- Added designer model role for UI/UX design tasks with Gemini 3.1 Pro as default model.
- Implemented model role fallback list support enabling automatic fallback to next available model when primary is unavailable.
- Refactored model role resolution to support multiple fallback patterns per role with thinking level mapping.
- Updated designer agent to use pi/designer role alias instead of explicit model list, removing spawns configuration.
- Added test coverage for model resolver fallback patterns and designer role override preferences.
- Added test coverage for geminiImageTool X-Title header routing through OpenRouter.
- Fixed stale diagnostics being reused after unrelated file publishes by clearing cached diagnostics before refreshing file state.
- Added regression test to verify diagnostics cache is cleared when refreshing files.
- Extracted result building logic into reusable buildResult function to eliminate duplication across three code paths.
- Consolidated import of natives module to use namespace import instead of destructured imports for consistency.
- Reorganized signal timeout initialization to occur before conditional branches for clarity.
- Added test case verifying mtime-based sorting of recursive filename matches.
- Added `extractReadableFromHtml()` utility function with dual-path content extraction using Readability library and CSS selector fallback.
- Integrated Turndown library with GitHub Flavored Markdown plugin for improved HTML-to-markdown conversion supporting tables, strikethrough, and task lists.
- Refactored `getPageReadable()` action to use new extraction function, consolidating content parsing logic and improving maintainability.
- Added TypeScript type declarations for turndown-plugin-gfm module with custom Turndown rules for enhanced markdown formatting.
- Refactored chunk rendering to compute prologue and body line counts separately via new `chunk_head_body_lines()` function.
- Updated ellipsis marker format from line count to line range selection syntax (e.g., 'to expand above/below').
- Modified `render()` method signature to accept `head_lines` and `body_lines` parameters for precise line count display.
- Simplified no-changes response in chunk edit mode to omit redundant text when content matches.
- Expanded chunk-edit documentation with compound statement examples and region suffix behavior for non-code formats.
- Extracted diagnostic target resolution logic into new `resolveDiagnosticTargets()` utility function with glob pattern support.
- Consolidated glob pattern detection and file matching logic by replacing conditional branches with unified utility call.
- Added file existence checking with stat before glob expansion to handle bracket paths as literal targets.
- Added test coverage for bracket path handling in diagnostic target resolution.
- Simplified chunk region notation from @head/@body/@tail/@decl to ^/~ suffix format across all modules.
- Removed ChunkRegion::Tail and ChunkRegion::Decl enum variants and updated region matching logic accordingly.
- Added call-with-callback pattern detection via try_promote_call_with_callback() and trailing_callback_body() functions.
- Updated documentation and test fixtures to reflect new region selector syntax throughout codebase.
- Extracted `raceWithAbort()` utility to pi-utils package for reuse across projects.
- Replaced local `raceAbort()` implementation with imported `raceWithAbort()` from pi-utils.
- Refactored cleanup timer to use async iterator pattern with `timers.setInterval()` instead of callback-based `setInterval()`.
- Converted `#cleanupIdleSessions()` and `#disposeSession()` from async to synchronous methods with async cleanup loop delegated to `#runCleanupLoop()`.
- Extracted tab width resolution from pi-natives to pi-utils with EditorConfig caching support.
- Made tabWidth parameter required in native text functions (visibleWidth, truncateToWidth, wrapTextWithAnsi, sliceWithWidth, extractSegments).
- Removed process-wide tab width state management from pi-natives text module.
- Consolidated wrapper node promotion logic in chunk classification with abbreviated string representations.
- Removed path-clean and pathdiff dependencies from pi-natives.
- Updated all consuming packages to import tab width functions from pi-utils and pass explicit tabWidth parameters.
- Migrated language classifiers from imperative methods to declarative semantic rule tables with ClassifierTables and StructuralOverrides.
- Extracted node shape analysis into dedicated shape module with field priority constants and helper functions for AST traversal.
- Added schema module with language-aware node metadata and thread-local language context management.
- Centralized environment variable parsing across codebase using $flag(), $envpos(), and isBunTestRuntime() utilities.
- Added PI_CHUNK_AUTOINDENT configuration to control indentation normalization in chunk read/edit operations.
- Enhanced system prompt with instruction priority, output contract, tool persistence, and completeness guidelines.
- Corrected markdown section spacing logic to preserve blank lines between inserted sections and following headings.
- Added markdown-aware spacing detection to handle FirstChild, LastChild, Before, and After insert positions correctly.
- Added two test cases validating blank line preservation in markdown After and Append operations.
- Reformatted doc comments in RenderParams and ReadRenderParams for line length compliance.
- Added `/force` slash command and `ToolChoiceQueue` system for managing tool-choice directives with lifecycle callbacks and requeue semantics.
- Added `setForcedToolChoice()`, `peekQueueInvoker()`, `buildToolChoice()`, `steer()`, and `getToolChoiceQueue()` methods to AgentSession and ToolSession APIs.
- Refactored tool-choice override mechanism from simple override to queue-based system with generator directives, lifecycle callbacks, and requeue preservation.
- Removed `PendingActionStore` class and replaced with `ToolChoiceQueue`; updated `ResolveTool` and custom tool loader to use queue invokers.
- Fixed tool-choice queue cleanup on agent loop abort and requeue semantics to preserve callbacks across abort cycles.
- Added support for embedded URL selectors with `:raw` and `:L#-L#` line range syntax in read command.
- Implemented `parseReadUrlTarget()` function to parse and validate URL read targets with line range support.
- Updated read CLI to delegate URL inputs through read tool pipeline instead of treating as local file paths.
- Added comprehensive test coverage for URL selector parsing and CLI URL delegation.
- Refactored URL handling in read tool to use structured `ParsedReadUrlTarget` object.
- Added `@decl` chunk region selector for targeting semantic declarations without leading trivia.
- Updated chunk edit documentation with visual region boundary diagram and critical narrowest-region requirement warning.
- Implemented `Decl` variant across Rust types, NAPI bindings, and TypeScript definitions with full region range logic.
- Added inline hunks emission for effectively-leaf chunks to preserve hunks when children are filtered by focus.
- Improved type safety in LSP startup test by replacing truthy check with explicit function type check.
- Extracted chunk tree formatting logic into dedicated `format_selector_tree()` function for reuse across error handling.
- Refactored error messages to display chunk children as hierarchical tree structure with line numbers and signatures instead of comma-separated lists.
- Removed `format_chunk_ref()` helper and consolidated formatting logic into tree-based error hint generation.
- Updated test assertions to validate tree-formatted output with regex patterns matching branch symbols and structure.
- Added mocks for process I/O operations to prevent terminal escape sequences during LSP startup test.
- Reordered cleanup in afterEach to stop mode before restoring mocks, ensuring proper teardown sequence.
- Migrated all package tsconfig files to extend tsconfig.workspace.json for unified TypeScript configuration across monorepo.
- Consolidated build and check scripts across 10+ packages to use biome for linting/formatting with separate type checking via tsgo.
- Renamed build scripts from build:native and build:binary to build for simplified command naming across packages/natives and packages/coding-agent.
- Refactored CI workflow to invoke bun tasks instead of inline shell scripts, reducing workflow complexity by 40+ lines.
- Removed sync-exports.ts and repro-stuck.ts scripts; deleted path aliases from tsconfig.base.json in favor of workspace-based configuration.
- Updated turbo.json with new task definitions (check:types, lint, fmt, fix) and removed build:native/embed:native tasks.
- Refactored test suite to use top-level hooks instead of describe block for improved test isolation.
- Enhanced streaming mock to support delayed delta emission via waitBeforeFirstDelta promise.
- Improved auto-generated file abort test with precise timing control to verify abort occurs before delta updates.
- Fixed file not found error handling in auto-generated marker detection to gracefully return undefined instead of propagating errors.
- Made assertEditableFileContent function synchronous to simplify API and improve error handling consistency.
- Updated test assertions to match synchronous function behavior using toThrow instead of rejects patterns.
- Removed obsolete test case for doc comment preservation during replace operations.
- Added `onAssistantMessageEvent` callback to Agent API for inspecting and aborting assistant streaming events.
- Added `setAssistantMessageEventInterceptor()` method to dynamically update assistant message event handlers.
- Converted `checkAutoGeneratedFileContent()` from async to synchronous for improved streaming edit abort detection performance.
- Implemented LRU caching in auto-generated file detection with early path-based checks to prevent unnecessary edits.
- Refactored streaming edit pre-caching to use assistant message event interception for real-time abort capability.
- Extracted `peekFile()` utility for efficient file prefix reading with pooled buffer reuse strategy.
- Extracted image metadata detection and MIME type utilities to @oh-my-pi/pi-utils package for shared use across projects.
- Consolidated image-input.ts and mime.ts modules into image-loading.ts with simplified API removing redundant metadata parameters.
- Updated all import paths across coding-agent to use readImageMetadata from @oh-my-pi/pi-utils instead of local utilities.
- Added peek-file utility module to @oh-my-pi/pi-utils with buffer pooling for efficient file header reading.
- Remove pi-ref.ts deferred barrel import (no longer needed after circular dep fix)
- Update extension/hook/custom-tool/custom-command loaders to use direct imports
- Fix warmPythonEnvironment mock return type in python tool tests (add docs field)
- Remove unused ParsedChunkTarget type alias (lint error)
- Increase setImmediate timing in history storage compat test
- Mock warmPythonEnvironment in python tool tests
- Fix tlaplus LSP test to spy on $which instead of Bun.which
- Added bounds clamping to prologue and epilogue byte calculations to prevent out-of-range boundary violations.
- Extended chunk boundaries for indent-based languages when epilogue exceeds calculated range with trailing newline.
- Added comprehensive test coverage for Python chunk editing operations including body/head replacement and indentation preservation.
- Extracted working directory formatting logic into reusable utility function and applied tab sanitization to bash command previews.
- Renamed ChunkRegion::Inner variant to Body across Rust and TypeScript for clearer semantics.
- Renamed chunk edit tool parameter from target to sel and made op required instead of optional.
- Removed region aliases (prologue, epilogue, inner) and simplified region validation to accept only head, body, tail.
- Replaced db.exec() calls with db.run() for SQL execution in auth-storage, agent-storage, and history-storage.
- Enhanced chunk edit documentation with comprehensive examples, indentation rules, and CRC refresh guidance.
- Improved chunk statement merging logic to consolidate leaf statements into parent function bodies by default.
- Added Auto QA tool (`report_tool_issue`) for automated tracking of unexpected tool behavior with environment variable and setting support.
- Added Python tool environment warmup on first execution to ensure prelude helpers are available before use.
- Fixed Python prelude introspection to respect execution timeout and signal options, preventing hangs.
- Refactored prelude documentation caching and loading logic into reusable helper functions with test environment awareness.
- Enhanced kernel introspection with optional timeout and signal parameters for better execution control.
- Added system prompt guidance to encourage agents to report tool issues via Auto QA when available.
- Refactored chunk anchor format from bracket notation to marker-based syntax with +++ and --- delimiters.
- Renamed chunk edit regions from @container/@prologue/@body/@epilogue to @head/@inner/@tail for clearer semantics.
- Simplified line-number selector resolution to auto-convert line targets to chunk paths with checksum format.
- Removed PI_DEV debug addon loading logic; PI_DEV now only enables loader diagnostics without changing candidate filenames.
- Added full-name aliases for chunk kind patterns (decls, expr, fn, meth, mod, params, ret, stmts, var) alongside abbreviated forms.
- Refactored sanitize_node_kind() to return &str instead of String; adjusted identifier passing logic across AST modules.
- Added real-time LSP server status updates in welcome banner when background warmup completes.
- Changed welcome banner status icon from warning to muted pending symbol for improved visual clarity.
- Extracted LSP server conversion logic into dedicated helper methods for better maintainability.
- Added comprehensive test coverage for interactive mode LSP startup welcome banner updates.
- Refactored logger.time() API to accept function references and arguments separately instead of wrapped callbacks.
- Replaced RingBuffer-based timing with wall-clock markers and async span tracking for improved timing accuracy.
- Updated 20+ call sites across executor, kernel, main, and tools modules to use new logger.time() signature.
- Removed parsePath() helper function and inlined path.split() calls in settings module.
- Added test case verifying model selection without auth validation during startup.
- Added multi-session support to ACP mode enabling session forking, resumption, and closure operations.
- Added session model state reporting and unstable_setSessionModel RPC command for direct model configuration.
- Added turn-level usage tracking and stable message ID tracking for assistant chunks in ACP responses.
- Added Settings.cloneForCwd() method and ExtensionRunner.getFlagValues() for configuration isolation across sessions.
- Fixed ACP session cleanup to properly cancel in-flight prompts and dispose resources on disconnect.
- Refactored AcpAgent to manage multiple concurrent sessions with per-session lifecycle instead of single session.
- Refactored chunk tree initialization to use explicit prologue/epilogue byte boundaries instead of None values.
- Extracted chunk resolution logic to use split_selector_crc_and_region() helper for improved code reuse.
- Reorganized package.json exports across multiple modules (autoresearch, cli, dap, edit, modes) for better API surface clarity.
- Updated test expectations for Go receiver method rendering and chunk selector formats to match refactored output.
- Consolidated notebook conversion logic and removed unused _createErrorToolResult helper function.
- Improved leading trivia preservation in chunk edits by detecting and maintaining line prefix whitespace.
- Extracted prompt rendering and formatting utilities from coding-agent to centralized pi-utils package with new API surface (prompt.render, prompt.format, prompt.registerHelper).
- Migrated parseFrontmatter utility from coding-agent to pi-utils package; updated 8 files to import from @oh-my-pi/pi-utils.
- Removed 170-line prompt-format.ts module and consolidated 192 lines of Handlebars helper registrations into pi-utils prompt module.
- Updated 60+ files across coding-agent and typescript-edit-benchmark to use new prompt.render() and prompt.format() API from pi-utils.
- Simplified prompt-templates.ts by delegating core functionality to pi-utils while retaining custom helper registrations (jtdToTypeScript, jsonStringify, etc.).
- Replaced all Bun.which() calls with $which() utility from @oh-my-pi/pi-utils across 22 files.
- Removed findBashOnPath() wrapper function from procmgr.ts, consolidating binary path resolution.
- Updated AGENTS.md documentation to reflect new $which() API usage pattern.
- Centralized binary detection logic through shared utility, reducing code duplication.
- Added region-based chunk targeting with @container, @prologue, @body, @epilogue selectors for precise edit operations.
- Simplified chunk edit operations from 6 variants to 5 (replace, before, after, prepend, append) with unified region parameter.
- Removed checksum requirement from insert operations; only replace operations require #CRC suffix in selector.
- Added canonical indentation normalization with normalize_indent parameter for consistent tab-based rendering across file types.
- Refactored chunk selector format from separate crc/anchor fields to unified selector#CRC@region syntax for mutations.
- Added UnsupportedRegion status to chunk read operations for explicit handling of region availability per chunk type.
- Reorganized edit tool from `patch/` to `edit/` directory with dedicated mode subdirectories (chunk, patch, hashline, replace).
- Replaced line-scoped edit operations with substring-based `find` parameter and added `replace_body` operation for preserving signatures.
- Added chunk focus modes (Expanded, Collapsed, Container) and focused rendering to display only touched chunks and adjacent siblings.
- Implemented notebook (ipynb) language support with virtual source conversion and cell-based chunk parsing.
- Enhanced chunk edit error messages with consistent checksum mismatch reporting and improved chunk selector auto-resolution.
- Extracted edit mode implementations into separate modules with improved helper functions and LSP integration for diagnostics.
- Eager todo enforcement now skips prompts ending with question marks or exclamation marks, treating them as queries or commands rather than statements requiring task planning.
- Added 2 test cases validating that eager todo enforcement is skipped for prompts ending with question and exclamation marks.
- Added fully-qualified anchor paths in chunk read output showing complete path hierarchy with CRC checksums.
- Added exact chunk selector resolution with CRC validation to enforce canonical chunk paths in edit operations.
- Added `?` selector option to read syntax-aware chunks by canonical path listing when anchor paths are unclear.
- Improved tree-sitter range handling with `end_row_as_line()` function to correctly convert half-open ranges to 1-indexed line numbers.
- Extracted anchor label logic into `chunk_anchor_label()` const function and consolidated style-based selection.
- Removed --dev flag support from native build pipeline and dev:native npm scripts.
- Fixed plan review previews to re-append at the chat tail on refresh, keeping them adjacent to the active selector instead of updating off-screen.
- Added comprehensive test coverage for plan review rendering behavior across multiple refresh cycles.
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