fix(plugin-dev): add missing .claude-plugin/plugin.json manifest

The plugin-dev plugin is listed in .claude-plugin/marketplace.json but was the
only plugin in the plugins/ directory without a .claude-plugin/plugin.json
manifest, which is required for installation from the marketplace.

Adds the manifest with name, version, description, and author matching the
marketplace.json entry, consistent with all other plugins in this repo.

CHANGELOG.md

@@ -1,5 +1,45 @@
 # Changelog
 
+## 2.1.105
+
+- Added `path` parameter to the `EnterWorktree` tool to switch into an existing worktree of the current repository
+- Added PreCompact hook support: hooks can now block compaction by exiting with code 2 or returning `{"decision":"block"}`
+- Added background monitor support for plugins via a top-level `monitors` manifest key that auto-arms at session start or on skill invoke
+- `/proactive` is now an alias for `/loop`
+- Improved stalled API stream handling: streams now abort after 5 minutes of no data and retry non-streaming instead of hanging indefinitely
+- Improved network error messages: connection errors now show a retry message immediately instead of a silent spinner
+- Improved file write display: long single-line writes (e.g. minified JSON) are now truncated in the UI instead of paginating across many screens
+- Improved `/doctor` layout with status icons; press `f` to have Claude fix reported issues
+- Improved `/config` labels and descriptions for clarity
+- Improved skill description handling: raised the listing cap from 250 to 1,536 characters and added a startup warning when descriptions are truncated
+- Improved `WebFetch` to strip `<style>` and `<script>` contents from fetched pages so CSS-heavy pages no longer exhaust the content budget before reaching actual text
+- Improved stale agent worktree cleanup to remove worktrees whose PR was squash-merged instead of keeping them indefinitely
+- Improved MCP large-output truncation prompt to give format-specific recipes (e.g. `jq` for JSON, computed Read chunk sizes for text)
+- Fixed images attached to queued messages (sent while Claude is working) being dropped
+- Fixed screen going blank when the prompt input wraps to a second line in long conversations
+- Fixed leading whitespace getting copied when selecting multi-line assistant responses in fullscreen mode
+- Fixed leading whitespace being trimmed from assistant messages, breaking ASCII art and indented diagrams
+- Fixed garbled bash output when commands print clickable file links (e.g. Python `rich`/`loguru` logging)
+- Fixed alt+enter not inserting a newline in terminals using ESC-prefix alt encoding, and Ctrl+J not inserting a newline (regression in 2.1.100)
+- Fixed duplicate "Creating worktree" text in EnterWorktree/ExitWorktree tool display
+- Fixed queued user prompts disappearing from focus mode
+- Fixed one-shot scheduled tasks re-firing repeatedly when the file watcher missed the post-fire cleanup
+- Fixed inbound channel notifications being silently dropped after the first message for Team/Enterprise users
+- Fixed marketplace plugins with `package.json` and lockfile not having dependencies installed automatically after install/update
+- Fixed marketplace auto-update leaving the official marketplace in a broken state when a plugin process holds files open during the update
+- Fixed "Resume this session with..." hint not printing on exit after `/resume`, `--worktree`, or `/branch`
+- Fixed feedback survey shortcut keys firing when typed at the end of a longer prompt
+- Fixed stdio MCP server emitting malformed (non-JSON) output hanging the session instead of failing fast with "Connection closed"
+- Fixed MCP tools missing on the first turn of headless/remote-trigger sessions when MCP servers connect asynchronously
+- Fixed `/model` picker on AWS Bedrock in non-US regions persisting invalid `us.*` model IDs to `settings.json` when inference profile discovery is still in-flight
+- Fixed 429 rate-limit errors showing a raw JSON dump instead of a clean message for API-key, Bedrock, and Vertex users
+- Fixed crash on resume when session contains malformed text blocks
+- Fixed `/help` dropping the tab bar, Shortcuts heading, and footer at short terminal heights
+- Fixed malformed keybinding entry values in `keybindings.json` being silently loaded instead of rejected with a clear error
+- Fixed `CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC` in one project's settings permanently disabling usage metrics for all projects on the machine
+- Fixed washed-out 16-color palette when using Ghostty, Kitty, Alacritty, WezTerm, foot, rio, or Contour over SSH/mosh
+- Fixed Bash tool suggesting `acceptEdits` permission mode when exiting plan mode would downgrade from a higher permission level
+
 ## 2.1.101
 
 - Added `/team-onboarding` command to generate a teammate ramp-up guide from your local Claude Code usage

plugins/plugin-dev/.claude-plugin/plugin.json

@@ -0,0 +1,9 @@
+{
+  "name": "plugin-dev",
+  "version": "0.1.0",
+  "description": "Comprehensive toolkit for developing Claude Code plugins. Includes 7 expert skills covering hooks, MCP integration, commands, agents, and best practices. AI-assisted plugin creation and validation.",
+  "author": {
+    "name": "Daisy Hollman",
+    "email": "daisy@anthropic.com"
+  }
+}