- Added `X-Claude-Code-Session-Id` header to API requests so proxies can aggregate requests by session without parsing the body

- Added `.jj` and `.sl` to VCS directory exclusion lists so Grep and file autocomplete don't descend into Jujutsu or Sapling metadata

- Fixed `--resume` failing with "tool_use ids were found without tool_result blocks" on sessions created before v2.1.85

- Fixed Write/Edit/Read failing on files outside the project root (e.g., `~/.claude/CLAUDE.md`) when conditional skills or rules are configured

- Fixed unnecessary config disk writes on every skill invocation that could cause performance issues and config corruption on Windows

- Fixed potential out-of-memory crash when using `/feedback` on very long sessions with large transcript files

- Fixed `--bare` mode dropping MCP tools in interactive sessions and silently discarding messages enqueued mid-turn

- Fixed the `c` shortcut copying only ~20 characters of the OAuth login URL instead of the full URL

- Fixed masked input (e.g., OAuth code paste) leaking the start of the token when wrapping across multiple lines on narrow terminals

- Fixed official marketplace plugin scripts failing with "Permission denied" on macOS/Linux since v2.1.83

- Fixed statusline showing another session's model when running multiple Claude Code instances and using `/model` in one of them

- Fixed scroll not following new messages after wheel scroll or click-to-select at the bottom of a long conversation

- Fixed `/plugin` uninstall dialog: pressing `n` now correctly uninstalls the plugin while preserving its data directory

- Fixed a regression where pressing Enter after clicking could leave the transcript blank until the response arrived

- Fixed `ultrathink` hint lingering after deleting the keyword

- Fixed memory growth in long sessions from markdown/highlight render caches retaining full content strings

- Reduced startup event-loop stalls when many claude.ai MCP connectors are configured (macOS keychain cache extended from 5s to 30s)

- Reduced token overhead when mentioning files with `@` — raw string content no longer JSON-escaped

- Improved prompt cache hit rate for Bedrock, Vertex, and Foundry users by removing dynamic content from tool descriptions

- Memory filenames in the "Saved N memories" notice now highlight on hover and open on click

- Skill descriptions in the `/skills` listing are now capped at 250 characters to reduce context usage

- Changed `/skills` menu to sort alphabetically for easier scanning

- Auto mode now shows "unavailable for your plan" when disabled by plan restrictions (was "temporarily unavailable")

- [VSCode] Fixed extension incorrectly showing "Not responding" during long-running operations

- [VSCode] Fixed extension defaulting Max plan users to Sonnet after the OAuth token refreshes (8 hours after login)

- Read tool now uses compact line-number format and deduplicates unchanged re-reads, reducing token usage