- Recomputed `tools.discoveryMode: "auto"` in the deferred MCP closure in `sdk.ts` once the real tool count is known: a toolset crossing the threshold now flips discovery on, registers and activates `search_tool_bm25`, and skips `activateAll` instead of force-activating every MCP tool.
- Guarded the deferred MCP task against disposed sessions: added `AgentSession.isDisposed` and `enableMCPDiscovery()`, and the late connect now calls `disconnectAll()` instead of refreshing tools onto a dead session.
- Cleared `#fastPathKey`/`#fastPathItems` in `AssistantMessageComponent.invalidate()` so theme/symbol changes rebuild reused Markdown children instead of keeping stale captured themes.
- Memoized unusable read summaries as a `false` sentinel in `read.ts` so the per-session LRU no longer retains full sources of unsummarizable files.
- Broadened `HAS_REF_DEF` in `markdown.ts` to match backslash-escaped reference labels (`[a\]b]: x`) and cleared frozen stream-lex state on blank `setText()`.
- Added regression tests: deferred auto-discovery flip and mid-connect dispose (`sdk-mcp-auto-discovery.test.ts` + `many-tools-mcp.ts` fixture), fast-path child rebuild on invalidate, and escaped-ref-def incremental-lex equivalence.
Deferred UI MCP discovery gated server-instruction inclusion on
`!deferMCPDiscoveryForUI`, so both `rebuildSystemPrompt` and the
`getMcpServerInstructions` signature callback omitted instructions for
the lifetime of every interactive session — even after background
discovery connected the servers. Server-provided instructions were
dropped permanently, contradicting the changelog's "next session" claim.
Both reads now depend only on `mcpManager.getServerInstructions()`,
which is empty before connect and populated after, so the post-discovery
`refreshMCPTools` rebuild folds them into the prompt. Corrects the
changelog and adds a home-isolated deferred end-to-end regression test
(stdio fixture server) that fails if the gate is reintroduced.
MCPManager.connectServers used to fall through to an unbounded
Promise.allSettled over every still-pending server without cached tools,
so a single MCP server stuck waiting on the per-request MCP timeout
(OMP_MCP_TIMEOUT_MS, default 30 000 ms) gated the entire UI ready
signal — exactly the 30.282 s stall the reporter observed against
sbox-superdocs in #2100.
Drop the fallback wait. Pending-without-cache servers are left in flight
and their tools surface via the existing background #onToolsChanged ->
refreshMCPTools path the moment the connect completes; failures continue
to log through the background catch handler (gated on
allowBackgroundLogging) so users still see which server failed.
Adds a regression test that spawns an unresponsive stdio MCP fixture
and asserts connectServers returns inside the 250 ms STARTUP_TIMEOUT_MS
window (padded for CI jitter). The same test times out at 15 s without
the patch.
Fixes#2100
A stdio MCP server that completes the initialize + tools/list handshake and then exits cleanly will fire `transport.onClose` on every clean exit, and the old `MCPManager.reconnectServer` path spawned again unconditionally. A misconfigured PHP-shebang MCP (e.g. Laravel Boost in a non-Laravel project) hit this loop and forked 66 487 `php84` processes parented directly to the agent's `bun` PID until macOS force-rebooted.
Add a per-server sliding-window circuit breaker: at most 5 reconnect attempts per 30 s window. The transport `onClose` callback and the per-tool-call retry in `tool-bridge` are subject to the breaker; `/mcp reconnect` passes `{ manual: true }` to reset the window so users can recover after fixing the underlying misconfiguration. Stale `onClose` is detached when the breaker trips so a late EOF event cannot re-arm the loop.
Defended by `mcp-reconnect-storm.test.ts`: a Bun stdio fixture answers the handshake and exits, then asserts the spawn count stays at ≤ 10 (was 127 without the fix).
Fixes#1592
- Added a unified eval framework with parser grammar, backend interfaces, and JS/Python execution result types.
- Added eval tool docs and updated prompts for fenced cells, `eval.py`/`eval.js`, and fallback behavior.
- Replaced the built-in `python` tool with `eval` across registry, rendering, interactive modes, and tool settings.
- Migrated Python execution runtime from `src/ipy` to `src/eval/py`, renamed state fields, and removed legacy introspection.
- Refactored browser tooling from in-process VM helpers to worker-managed tab supervisors and protocol transport.
- Added eval parser fallback and JS tool-bridge tests, updated imports, and removed obsolete python-mode suites.
- 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.
- Migrated all environment variable access from Node.js `process.env` to Bun runtime `Bun.env` API across the entire codebase.
- Updated 71 files including source code, tests, documentation, and configuration to use Bun's native environment variable API.
- Added comprehensive environment variables documentation in `packages/coding-agent/docs/environment-variables.md` covering 100+ environment variables organized by category.
- Updated CHANGELOG entries to reflect migration from `process.env` to `Bun.env` and environment variable prefix changes (PI_* vs OMP_*).
- Maintained identical behavior and logic across all changes - only the environment variable access method was updated.
- Port pi-ai from upstream with Bun-first approach (source files, no dist)
- Add cli_ prefix to tool names in OAuth mode to avoid collisions
- Improve beta header handling with proper deduplication
- Convert codex-instructions.md to Bun text embed
- Strip .js extensions from all imports
- Renamed npm package scope from @mariozechner to @oh-my-pi across all packages for consistent branding.
- Removed packages/pods directory and all related pod management functionality.
- Updated import paths and module declarations throughout codebase to reflect new package names.
- Reformatted code with consistent trailing comma removal and ternary operator alignment.
Implement Agent Skills standard (https://agentskills.io/specification):
- Validate name (must match parent dir, lowercase, max 64 chars)
- Validate description (required, max 1024 chars)
- Warn on unknown frontmatter fields
- Warn on name collisions (keep first)
- Change prompt format to XML structure
- Remove {baseDir} placeholder (use relative paths)
- Add tests and update documentation
fixes#231
- Add CompactionEntry type with firstKeptEntryIndex
- Add loadSessionFromEntries() for compaction-aware loading
- Add compact() function that returns CompactionEntry
- Add token calculation and cut point detection
- Add tests with real session fixture and LLM integration
Still TODO: settings, /compact and /autocompact commands, auto-trigger in TUI, /branch rework
jms830