- Added session-based shell execution with persistent shell instances and session management via sessionKey parameter.
- Added support for shell snapshots to initialize bash sessions with saved state via snapshotPath parameter.
- Added sessionEnv option to set environment variables once per session, separate from command-specific env variables.
- Added process group management functions (process_group_id and kill_process_group) for better process lifecycle control on Linux, macOS, and Windows.
- Changed env option to apply variables for the current command only, with session-level variables now managed via sessionEnv.
- Refactored shell execution to use async output queuing with enqueueChunk for proper chunk sequencing and improved timeout handling with process group termination.
- Added native shell execution API via brush-core with streaming output support and configurable timeouts.
- Migrated bash executor from persistent ptree-based shell sessions to native bindings with improved performance and simplified architecture.
- Removed persistent shell session module and replaced with native brush-core implementation for better resource management.
- Added executeShell() and abortShellExecution() functions to native bindings for shell command execution with cancellation support.
- Implemented shell execution with support for environment variables, working directory changes, and timeout handling.
- Renamed `EllipsisKind` enum to `Ellipsis` across all packages for clearer API naming.
- Refactored Rust text module from 356 to 155 lines with simplified state tracking using u32 ColorVal instead of enum ColorCode and named attribute constants.
- Removed `Env` parameter from public NAPI functions `truncate_to_width` and `extract_segments` to simplify API surface.
- Changed return type of `truncate_to_width` from `JsString` to `Either<JsString, Utf16String>` to support zero-copy returns.
- Removed early return optimization in `truncateToWidth()` function.
- Reordered native module search paths to prioritize repository build artifacts over system paths.
- Replaced SettingsManager class with new Settings singleton providing synchronous get/set API and background persistence.
- Introduced settings-schema.ts as single source of truth for all configuration definitions with 100+ settings organized into logical groups.
- Migrated from method-based settings access (getTheme(), setTheme()) to path-based access using dot notation (settings.get('theme'), settings.set('theme', value)).
- Removed 2035-line settings-manager.ts file and replaced with modular settings.ts (693 lines) and settings-schema.ts (836 lines) for improved maintainability.
- Unified settings schema into single source of truth eliminating duplicate definitions across settings-defs.ts and settings-manager.ts.
- Added head and tail parameters to bash tool for native output limiting without piping.
- Implemented automatic normalization of bash commands to extract and strip head/tail pipes and stderr redirects.
- Created bash-normalize utility module with normalizeBashCommand and applyHeadTail functions for command processing.
- Updated bash tool documentation to recommend using head/tail parameters instead of piping through shell commands.
- Added comprehensive test coverage for bash command normalization and head/tail filtering functionality.
- Added persistent shell session support for bash tool with environment variable preservation across commands.
- Added shellForceBasic setting to force bash/sh even if user's default shell is different (default: true).
- Added OMP_SHELL_PERSIST environment variable to control persistent shell behavior (set to 0 to disable).
- Restructured system prompt with coordinator-specific guidance for parallel task delegation.
- Added grep CLI subcommand with support for pattern matching, file globbing, context lines, and multiple output modes (content, files-with-matches, count).
- Added diff syntax highlighting support with distinct colors for inserted and deleted lines in code output.
- Implemented FileReader abstraction for cross-platform file reading with mmap support and 4MB size limit.
- Refactored worker pool initialization to support both compiled and development build environments using resolveWorkerSpecifier utility.
- Enhanced markdown rendering with improved inline style context handling and blockquote formatting with text wrapping.
- Replaced external strip-ansi dependency with Bun's built-in stripANSI method across all packages.
- Simplified find tool API by removing separate `path` parameter and consolidating pattern parsing into a single `pattern` parameter that includes the search path.
- Added automatic recursive search for simple patterns like `*.ts` by implicitly prefixing them with `**/` when no explicit path is provided.
- Implemented `parsePatternPath()` function to intelligently extract base directory and glob pattern from user input, supporting patterns like `src/**/*.tsx`, `lib/*.json`, and `*.md`.
- Fixed incorrect byte and line limit calculations in file read tool that were applying user limits to total selected content instead of just user-limited content.
- Updated test to use SettingsManager.getGlobalShellConfig() instead of shell.getShellConfig() for consistent shell configuration access.
- Reorganized import statements across multiple files for consistency and alphabetical ordering.
- Changed firstLinePreviewChunks from let to const in read tool since it is only mutated via array methods.
- Extracted process management utilities from coding-agent shell module into dedicated procmgr module in utils package.
- Migrated shell configuration retrieval to SettingsManager class with new getGlobalShellConfig() static method.
- Replaced custom killProcessTree() implementation with new terminate() function supporting graceful shutdown with timeout and AbortSignal.
- Updated ptree.ChildProcess to use generic type parameter for input stream masking and delegated process termination to procmgr.terminate().
- Centralized process management across coding-agent modules to use SettingsManager and procmgr utilities instead of standalone shell functions.
- Renamed package directory from packages/pi-utils to packages/utils.
- Updated all path aliases and references in tsconfig.base.json to reflect new package location.
- Updated workspace references in bun.lock and package.json to point to new packages/utils directory.
- Updated documentation and build scripts to reference the renamed utils package.
- Added native text utilities in pi-natives (visible width, truncation, slicing, segment extraction)
- Wired pi-tui to use native implementations with short-string JS fast path
- Optimized key matching via cached parsed key ids
- Refactored visual truncation to reuse Text instances
- Reduced theme color lookups by switching from Map to plain records
- Regenerated WASM artifacts
Benchmarks (after vs before, lower is better):
- truncateToWidth/ansi: 20.37ms vs 38.13ms (2000 iters)
- sliceWithWidth/ansi: 5.12ms vs 20.39ms
- extractSegments/ansi: 8.92ms vs 27.60ms
- truncateToVisualLines: 3.51ms vs 411.55ms (500 iters)
- visibleWidth/ansi: 0.24ms vs 0.31ms
- Consolidated grep, find, and image processing into a new `@oh-my-pi/pi-natives` WASM package.
- Eliminated subprocess overhead and simplified JS tool implementations.
- Updated CI to include Rust workspace, linting, formatting, and WASM build steps.
- Documented `Promise.withResolvers()` and `using` declarations for wasm-bindgen.
- Extracted delta event batching and throttling logic into AssistantMessageEventStream base class to eliminate duplication across test mocks.
- Changed access modifiers from private to protected in EventStream class to allow subclass customization of queue, waiting, and completion handling.
- Simplified MockAssistantStream implementations across five test files by removing custom event handling logic and delegating to AssistantMessageEventStream.
- Added protected methods deliver() and endWaiting() to EventStream to support subclass event delivery patterns.
- Implemented delta event type guard and merging utilities to consolidate event batching logic in one place.
- Migrated process spawning from `cspawn` to `spawnGroup` and `spawnAttached` APIs with explicit resource management using TypeScript's `using` statement.
- Refactored `ChildProcess` class to support process group management with new `isProcessGroup` getter and `[Symbol.dispose]()` method for automatic cleanup.
- Removed `cspawn` from public API exports in pi-utils, replacing it with `spawnGroup` and `spawnAttached` functions.
- Simplified `ChildProcess.kill()` method signature by removing signal parameter and eliminated `killAndWait()` method in favor of async disposable pattern.
- Converted `killChild` function to async implementation using Bun's `$` template and sleep-based polling for process termination.
- Added model preference matching system with ModelMatchPreferences and ModelPreferenceContext interfaces to enable intelligent model selection based on usage history and provider preferences.
- Implemented buildPreferenceContext and pickPreferredModel functions to rank and select models based on usage order, provider history, and deprioritization settings.
- Enhanced parseModelPattern function to accept optional ModelMatchPreferences parameter, enabling model resolution to consider user preferences and usage history.
- Updated model matching logic to prioritize models based on historical usage patterns and provider preferences when multiple candidates match a pattern.
- Extracted tool choice mapping logic into dedicated utility module for provider-specific format conversions.
- Refactored task summary generation to use template-based rendering instead of string concatenation.
- Migrated system prompt generation to use Handlebars templates with structured data instead of hardcoded strings.
- Extracted JTD to TypeScript conversion logic into dedicated utility module for schema documentation.
- Consolidated prompt template rendering across multiple modules using unified renderPromptTemplate function.
- Simplified type assertions in stream module to use generic OptionsForApi type instead of provider-specific types.
- Renamed 'complete' tool to 'submit_result' throughout codebase for clarity and consistency.
- Updated all tool references, function names, and variable names from 'complete' to 'submit_result' in executor, render, and tools modules.
- Renamed CompleteTool class to SubmitResultTool and CompleteDetails interface to SubmitResultDetails.
- Updated agent prompts and documentation to reference the new 'submit_result' tool name.
- Reorganized task.md prompt to move critical guidance to the top and restructure instructions for better clarity.
- Added ToolChoice type and toolChoice parameter support across all AI providers (OpenAI, Azure OpenAI, Anthropic, Google) enabling fine-grained control over tool/function selection during LLM calls.
- Added toolChoice override capability to Agent.prompt() method and session prompt options allowing callers to control tool selection behavior per request.
- Added provider-specific tool choice mapping functions (mapAnthropicToolChoice, mapGoogleToolChoice, mapOpenAiToolChoice) to normalize tool choice formats across different LLM APIs.
- Removed kernel heartbeat/ping mechanism from PythonKernel, simplifying health monitoring by relying on direct isAlive() checks instead of periodic HTTP requests.
- Extracted type guard functions for improved type safety and code reusability across RPC and migration modules.
- Centralized AgentEvent type validation into a dedicated Set constant and type guard function in rpc-client.
- Replaced inline type assertions with type guard functions in RPC response and event handling logic.
- Refactored test utilities to use parseSessionEntries helper and type guard functions for cleaner test code.
- Added reasoning content configuration properties to OpenAI compatibility settings.
- Replaced external JSON/JSONL parsing libraries with Bun's built-in JSON5 and JSONL APIs across all packages.
- Removed dependencies: json5, ndjson, get-east-asian-width, json-stringify-safe, split2, through2, and @types/ndjson.
- Replaced custom text width and ANSI wrapping implementations with Bun.stringWidth() and Bun.wrapAnsi() APIs.
- Updated Bun type definitions from ^1.2.17 to ^1.2.18 and bun-types from ^1.3.5 to ^1.3.7.
- Refactored JSONL parsing throughout codebase to use Bun.JSONL.parse() and Bun.JSONL.parseChunk() with improved buffer management and error handling.
- Updated test assertions to use Bun.stringWidth() for dynamic width calculations instead of hardcoded values.
- Plan mode provides structured workflow where agents propose plans for user approval before execution.
- Added plan:// internal URL protocol for accessing plan files and injecting plan-mode context into subagent prompts.
- Added plan mode toggle shortcut and paused status indicator in status line.
- Fixed plan reference injection to properly pass workflow state to plan-mode system prompts.
- Improved autocomplete fuzzy matching to support subsequence matching for skill suggestions.
- Removed Prettier configuration files (.prettierignore and .prettierrc) and migrated formatting to Biome.
- Updated Biome configuration from version 2.3.11 to 2.3.12 and changed arrowParentheses rule from 'always' to 'asNeeded'.
- Pinned @biomejs/biome dependency to exact version 2.3.12 in package.json and bun.lock.
- Applied consistent arrow function formatting across 489 files by removing unnecessary parentheses around single parameters.
- Removed blank lines after comment blocks and reorganized imports for consistency across the codebase.
- Changed loadCustomModels from async to sync using fs.readFileSync for immediate resolution.
- Updated discoverModels to return synchronously, removing await from main.ts, pipeline.ts, and commit index.ts.
- Migrated sdk.ts to use node:fs instead of node:fs/promises for synchronous operations.
- Refactored scanDirectoryForSkills to use recursive traversal instead of batch Promise.all.
- Added tarball Dockerfile for testing npm publish/install flow with verdaccio registry.
- Converted named imports from node modules (fs, path, os) to namespace imports across all packages.
- Extended extension loader error handling with isEacces and hasFsCode type guards.
- Converted readdirSync, readFileSync, and statSync to async readdir, readFile, stat across skills and agent discovery.
- Made scanDirectoryForSkills async and refactored custom directory scanning to use Promise.all for concurrent processing.
- Updated agent discovery to use fs/promises for async file reading and refactored helper patterns.
- Added AgentParsingError exception class for better error handling during agent parsing.
- Added filesystem error type guards (isEnoent, isEacces, isPerm, etc.) to pi-utils for safe error checking.
- Added color manipulation utilities to pi-utils for accessibility features.
- Added color-blind mode setting to settings manager.
- Migrated plugins, settings, and config modules from sync to async file operations.
- Updated error handling to use new pi-utils type guards for type-safe checking.
- Removed WASM generation script; use Bun `wasm?raw` loader for imports.
- Added bunfig.toml with loaders for `.md`, `.py`, and `.wasm?raw` text imports.
- Added types/assets/index.d.ts for global TypeScript module declarations.
- Unified TypeScript configuration with tsgo-based checking across monorepo.
- Removed build and WASM steps from install and publish pipelines.
- Added tsconfig.publish.json files to all packages with optimized publish-time configuration.
- Updated all package.json scripts with prepublishOnly hooks for correct type checking during publish.
- Added @oh-my-pi/omp-stats path mappings to root tsconfig.json for consistent imports.
- Added WASM generation script for photon module and integrated into install:dev script.
- Added mermaid rendering with terminal graphics for markdown output in iTerm2 and Kitty terminals.
- Implemented two-level mermaid caching with deduplication by content hash.
- Added background mermaid pre-rendering in assistant messages for responsive display.
- Implemented Python kernel session pooling with MAX_KERNEL_SESSIONS limit and idle cleanup timer.
- Refactored commit agent to remove unused FileObservation type and improve prompts.
- Updated test utilities to use AuthStorage.create() async factory method.
- Added antigravity provider support for image generation with Google Cloud authentication.
- Added support for google-antigravity API credentials in model registry.
- Added antigravity-specific request handling with SSE streaming.
- Added projectId parameter to antigravity credentials parsing.
- Added antigravity provider to preferred image provider selection.
- converted relative imports to path aliases ($c/*, $ai/*, $tui/*, etc.) across all packages
- added per-package tsconfig.json with complete path mappings for runtime resolution
- set importModuleSpecifier to non-relative for IDE auto-import preferences
- updated dev script to run from monorepo root for consistent path resolution
- Added output-utils module with tail buffer and artifact allocation helpers.
- Added tool-result module for standardized tool result construction with metadata.
- Replaced inline output truncation with structured metadata system across all tools.
- Updated executors to track detailed output statistics instead of full file paths.
- Standardized artifact storage using pre-allocated paths instead of inline writing.
- Simplified Python gateway coordination by removing reference counting and idle timeout functionality.
- Updated Python kernel initialization to support environment variable setup and working directory configuration.
- Modified interactive status display to show Python and venv paths instead of client counts.
- Updated system prompt to clarify CHECKPOINT step 0 timing after user request completion.
- Added artifact storage system with artifact:// URL protocol for truncated outputs.
- Added structured output metadata system with OutputMetaBuilder for consistent notices.
- Added standardized tool error types (ToolError, MultiError, ToolAbortError).
- Updated all tools to use structured metadata instead of inline notices.
- Removed activeForm field from TodoItem interface and simplified todo display logic.
- Converted dynamic imports to static imports in installer and exa tools.
- Renamed task parameter from vars to args throughout task tool interface.
- Simplified task template validation by removing strict placeholder requirements.
- Renamed task parameter from vars to args throughout task tool interface.
- Enhanced task template rendering with built-in {{id}} and {{description}} placeholders.
- Simplified task template validation by removing strict placeholder requirements.
- Streamlined CHECKPOINT step requirements in system prompts.
- Added internal URL routing system with agent:// and skill:// protocol handlers.
- Enhanced fetch tool to support internal URLs and JSON extraction from agent outputs.
- Extended read tool to handle internal URLs with pagination and query extraction.
- Removed Output tool and replaced functionality with agent:// URL integration.
- Replaced minimatch dependency with Bun.Glob for pattern matching across modules.
- Renamed web_fetch tool to fetch for consistency across codebase and documentation.
- Removed format parameter from output tool and added automatic JSON to YAML conversion.
- Updated tool documentation and CLI help text to reflect tool name changes.
- Adjusted output truncation limits for bash and python tools.
- Standardized timeout parameters across all tools to use seconds instead of milliseconds.
- Added automatic conversion and validation for timeout values with reasonable clamping ranges.
- Renamed web-search parameter from num_results to limit for consistency.
- Updated parameter naming from camelCase to snake_case format across tools.
- Added cell-by-cell Python execution tracking with duration and exit codes.
- Added template system with {{placeholders}} for task tool context rendering.
- Enhanced patch applicator to preserve exact indentation when intended.
- Changed Python tool to use cells array instead of single code parameter.
- Updated task tool schema to require vars instead of task field.
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