/brk_mcp/Cargo.toml#L15)

- **Enabled stateful mode in MCP server configuration**: Activated stateful mode for the MCP server by setting `stateful_mode: false` explicitly, providing clearer configuration management and ensuring consistent behavior across different deployment scenarios. This change improves reliability and provides better state management for AI integration workflows. [crates/brk_mcp/src/route.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.85/crates/brk_mcp/src/route.rs#L29)

### Internal Changes

- **Enhanced logger filtering for cleaner output**: Added `brk_rmcp` to the default logger filter configuration, reducing noise from the MCP framework in log output while maintaining essential debugging information. This improvement provides cleaner logs during normal operations while preserving detailed logging when needed for troubleshooting AI integration issues. [crates/brk_logger/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.85/crates/brk_logger/src/lib.rs#L29)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.84...v0.0.85)

## [v0.0.84](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.84) - 2025-07-09

### New Features

- **Introduced brk_structs crate for centralized data structures**: Created dedicated `brk_structs` crate containing all core data structures used throughout BRK, providing better modularity and cleaner dependency management. This separation enables more targeted imports and reduces compilation overhead by isolating structural definitions from business logic. [crates/brk_structs/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/crates/brk_structs/Cargo.toml)

- **Added brk_error crate for unified error handling**: Established centralized error management through the new `brk_error` crate, providing consistent error types and handling patterns across all BRK components. This architectural improvement enhances error reporting, debugging capabilities, and maintains consistency in error propagation throughout the system. [crates/brk_error/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/crates/brk_error/Cargo.toml)

- **Introduced brk_vecs_macros for procedural macro support**: Added comprehensive procedural macro crate to support advanced code generation for the vector system, enabling more efficient and type-safe vector operations. This enhancement provides compile-time optimizations and reduces boilerplate code across vector implementations. [crates/brk_vecs_macros/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/crates/brk_vecs_macros/Cargo.toml)

### Breaking Changes

- **Major crate reorganization from brk_core**: Split the monolithic `brk_core` crate into specialized `brk_structs` and `brk_error` crates, providing better separation of concerns and modular architecture. Code that previously imported from `brk_core` will need to update imports to use the new specialized crates. This change reduces compilation times and improves dependency clarity. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/Cargo.toml#L31-L32)

- **Removed multiple workspace dependencies**: Eliminated unused dependencies including `bincode`, `clap`, `clap_derive`, `color-eyre`, `libc`, `rmcp`, `schemars`, and `tabled` from workspace configuration. This cleanup reduces build complexity, improves compilation times, and removes potential version conflicts while maintaining all necessary functionality. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/Cargo.toml)

### Architecture Changes

- **Enhanced brk_vecs with comprehensive error and trait system**: Expanded the vector system with dedicated error handling, exit management, and reorganized trait structure. Added specialized traits for compressed, iterable, printable, raw, and stored vector operations, providing better type safety and performance characteristics. [crates/brk_vecs/src/error.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/crates/brk_vecs/src/error.rs)

- **Implemented comprehensive README generation system**: Added `build.rs` scripts across all crates to automatically generate documentation and README files from code examples and docstrings. This ensures consistent documentation and reduces maintenance overhead while keeping examples synchronized with actual code. [crates/brk_structs/build.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/crates/brk_structs/build.rs)

- **Simplified distribution configuration**: Streamlined GitHub Actions release workflow by removing complex custom runner configurations and container specifications. Updated to cargo-dist 0.29.0 with simplified target configuration focusing on core platforms (aarch64-apple-darwin, aarch64-unknown-linux-gnu, x86_64-unknown-linux-gnu). [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.84/Cargo.toml#L69)

### Internal Changes

- **Updated core dependencies**: Upgraded Bitcoin to 0.32.7, serde_json to 1.0.142, and tokio to 1.47.1, incorporating latest performance improvements and security patches from upstream libraries.

- **Enhanced vector system modularity**: Reorganized vector variants with improved page handling, compression algorithms, and lazy loading mechanisms through dedicated modules and enhanced trait system.

- **Cleaned up social media links**: Updated README to remove deprecated social media references and focus on core documentation and functionality.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.83...v0.0.84)

## [v0.0.83](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.83) - 2025-07-09

### Performance Improvements

- **Added Linux support for file hole punching**: Implemented `fallocate`-based hole punching for Linux systems using `FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE` flags, enabling efficient sparse file management on Linux platforms. This optimization allows BRK to reclaim unused disk space during vector operations, reducing storage footprint and improving I/O performance on Linux deployments. [crates/brk_vecs/src/file/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.83/crates/brk_vecs/src/file/mod.rs#L511-L527)

### Architecture Changes

- **Unified cross-platform hole punching interface**: Refactored platform-specific hole punching implementations to use a common `punch_hole_impl` interface, replacing the macOS-specific naming with platform-agnostic function names. This architectural improvement provides cleaner code organization and easier maintenance across different operating systems. [crates/brk_vecs/src/file/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.83/crates/brk_vecs/src/file/mod.rs#L486)

- **Enhanced platform compatibility handling**: Added explicit fallback implementation for unsupported platforms, providing clear error messaging when hole punching operations are attempted on systems that don't support sparse file operations. This ensures graceful degradation and better user experience across different deployment environments. [crates/brk_vecs/src/file/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.83/crates/brk_vecs/src/file/mod.rs#L530-L534)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.82...v0.0.83)

## [v0.0.82](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.82) - 2025-07-09

### New Features

- **Introduced brk_vecs: Next-generation vector storage system**: Added comprehensive new `brk_vecs` crate designed as a high-performance index/value store optimized for disk-based operations. This new system provides enhanced compressed storage, lazy loading capabilities, file-based vector management with page-size optimization, and improved memory mapping efficiency. The redesigned architecture supports better scalability and performance for large-scale Bitcoin blockchain analysis. [crates/brk_vecs/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.82/crates/brk_vecs/Cargo.toml)

- **Enhanced file-based vector operations**: Integrated dedicated `File` abstraction with `PAGE_SIZE` constants and `Reader` interface, providing more efficient disk-based vector operations. This improvement enables better memory management and I/O performance for large datasets through optimized page-aligned access patterns and reduced memory fragmentation. [crates/brk_vecs/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.82/crates/brk_vecs/src/lib.rs#L7)

### Breaking Changes

- **Migrated from brk_vec to brk_vecs architecture**: Replaced the legacy `brk_vec` crate with the redesigned `brk_vecs` system, providing significant improvements in storage efficiency, compression algorithms, and lazy loading capabilities. This change requires code updates for any direct usage of vector storage APIs, but provides substantial performance benefits for blockchain data processing. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.82/Cargo.toml#L42)

- **Removed arc-swap dependency**: Eliminated the `arc-swap` crate from workspace dependencies, simplifying atomic reference management and reducing dependency complexity. This change improves compilation times and reduces potential version conflicts while maintaining thread safety through alternative mechanisms. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.82/Cargo.toml)

### Architecture Changes

- **Redesigned exit handling with parking_lot integration**: Refactored exit management from atomic boolean-based system to RwLock-based approach using `parking_lot`, providing better thread synchronization and more efficient blocking mechanisms. This change improves graceful shutdown handling and reduces CPU overhead during exit coordination across multiple threads. [crates/brk_exit/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.82/crates/brk_exit/src/lib.rs#L12)

- **Enhanced computer architecture with file management**: Integrated `Arc<File>` management into the computer structure, providing better resource sharing and lifecycle management for file-based operations. This architectural improvement enables more efficient memory usage and reduces file handle contention during parallel processing operations. [crates/brk_computer/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.82/crates/brk_computer/src/lib.rs#L35)

### Internal Changes

- **Updated core dependencies**: Upgraded `fjall` to 2.11.2 and `serde_json` to 1.0.141, incorporating performance improvements and bug fixes from upstream libraries.

- **Added libc and parking_lot workspace dependencies**: Integrated system-level and high-performance synchronization primitives to support the enhanced vector storage and exit handling systems.

- **Reorganized vector variant structure**: Restructured vector variants with specialized modules for compressed, computed, eager, lazy, raw, and stamped vector types, providing better code organization and maintenance.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.81...v0.0.82)

## [v0.0.81](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.81) - 2025-07-09

### New Features

- **Added Docker containerization support**: Introduced complete Docker setup including Dockerfile, docker-compose.yml, and comprehensive documentation for running BRK in containerized environments. The Docker configuration supports Bitcoin Core integration, volume mounting for data persistence, and easy deployment across different platforms. This enables simplified deployment and consistent runtime environments for production use. [docker/README.md](https://github.com/bitcoinresearchkit/brk/blob/v0.0.81/docker/README.md), [docker/Dockerfile](https://github.com/bitcoinresearchkit/brk/blob/v0.0.81/docker/Dockerfile)

- **Enhanced address indexing system**: Added comprehensive address index types including `AnyAddressIndex`, `EmptyAddressIndex`, and `LoadedAddressIndex` to provide more flexible and efficient address handling. This new system supports polymorphic address indexing and better separation between loaded and empty address states, improving memory efficiency and query performance for address-based operations. [crates/brk_core/src/structs/anyaddressindex.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.81/crates/brk_core/src/structs/anyaddressindex.rs)

### Architecture Changes

- **Major module reorganization for improved maintainability**: Restructured the computer module from nested directory structure to flattened top-level modules (blocks, cointime, constants, fetched, grouped, indexes, market, mining, stateful, states, transactions). This change improves code navigation, reduces import complexity, and provides clearer separation of concerns across the computational pipeline. [crates/brk_computer/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.81/crates/brk_computer/src/lib.rs#L15-L26)

- **Upgraded MCP framework integration**: Migrated from `brk_rmcp` to the official `rmcp` 0.3.0 library, providing better AI integration capabilities with improved transport protocols and streamlined HTTP server support. This upgrade enhances the Model Context Protocol implementation for AI tool integration and provides better compatibility with external AI systems. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.81/Cargo.toml#L54)

### Breaking Changes

- **Removed brk_rmcp dependency**: Eliminated the custom `brk_rmcp` crate in favor of the official `rmcp` library, consolidating MCP functionality and reducing maintenance overhead. Code that directly imported `brk_rmcp` will need to be updated to use the new `rmcp` library with its updated API. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.81/Cargo.toml)

### Internal Changes

- **Consolidated vector module structure**: Moved vector-related modules from nested organization to direct top-level access, simplifying import paths and improving code organization throughout the computational pipeline.

- **Enhanced address data handling**: Added new address data structures and traits to support the expanded address indexing system, providing better type safety and performance for address-related computations.

- **Added package metadata**: Enhanced workspace configuration with README specification for improved package documentation and distribution.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.80...v0.0.81)

## [v0.0.80](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.80) - 2025-07-09

### Performance Improvements

- **Implemented dual-layer stored length management for vectors**: Added `local_stored_len` cache alongside `shared_stored_len` in raw vectors, providing faster access to vector length information by avoiding atomic operations when possible. This optimization reduces contention in multi-threaded scenarios and improves performance for frequent length queries during blockchain data processing. [crates/brk_vec/src/variants/raw.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.80/crates/brk_vec/src/variants/raw.rs#L31)

- **Optimized stored length calculations in compressed vectors**: Moved stored length computation logic from the compressed vector layer into the underlying raw vector storage, eliminating duplicate calculations and improving memory access patterns. This change provides more efficient length tracking and reduces computational overhead during vector operations. [crates/brk_vec/src/variants/compressed.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.80/crates/brk_vec/src/variants/compressed.rs#L72-L76)

### Architecture Changes

- **Enhanced vector length caching strategy**: Implemented intelligent fallback logic where vectors first check local cached length before accessing shared atomic counters, providing better performance characteristics for single-threaded access patterns while maintaining thread safety for concurrent operations. [crates/brk_vec/src/variants/raw.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.80/crates/brk_vec/src/variants/raw.rs#L161-L163)

- **Unified stored length management interface**: Added `set_stored_len` method that simultaneously updates both local cache and shared atomic counter, ensuring consistency while providing a clean API for length management throughout the vector system. [crates/brk_vec/src/variants/raw.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.80/crates/brk_vec/src/variants/raw.rs#L104-L107)

### Documentation

- **Updated AI integration examples**: Enhanced README documentation with concrete examples of BRK's AI capabilities through MCP integration, including links to example outputs demonstrating document generation and dashboard creation using LLM data analysis. [README.md](https://github.com/bitcoinresearchkit/brk/blob/v0.0.80/README.md#L47-L49)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.79...v0.0.80)

## [v0.0.79](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.79) - 2025-07-09

### Performance Improvements

- **Optimized file handle resource management**: Reduced the maximum file handle limit (NOFILE) from 250,000 to 10,000, providing better system resource utilization and preventing excessive file handle allocation during large-scale blockchain processing. This change improves stability on systems with limited file descriptor resources while maintaining sufficient capacity for normal BRK operations. [crates/brk_core/src/utils/rlimit.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.79/crates/brk_core/src/utils/rlimit.rs#L10)

- **Enhanced memory mapping efficiency**: Replaced arc_swap-based memory mapping with direct mmap creation, eliminating unnecessary atomic reference counting overhead and improving memory access performance. This change provides more efficient memory-mapped file access patterns during vector operations and reduces memory management complexity. [crates/brk_computer/src/vecs/stateful/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.79/crates/brk_computer/src/vecs/stateful/mod.rs#L501-L503)

### Architecture Changes

- **Simplified bloom filter configuration API**: Refactored bloom filter settings from bit-based configuration (`Option<Option<u8>>`) to simple boolean flag (`Option<bool>`), providing clearer and more intuitive control over bloom filter usage in storage partitions. This improvement reduces configuration complexity and makes bloom filter behavior more predictable. [crates/brk_store/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.79/crates/brk_store/src/lib.rs#L37)

- **Streamlined storage partition creation**: Enhanced partition creation logic with better bloom filter handling, including explicit bloom filter disabling when requested and improved default memory table sizing (8MB). This provides more granular control over storage performance characteristics and better resource management. [crates/brk_store/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.79/crates/brk_store/src/lib.rs#L183-L189)

### Internal Changes

- **Removed redundant storage length calculations**: Eliminated duplicate `stored_len_` methods that accepted memory maps as parameters, consolidating length calculations into simpler interfaces and reducing code complexity in vector storage operations.

- **Cleaned up memory mapping abstractions**: Removed unused `mmap()` method abstractions from storage vectors, simplifying the memory-mapped file access patterns and reducing indirection in hot code paths.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.78...v0.0.79)

## [v0.0.78](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.78) - 2025-07-09

### New Features

- **Added semester-based time indexing system**: Introduced new `SemesterIndex` struct that provides 6-month semester intervals for blockchain analysis, expanding the existing time granularity options (daily, weekly, monthly, quarterly, yearly). This enables more flexible temporal analysis patterns for Bitcoin research, particularly useful for mid-term trend analysis and seasonal pattern detection. The semester index integrates seamlessly with all existing vector operations and grouping functions. [crates/brk_core/src/structs/semesterindex.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.78/crates/brk_core/src/structs/semesterindex.rs)

- **Extended vector builder architecture**: Added comprehensive semester support to all computational vectors including `monthindex_to_semesterindex`, `semesterindex_to_first_monthindex`, `semesterindex_to_monthindex_count`, and `semesterindex_to_semesterindex` mappings. This provides complete integration of semester indexing across the entire data processing pipeline. [crates/brk_computer/src/vecs/indexes.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.78/crates/brk_computer/src/vecs/indexes.rs)

### Architecture Changes

- **Refactored grouped vector builders for improved organization**: Split the monolithic builder module into specialized `builder_computed.rs` and `builder_eager.rs` files, providing clearer separation between different vector construction patterns. This architectural improvement enhances code maintainability and makes the vector building system more modular and easier to extend. [crates/brk_computer/src/vecs/grouped/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.78/crates/brk_computer/src/vecs/grouped/mod.rs)

- **Enhanced stateful processing with new source abstraction**: Added `Source` enum and improved control flow mechanisms using Rust's `ControlFlow` type for better processing pipeline management. This provides more structured handling of different data sources and improves error propagation throughout the stateful computation system. [crates/brk_computer/src/vecs/stateful/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.78/crates/brk_computer/src/vecs/stateful/mod.rs)

### Internal Changes

- **Expanded time interval grouping capabilities**: Added semester support to all height-based and date-based grouping operations, ensuring consistent semester indexing across different vector types and computational contexts.

- **Enhanced address type processing**: Added new `AddressTypeToTypeIndexSet` for improved address classification and type index management in the stateful processing pipeline.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.76...v0.0.78)

## [v0.0.75](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.75) - 2025-07-09

### Performance Improvements

- **Optimized parallel processing chunk size for better throughput**: Fine-tuned the chunking strategy by increasing chunk size from 25% to approximately 33% of total vectors (changed divisor from 4.0 to 3.0). This adjustment reduces coordination overhead from excessive parallelization while maintaining protection against I/O saturation on external drives. The larger chunks provide better balance between parallel processing benefits and system resource efficiency during large-scale blockchain data computation. [crates/brk_computer/src/vecs/stateful/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.75/crates/brk_computer/src/vecs/stateful/mod.rs#L1304)

### Internal Changes

- **Cleaned up logging and removed redundant messages**: Streamlined logging output by removing duplicate and unnecessary log statements that did not provide meaningful information during computation processes, improving log clarity and reducing noise in system output.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.74...v0.0.75)

## [v0.0.74](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.74) - 2025-07-09

### Performance Improvements

- **Implemented chunked parallel processing to prevent I/O bottlenecks**: Introduced intelligent chunking system that limits concurrent operations to prevent overwhelming external storage devices, including high-performance Thunderbolt 4 SSDs. The system now processes vectors in chunks of approximately 25% of total vectors at a time, ensuring consistent performance regardless of storage device capabilities and preventing I/O saturation during large-scale Bitcoin data processing. [crates/brk_computer/src/vecs/stateful/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.74/crates/brk_computer/src/vecs/stateful/mod.rs#L1304-L1305)

### Architecture Changes

- **Unified processing pipeline for UTXO and address computations**: Replaced separate thread-based processing with a unified pipeline that handles both UTXO and address cohort vectors through a single processing flow. This architectural improvement uses the `Either` type to seamlessly process different vector types in the same pipeline, reducing complexity, improving error handling, and eliminating thread management overhead. The change provides more predictable performance characteristics and simplified resource management. [crates/brk_computer/src/vecs/stateful/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.74/crates/brk_computer/src/vecs/stateful/mod.rs#L1242-L1263)

### Internal Changes

- **Enhanced error handling and resource management**: Improved variable lifecycle management by declaring references upfront and reusing them throughout the computation process, reducing repeated access patterns and improving memory efficiency during large-scale blockchain analysis operations.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.73...v0.0.74)

## [v0.0.73](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.73) - 2025-07-09

### Breaking Changes

- **Removed brk_state crate and consolidated state management**: Eliminated the separate `brk_state` crate and integrated its functionality into the broader architecture using `brk_store`. This architectural simplification reduces complexity and improves maintainability by consolidating state management responsibilities into fewer, more focused components. Code that directly imported `brk_state` will need to be updated to use the new consolidated system. [Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.73/Cargo.toml), [crates/brk_computer/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.73/crates/brk_computer/Cargo.toml)

### Performance Improvements

- **Implemented zerocopy serialization optimizations**: Added advanced zero-copy operations through `zerocopy` and `zerocopy-derive` dependencies in the computation layer. This eliminates unnecessary memory allocations and data copying when processing large Bitcoin datasets, resulting in significant performance improvements for blockchain analysis and metric calculations, especially for memory-intensive operations. [crates/brk_computer/Cargo.toml](https://github.com/bitcoinresearchkit/brk/blob/v0.0.73/crates/brk_computer/Cargo.toml#L29-L30)

- **Enhanced serialization framework**: Integrated `bincode` for efficient binary serialization and `serde` for flexible data handling, providing faster and more memory-efficient data processing. These optimizations particularly benefit large-scale computations, data export operations, and inter-process communication by reducing serialization overhead and improving throughput.

### Internal Changes

- **Upgraded MCP framework**: Updated `brk_rmcp` from version 0.1.8 to 0.2.1, bringing significant improvements to the Model Context Protocol implementation with enhanced AI integration capabilities, better error handling, and improved API functionality for connecting external AI tools to BRK's blockchain data.

- **Added profiling build configuration**: Introduced dedicated profiling build profile that inherits from release but includes debug symbols, facilitating performance analysis and optimization work during development without compromising release build performance.

- **Enhanced code ergonomics**: Added `derive_deref` dependency to simplify dereferencing patterns and improve code readability throughout the computation layer, making the codebase more maintainable and reducing boilerplate code.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.71...v0.0.73)

## [v0.0.71](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.71) - 2025-06-25

### API Improvements

- **Enhanced API documentation with comprehensive schema descriptions**: Added detailed descriptions to all index types and API parameters using JSON Schema annotations. Each index type now includes clear explanations (e.g., "Date/day index", "Difficulty epoch index (equivalent to ~2 weeks)", "Halving epoch index (equivalent to ~4 years)"). API parameters now have enhanced descriptions explaining their behavior, such as inclusive/exclusive ranges and negative index handling. This significantly improves developer experience when using BRK's API by providing clear, self-documenting interfaces. [crates/brk_interface/src/index.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.71/crates/brk_interface/src/index.rs), [crates/brk_interface/src/params.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.71/crates/brk_interface/src/params.rs)

- **Standardized method naming for consistency**: Renamed `get_variant_count` to `get_vec_count` in the MCP interface to align with the actual API endpoint structure and improve naming consistency across the system. This change makes the API more intuitive and reduces confusion between different counting methods. [crates/brk_mcp/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.71/crates/brk_mcp/src/lib.rs#L59)

### Architecture Modernization

- **Upgraded MCP framework to latest tool routing system**: Implemented major architectural improvements by migrating from the legacy `tool_box` pattern to the modern `tool_router` system. This upgrade introduces better type safety, improved parameter handling through the `Parameters(...)` wrapper pattern, and more structured API definitions. The new system provides enhanced error handling, better documentation generation, and improved maintainability for AI integration features. [crates/brk_mcp/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.71/crates/brk_mcp/src/lib.rs#L27-L32)

### Breaking Changes

- **Updated MCP parameter handling system**: Modified parameter passing from attribute-based `#[tool(aggr)]` annotations to the new `Parameters<T>` wrapper system. This change affects how parameters are passed to MCP tools but provides better type safety and validation. Developers using the MCP interface will need to update their parameter handling code to work with the new system.

### Internal Changes

- **Updated core dependencies for improved functionality**: Upgraded `brk_rmcp` to version 0.1.8 and `schemars` to version 1.0.1, bringing bug fixes, performance improvements, and enhanced features. Also updated several other dependencies including `oxc_resolver` and `papaya` to their latest versions for better stability and performance.

- **Added development tooling configuration**: Included commented development path for `brk_rmcp` to facilitate local development and testing of MCP functionality.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.70...v0.0.71)

## [v0.0.70](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.70) - 2025-06-24

### User Experience

- **Enabled MCP (Model Context Protocol) by default**: AI integration is now enabled by default, making it easier for users to connect AI assistants and tools to BRK's blockchain data without manual configuration. Users can still disable MCP if needed, but the default behavior now promotes seamless AI-powered blockchain analysis workflows. This change significantly lowers the barrier to entry for AI-enhanced Bitcoin research. [crates/brk_cli/src/config.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.70/crates/brk_cli/src/config.rs#L91-L371)

### API Improvements

- **Simplified API endpoint structure for better usability**: Streamlined API endpoints by removing complex query parameters in favor of direct, intuitive paths. The height-to-OHLC endpoint now uses `/height-to-ohlc?from={}&to={}` instead of the previous `/query?index=height&values=ohlc&from={}&to={}` format, and similarly for dateindex endpoints. This makes the API more RESTful and easier to use for developers integrating with BRK's data services. [crates/brk_fetcher/src/brk.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.70/crates/brk_fetcher/src/brk.rs#L50-L100)

- **Updated API documentation and endpoint references**: Corrected the dataset variant count API endpoint reference in the README from `/vecs/variant-count` to `/vecs/vec-count` to reflect the actual API structure and ensure accurate documentation for developers using the public API. [README.md](https://github.com/bitcoinresearchkit/brk/blob/v0.0.70/README.md#L45)

### Code Organization

- **Flattened fetcher module structure for improved maintainability**: Reorganized the fetcher modules by moving all fetcher implementations from the nested `fetchers/` subdirectory directly to the `src/` root. This eliminates unnecessary module hierarchy, simplifies imports, and makes the codebase easier to navigate for developers working with price data fetching functionality. The change affects binance, kraken, BRK, and retry modules without changing their public APIs. [crates/brk_fetcher/src/](https://github.com/bitcoinresearchkit/brk/tree/v0.0.70/crates/brk_fetcher/src)

### Internal Changes

- **Code cleanup and documentation improvements**: Removed commented-out debug statements and dead code from the vector management system, improving code readability and maintenance. Also enhanced MCP tool descriptions with better punctuation and formatting for improved developer experience.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.69...v0.0.70)

## [v0.0.69](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.69) - 2025-06-24

### Performance Improvements

- **Optimized file handle management for better resource utilization**: Completely refactored the vector storage system to use on-demand file operations instead of persistent file handles. This architectural improvement eliminates file descriptor leaks, reduces memory pressure, and enables more robust handling of large datasets. Files are now opened when needed and immediately closed, preventing resource exhaustion when processing many concurrent operations. The new design also includes optimized header writing that conditionally returns file handles for better performance. [crates/brk_vec/](https://github.com/bitcoinresearchkit/brk/tree/v0.0.69/crates/brk_vec)

### Architecture Changes

- **Simplified vector initialization by removing parallel processing**: Streamlined the vector computation initialization from parallel threaded execution to sequential processing. While this may impact initialization speed, it eliminates threading complexity and potential race conditions, resulting in more predictable and maintainable code. This change improves system stability and reduces the potential for concurrency-related bugs. [crates/brk_computer/src/vecs/mod.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.69/crates/brk_computer/src/vecs/mod.rs#L47-L63)

### Bug Fixes

- **Reverted file descriptor limit to stable configuration**: Reduced the file descriptor limit back to 210,000 from the previous 420,000 setting. The higher limit may have caused system stability issues or compatibility problems with certain configurations. This reversion ensures reliable operation across different environments while the new file handle management provides better resource efficiency. [crates/brk_core/src/utils/rlimit.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.69/crates/brk_core/src/utils/rlimit.rs#L10)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.68...v0.0.69)

## [v0.0.68](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.68) - 2025-06-24

### Performance Improvements

- **Doubled file descriptor limit for enhanced scalability**: Increased the maximum number of simultaneously open files from 210,000 to 420,000. This significant improvement addresses performance bottlenecks when processing large Bitcoin datasets that require opening many files concurrently (block files, index files, computed datasets). The higher limit enables BRK to handle larger datasets and more concurrent operations without hitting system resource constraints that could cause errors or performance degradation. [crates/brk_core/src/utils/rlimit.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.68/crates/brk_core/src/utils/rlimit.rs#L10)

### User Experience

- **Enhanced CLI with standard command behaviors**: Added automatic `--version` and `--help` command support to the CLI configuration through clap derive attributes. This provides users with standard command-line interface behaviors and better discoverability of available options without requiring additional implementation code. [crates/brk_cli/src/config.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.68/crates/brk_cli/src/config.rs#L19)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.67...v0.0.68)

## [v0.0.67](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.67) - 2025-06-24

### New Features

- **Added Model Context Protocol (MCP) server support**: Introduced comprehensive MCP server implementation enabling AI assistants and external tools to connect to BRK's blockchain data through standardized protocols. This powerful integration allows AI systems to query Bitcoin data, perform analysis, and access BRK's computational capabilities through a well-defined interface, opening up new possibilities for AI-powered blockchain analysis tools. The MCP server provides secure, structured access to all of BRK's datasets and metrics.

- **Introduced standardized interface layer**: Added new `brk_interface` crate that provides a clean, well-documented API abstraction layer for external access to BRK's computational capabilities. This interface includes comprehensive schema generation, structured data serialization, and formatted output capabilities, making it easier for developers to integrate BRK into their applications and tools.

### Breaking Changes

- **Restructured workspace architecture**: Removed the legacy `brk_query` crate as part of a major architectural modernization. Query functionality has been consolidated into the new interface layer, providing a more cohesive and maintainable API structure. This change simplifies the codebase while improving functionality through better abstraction layers.

### Documentation

- **Comprehensive repository rebranding and migration**: Updated all historical changelog references to reflect the migration from `kibo-money/kibo` to `bitcoinresearchkit/brk`. This includes updating GitHub URLs, asset paths, and project names throughout the historical documentation. Also corrected branding for historical versions (satonomics → kibo → brk) to accurately reflect the project's evolution and maintain documentation consistency.

### Internal Changes

- **Optimized dependency management**: Streamlined the dependency tree by removing unused dependencies including `arc-swap` from `brk_store`, `jiff` from `brk_fetcher`, and `tabled` from `brk_cli`. These optimizations reduce build times and binary size while maintaining all functionality through more efficient architectural patterns.

- **Added auto-generated file management**: Enhanced build process by properly excluding auto-generated files (`vecid-to-indexes.js`) from version control, ensuring cleaner repository state and preventing conflicts from build artifacts.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.66...v0.0.67)

## [v0.0.66](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.66) - 2025-06-19

### New Features

- **Added comprehensive Cointime analysis module**: Introduced advanced blockchain economic analysis capabilities through a complete Cointime implementation. This powerful new module provides sophisticated metrics for understanding Bitcoin holder behavior and market dynamics, including coinblocks tracking (created/stored/destroyed), liveliness and vaultedness calculations, supply segmentation into active and vaulted components, derived price metrics (vaulted price, active price, true market mean), capitalization analysis (thermo cap, investor cap, vaulted cap, active cap), and cointime value flow tracking. These metrics enable deep insights into market cycles, holder behavior patterns, and the economic state of the Bitcoin network. [crates/brk_computer/src/vecs/cointime.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.66/crates/brk_computer/src/vecs/cointime.rs)

### Documentation

- **Enhanced CLI documentation and user experience**: Significantly improved the BRK CLI README with better formatting, corrected typos, and enhanced clarity. Added proper GitHub-style callouts for important information (Ubuntu installation requirements) and helpful tips (configuration persistence). Improved explanations of command usage patterns, updated documentation links to point to specific commit hashes for stability, and enhanced Cloudflare integration guidance with proper formatting. These improvements make BRK more accessible to new users and provide clearer guidance for setup and usage. [crates/brk_cli/README.md](https://github.com/bitcoinresearchkit/brk/blob/v0.0.66/crates/brk_cli/README.md)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.65...v0.0.66)

## [v0.0.65](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.65) - 2025-06-17

### Bug Fixes

- **Improved cohort analysis metric calculations**: Updated version numbers for cumulative net realized profit and loss calculations to ensure accurate computation of 30-day change metrics. This includes improvements to standard calculations, realized cap relative calculations, and market cap relative calculations for better cohort analysis accuracy. [crates/brk_computer/src/vecs/stateful/cohort.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.65/crates/brk_computer/src/vecs/stateful/cohort.rs#L951-L976)

### Performance Improvements

- **Streamlined chart data update mechanism**: Significantly simplified the chart update logic by replacing complex historical data comparison with a streamlined approach that only updates data points at or after the last existing timestamp. This eliminates unnecessary computation overhead from detailed value comparisons and debugging logic, resulting in faster chart rendering and improved user interface responsiveness. [websites/default/packages/lightweight-charts/wrapper.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.65/websites/default/packages/lightweight-charts/wrapper.js#L483-L491)

### Internal Changes

- **Updated web interface version tracking**: Synchronized version numbers in auto-generated files to maintain consistency between backend calculations and frontend display systems.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.64...v0.0.65)

## [v0.0.64](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.64) - 2025-06-17

### New Features

- **Added 4-year financial analysis metrics**: Introduced comprehensive 4-year statistical measures including 4-year simple moving average (`ratio_4y_sma`), 4-year standard deviation (`ratio_4y_sd`), and 4-year z-score (`ratio_4y_zscore`) for long-term market cycle analysis. These metrics enable identification of extreme market conditions over full Bitcoin market cycles, providing crucial insights for long-term trend analysis and valuation assessment. [crates/brk_computer/src/vecs/grouped/ratio_from_dateindex.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.64/crates/brk_computer/src/vecs/grouped/ratio_from_dateindex.rs)

### Internal Changes

- **Enhanced grouped vector builder with conditional naming**: Added intelligent naming logic that applies different suffixes based on computation position in series, enabling more descriptive names for final computations versus intermediate steps. This improves code organization and makes grouped computations more self-documenting. [crates/brk_computer/src/vecs/grouped/builder.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.64/crates/brk_computer/src/vecs/grouped/builder.rs#L133-L137)

- **Refactored z-score computation for code reusability**: Consolidated duplicate z-score calculation logic into a reusable `compute_zscore` method that accepts separate moving average and standard deviation inputs. This eliminates code duplication between 1-year and 4-year z-score calculations while improving maintainability and consistency.

- **Standardized statistical metric naming**: Renamed `ratio_standard_deviation` to `ratio_sd` for consistency with other abbreviated metric names throughout the codebase, improving code readability and maintaining naming conventions.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.63...v0.0.64)

## [v0.0.63](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.63) - 2025-06-16

### New Features

- **Enhanced Progressive Web App support**: Added comprehensive PWA configuration with device-specific splash screens and icons for seamless mobile and desktop app installation. Includes optimized assets for all major iOS device sizes and orientations, improving the native app experience when users install the web application on their devices. [websites/default/assets/pwa/](https://github.com/bitcoinresearchkit/brk/tree/v0.0.63/websites/default/assets/pwa)

### Performance Improvements

- **Optimized static file serving and caching**: Streamlined cache control logic by replacing complex string-based path matching with proper file extension detection. Simplified immutable cache rules to focus on essential static assets (images, JavaScript, maps) while removing unnecessary directory-based checks, resulting in more efficient file serving and better cache hit rates. [crates/brk_server/src/files/file.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.63/crates/brk_server/src/files/file.rs#L97-L109)

### Internal Changes

- **Improved file extension handling**: Replaced string-based file type detection with robust `path.extension()` method calls for better reliability and maintainability in static file processing. This architectural improvement reduces the likelihood of file type detection errors and makes the codebase more resilient to edge cases in file path handling.

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.62...v0.0.63)

## [v0.0.62](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.62) - 2025-06-16

### Bug Fixes

- **Improved error handling in bundler file operations**: Fixed potential panics in the bundler when processing entry files that don't contain expected "main" or ".js" strings. Replaced unsafe `.unwrap()` calls with proper `if let Some()` pattern matching to gracefully handle missing file content patterns. [crates/brk_bundler/src/lib.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.62/crates/brk_bundler/src/lib.rs#L52-L57)

- **Enhanced web application error resilience**: Added try-catch error handling around localStorage operations to prevent application crashes when localStorage is unavailable (such as in private browsing mode or restrictive environments). This ensures the web application remains functional even when local storage access is blocked. [websites/default/index.html](https://github.com/bitcoinresearchkit/brk/blob/v0.0.62/websites/default/index.html#L1857-L1865)

### Performance Improvements

- **Optimized chart rendering performance**: Streamlined the lightweight-charts data processing pipeline by removing unnecessary intermediate variables and simplifying data transformation logic. Improved time scale bar spacing algorithms for different time periods (months, quarters, years, decades) to provide better visual spacing and reduced computational overhead. [websites/default/packages/lightweight-charts/wrapper.js](https://github.com/bitcoinresearchkit/brk/blob/v0.0.62/websites/default/packages/lightweight-charts/wrapper.js)

### Internal Changes

- **Enhanced TypeScript support for web interface**: Reorganized TypeScript type definition generation to improve IntelliSense and code completion. Moved `@typedef` comments to proper positions and simplified object return structures for better developer experience when working with the web API. [crates/brk_server/src/api/query/bridge.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.62/crates/brk_server/src/api/query/bridge.rs#L64-L85)

- **Improved HTML5 compliance and service worker configuration**: Updated HTML doctype declaration for better standards compliance and enhanced service worker registration with explicit scope configuration for improved Progressive Web App functionality. [websites/default/index.html](https://github.com/bitcoinresearchkit/brk/blob/v0.0.62/websites/default/index.html)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.61...v0.0.62)

## [v0.0.61](https://github.com/bitcoinresearchkit/brk/releases/tag/v0.0.61) - 2025-06-15

### Bug Fixes

- **Fixed OHLC price continuity in financial data computation**: Implemented proper candlestick continuity logic where each trading day's opening price now equals the previous day's closing price. This ensures accurate financial charting and enables proper gap analysis by adjusting high and low prices when opening price gaps occur. [crates/brk_computer/src/vecs/fetched.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.61/crates/brk_computer/src/vecs/fetched.rs#L432-L443)

- **Improved error handling in block recap export functionality**: Enhanced error diagnostics by capturing and displaying the actual file system error instead of generic "No such file or directory" message. Now provides more accurate "Cannot write file" error with detailed error information for better debugging when export operations fail. [crates/brk_parser/src/blk_index_to_blk_recap.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.61/crates/brk_parser/src/blk_index_to_blk_recap.rs#L99-L103)

### Internal Changes

- **Added mutable dereferencing capability to OHLC data structures**: Extended all OHLC-related structs with `DerefMut` derive to enable direct mutable access to underlying price data. This architectural change supports the price continuity fix by allowing the system to modify opening, high, and low prices when implementing gap adjustments between trading periods. [crates/brk_core/src/structs/ohlc.rs](https://github.com/bitcoinresearchkit/brk/blob/v0.0.61/crates/brk_core/src/structs/ohlc.rs)

[View changes](https://github.com/bitcoinresearchkit/brk/compare/v0.0.59...v0.0.61)