Replace VSCode extension impersonation (client ID Iv1.b507a08c87ecfe98,
User-Agent GitHubCopilotChat/0.35.0) with the opencode OAuth app
(Ov23li8tweQw6odWQebz, User-Agent opencode/1.3.15).
Key changes:
- OAuth device flow now uses JSON body encoding and opencode headers
- GitHub OAuth token is used directly for all API requests; no JWT
exchange or refresh cycle needed
- Base URL changed from api.individual.githubcopilot.com to
api.githubcopilot.com across models.json, openai-compat.ts, and
the oauth module
- Removed proxy-ep JWT base URL extraction from github-copilot-headers.ts
and openai-compat.ts (resolveGitHubCopilotBaseUrl now passes through
the model baseUrl unchanged)
- refreshGitHubCopilotToken is now a synchronous identity return
- All 25 bundled Copilot model definitions updated to new headers/baseUrl
- Tests updated to reflect plain GitHub token format and new base URL
Existing users will need to re-authenticate once with /login github-copilot.
Move live stats (tokens, tools, duration) from the header — which scrolls
above the TUI viewport for long transcripts — to a stable Text component
placed after the viewerContainer. Stats are updated in-place via setText()
so the diff algorithm sees changes near the bottom of rendered output,
avoiding the fullRender(true) trigger when firstChanged < viewportTop.
Previously every ~150ms progress update changed the header stats line,
which sat above the viewport for large transcripts. The TUI's safety
check (firstChanged < previousContentViewportTop) forced a full screen
clear and re-render each cycle. In multiplexers (tmux/zellij) this
produced visible repetitive scrolling because scrollback is preserved
across clears.
- Changed anchor marker format from `+++`/`---` to `[<`/`>]` syntax in chunk rendering and documentation.
- Refactored render_i() to accept marker tuple (open, close) instead of single string for symmetric anchor pairs.
- Updated 94 lines of prompt documentation to reflect new anchor syntax in examples and instructions.
- 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 PI_STRICT_EDIT_MODE environment variable to control model-specific edit mode defaults.
- Wrapped model-specific edit mode logic behind PI_STRICT_EDIT_MODE condition for conditional behavior.
- Replaced Bun.env direct access with $env utility for consistent environment variable handling.
- Updated rate-edit-tool and typescript-edit-benchmark to set PI_STRICT_EDIT_MODE in test environments.
- Enhanced slash command handlers to return remaining text as prompt input instead of consuming input entirely.
- Updated slash command parser to recognize both whitespace and colon (`:`) as command argument separators.
- Modified executeBuiltinSlashCommand return type to support string (remaining text) or boolean (consumed/not matched).
- Updated input controller to handle remaining text from slash commands and use it as prompt input.
- Renamed indent normalization functions from tab-based to space-based naming (normalize_to_tabs -> compact_indent, denormalize_from_tabs -> expand_indent).
- Changed canonical indentation representation from tab characters to single leading spaces per indent level across chunk rendering and editing.
- Updated documentation and type annotations to reflect space-based indentation convention in chunk edit tool and native bindings.
- Simplified indent expansion logic to count whitespace characters instead of parsing individual characters.
- 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.
- Extracted `structuredCloneJSON()` utility to centralized package for consistent deep cloning with JSON fallback.
- Consolidated duplicate cloning logic across openai-responses, openai-responses-shared, and validation modules.
- Added resilience to message cloning in extension runner with try-catch fallback for non-cloneable objects.
- Optimized context emission in extension runner by skipping message cloning when no handlers exist.
- Added optional `contentIndex` field to AssistantMessageEvent variants for type consistency.
- 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.
- Renamed chunk region identifiers from Container/Prologue/Body/Epilogue to Head/Inner/Tail with updated semantics.
- Changed default chunk edit region behavior to omit @region suffix for full chunk targeting instead of explicit @container.
- Made trait and interface members addressable by preventing collapsing in chunk resolution logic.
- Updated chunk read and edit documentation with new region names and simplified selector examples.
- Refactored region handling to use Option<ChunkRegion> for optional region targeting across Rust and TypeScript implementations.
- Added ParsedSelector struct and is_known_region_name() validation function for improved region parsing.
- 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.
- Made Codex websocket prewarm asynchronous and non-blocking during session creation for faster startup.
- Added Codex websocket status updates in interactive mode when prewarm completes or fails.
- Introduced `getOpenAICodexTransportDetails()` to determine transport preferences before prewarm initialization.
- Refactored Codex prewarm to fire in background without awaiting, matching LSP server warmup pattern.
- Updated CHANGELOG entries for ai and coding-agent packages to reflect Codex startup event monitoring and async prewarm behavior.
- 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 asynchronous LSP server discovery and warmup at startup via `discoverStartupLspServers()` function.
- Added LSP startup event channel (`lsp:startup`) for real-time server status notifications during warmup.
- Added `LspStartupServerInfo` type to track LSP server status (connecting, ready, error) throughout lifecycle.
- Changed LSP server warmup from blocking synchronous operation to non-blocking background task.
- Refactored interactive mode to subscribe to LSP startup events and display real-time server status updates.
- Added comprehensive code-editing tool evaluation framework with `rate-edit-tool.py` supporting multi-model benchmarking across TypeScript, Rust, Python, and Markdown.
- Enhanced chunk edit error messages to display fresh chunk context with resolved selectors and anchors for improved debugging.
- Added `--no-lsp` flag to benchmark RPC arguments for TypeScript edit task evaluation.
- Improved chunk body boundary calculation to correctly include closing line indentation in epilogue.
- Added comprehensive benchmark results dataset (`all_models_results.json`) with performance metrics for 6 AI models.
- Enhanced chunk-edit documentation with clarified `@body` selector behavior and append/prepend examples.
- 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.
- Added host tool execution framework with HostTool, HostToolContext, and host_tool() factory for custom tool integration.
- Added RpcConcurrencyError exception and _PromptLifecycleCoordinator to enforce single-flight constraint on prompt lifecycle methods.
- Enhanced JSON parsing with 10 validation helpers and enum frozensets for safe field extraction with detailed error messages.
- Replaced manual event/error list management with _BoundedHistory for bounded-size history with offset tracking.
- Added deep JSON cloning to prevent external mutations of stored payloads and improved UTF-8 error handling in subprocess stderr.
- Added custom_tools parameter to RpcClient and set_custom_tools() method for runtime tool registration.
- Extracted line-hash utilities into dedicated module for improved code organization.
- Moved computeLineHash, formatLineHash, and HASHLINE_NIBBLE_ALPHABET from hashline.ts to new line-hash.ts module.
- Updated import paths across 6 files to reference new line-hash module location.
- Consolidated line-hashing functionality into single-responsibility module without behavior changes.
- 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.).
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