feat: add auto oauth and MCP tool filtering

fix: stabilize oauth callback server lifecycle

fix: handle oauth callback port conflicts

docs: credit pr nicobailon#27 in changelog

Credit @HazAT in the 2.3.3 changelog entry before publishing the release.

fix: add compact client credentials oauth support

Add a minimal client_credentials path for HTTP MCP OAuth, update docs, and fix related auth-flow resource cleanup and status handling.

fix: remove /mcp-auth-callback command

This drops the compatibility command entirely and hard-cuts OAuth auth flows to `/mcp-auth <server>` only. It also records the change in the changelog and bumps package metadata for v2.3.1.

chore: release v2.3.0

Cut the 2.3.0 release for the OAuth SDK implementation and follow-up blocking fixes. This bumps the package metadata, records the release in CHANGELOG.md, and keeps main ready for tagging/publish.

fix: harden session lifecycle and error handling

This update makes session teardown and startup resilient to repeated session transitions by guarding against stale async initialization state, preserving shutdown semantics, and improving initialization error surfacing in proxy and direct tool paths. It also adds focused lifecycle regression coverage and ships the 2.2.2 changelog/version bump.

fix: add promptSnippet so MCP tools appear in system prompt

Required since pi 0.59.0. Direct tool snippets truncated to 100 chars.

chore: release v2.2.0 — MCP UI, session reuse, Glimpse