backnotprop/plannotator v0.8.3

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What's New in v0.8.3

Plannotator now supports a third coding agent. Pi users get full plan review, code review, and markdown annotation — the same browser-based workflow available on Claude Code and OpenCode, adapted for Pi's extension API. This release also brings a configurable auto-close countdown and a security hardening fix for the image serving endpoint.

Pi Coding Agent Support

Plannotator's third platform integration. Pi is a coding agent by Mario Zechner that supports extensions via its plugin API, and Plannotator now ships a first-class extension for it.

The Pi extension introduces a file-based plan mode where the agent writes plans to a PLAN.md file on disk — git-trackable and visible in your editor at all times. When the agent calls exit_plan_mode, the browser-based review UI opens for you to annotate, approve, or deny the plan, just like on Claude Code and OpenCode.

What's included:

• Plan review with the full annotation UI — text selection, comments, deletions, replacements, image attachments
• Code review via /plannotator-review — opens git diffs in the review editor
• Markdown annotation via /plannotator-annotate <file.md> — annotate any markdown file
• Bash safety gating — during planning, the agent is restricted to read-only commands. Destructive operations like rm, mv, git push, and npm install are blocked until you approve the plan
• Progress tracking — a status line widget shows checklist completion as the agent executes (3/5), with live strikethrough on completed items
• State persistence — the current phase (idle, planning, executing) survives session restarts via Pi's entry API
• Ctrl+Alt+P keyboard shortcut and /plannotator command to toggle plan mode

The extension uses Node.js HTTP servers instead of Bun.serve(), since Pi loads extensions via jiti. Install from npm once published, or from git today:

pi install npm:@plannotator/pi-extension
pi --plan  # Start a session in plan mode

(#168)

Auto-Close Countdown

The auto-close behavior introduced in v0.8.0 now supports a configurable delay. Instead of a binary on/off toggle, you can choose from four options: Off (default), Immediately, After 3 seconds, or After 5 seconds. When a delay is set, the completion overlay shows a live countdown before the tab closes.

More importantly, the feature is now discoverable. When auto-close is off, the completion overlay surfaces an opt-in checkbox — right at the moment you'd benefit from it most. One click enables it with a 3-second default, and you can fine-tune the delay in Settings whenever you like.

The implementation also handles browser restrictions gracefully. Since window.close() only works on tabs opened by script (and Plannotator opens via OS commands), a failed close now shows a friendly fallback message instead of silently doing nothing.

Under the hood, the duplicated completion overlay code from both the plan editor and review editor has been extracted into a shared CompletionOverlay component with a useAutoClose hook, cleaning up both apps.

• Thanks to @flex-yj-kim for the contribution (#162)

Image Endpoint Security Fix

The /api/image endpoint in all three servers (plan, review, annotate) previously served files from the local filesystem based on a user-provided path query parameter with no validation. Since the HTTP server runs on localhost without authentication, any process or browser tab could read arbitrary files — including SSH keys, AWS credentials, and other sensitive data. The server's 4-day hook timeout made the exposure window particularly wide.

This is now locked down with a shared validation module applied across all three servers:

• Image extension allowlist — only known image formats are served (png, jpg, gif, webp, svg, and others)

• Path normalization — path.resolve() eliminates ../ traversal sequences

• Upload validation — the /api/upload endpoint now enforces the same allowlist

• Thanks to @dor-tzur-lmnd for identifying and fixing this vulnerability (#164)

Install / Update

macOS / Linux:

curl -fsSL https://plannotator.ai/install.sh | bash

Windows:

irm https://plannotator.ai/install.ps1 | iex

Claude Code Plugin: Run /plugin in Claude Code, find plannotator, and click "Update now".

OpenCode: Clear cache and restart:

rm -rf ~/.bun/install/cache/@plannotator

Then in opencode.json:

{
  "plugin": ["@plannotator/opencode@latest"]
}

Pi: Install or update the extension:

pi install npm:@plannotator/pi-extension

What's Changed

• fix(server): prevent arbitrary file read via /api/image endpoint by @dor-tzur-lmnd in #164
• feat: Add auto-close countdown delay to completion overlay by @flex-yj-kim in #162
• feat: add Pi coding agent extension by @backnotprop in #168

New Contributors

• @dor-tzur-lmnd made their first contribution in #164

Full Changelog: v0.8.2...v0.8.3