feat: add Pi origin support to code review UI (#263)

* feat: add Pi origin support to code review UI and update banner

Pi users were seeing "OpenCode" badge and getting the wrong update
command. Adds 'pi' to origin types in review/annotate servers, shows
violet "Pi" badge in code review header, and copies the correct
`pi install` command in the update banner.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: update Pi extension from install scripts when pi is available

The install scripts now check if `pi` is on PATH and run
`pi install npm:@plannotator/pi-extension` to update the extension.
Silent for users without Pi installed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/review-editor/App.tsx

@@ -35,7 +35,7 @@ interface DiffData {
   files: DiffFile[];
   rawPatch: string;
   gitRef: string;
-  origin?: 'opencode' | 'claude-code';
+  origin?: 'opencode' | 'claude-code' | 'pi';
   diffType?: string;
   gitContext?: GitContext;
   sharingEnabled?: boolean;
@@ -139,7 +139,7 @@ const ReviewApp: React.FC = () => {
   const [copyFeedback, setCopyFeedback] = useState<string | null>(null);
   const [viewedFiles, setViewedFiles] = useState<Set<string>>(new Set());
   const [hideViewedFiles, setHideViewedFiles] = useState(false);
-  const [origin, setOrigin] = useState<'opencode' | 'claude-code' | null>(null);
+  const [origin, setOrigin] = useState<'opencode' | 'claude-code' | 'pi' | null>(null);
   const [diffType, setDiffType] = useState<string>('uncommitted');
   const [gitContext, setGitContext] = useState<GitContext | null>(null);
   const [isLoadingDiff, setIsLoadingDiff] = useState(false);
@@ -214,7 +214,7 @@ const ReviewApp: React.FC = () => {
       .then((data: {
         rawPatch: string;
         gitRef: string;
-        origin?: 'opencode' | 'claude-code';
+        origin?: 'opencode' | 'claude-code' | 'pi';
         diffType?: string;
         gitContext?: GitContext;
         sharingEnabled?: boolean;
@@ -615,9 +615,11 @@ const ReviewApp: React.FC = () => {
               <span className={`text-[10px] px-1.5 py-0.5 rounded font-medium hidden md:inline ${
                 origin === 'claude-code'
                   ? 'bg-orange-500/15 text-orange-400'
-                  : 'bg-zinc-500/20 text-zinc-400'
+                  : origin === 'pi'
+                    ? 'bg-violet-500/15 text-violet-400'
+                    : 'bg-zinc-500/20 text-zinc-400'
               }`}>
-                {origin === 'claude-code' ? 'Claude Code' : 'OpenCode'}
+                {origin === 'claude-code' ? 'Claude Code' : origin === 'pi' ? 'Pi' : 'OpenCode'}
               </span>
             )}
             {repoInfo && (
@@ -991,10 +993,10 @@ const ReviewApp: React.FC = () => {
           title={submitted === 'approved' ? 'Changes Approved' : 'Feedback Sent'}
           subtitle={
             submitted === 'approved'
-              ? `${origin === 'claude-code' ? 'Claude Code' : 'OpenCode'} will proceed with the changes.`
+              ? `${origin === 'claude-code' ? 'Claude Code' : origin === 'pi' ? 'Pi' : 'OpenCode'} will proceed with the changes.`
-              : `${origin === 'claude-code' ? 'Claude Code' : 'OpenCode'} will address your review feedback.`
+              : `${origin === 'claude-code' ? 'Claude Code' : origin === 'pi' ? 'Pi' : 'OpenCode'} will address your review feedback.`
           }
-          agentLabel={origin === 'claude-code' ? 'Claude Code' : 'OpenCode'}
+          agentLabel={origin === 'claude-code' ? 'Claude Code' : origin === 'pi' ? 'Pi' : 'OpenCode'}
         />
 
         {/* Update notification */}

packages/server/annotate.ts

@@ -31,7 +31,7 @@ export interface AnnotateServerOptions {
   /** HTML content to serve for the UI */
   htmlContent: string;
   /** Origin identifier for UI customization */
-  origin?: "opencode" | "claude-code";
+  origin?: "opencode" | "claude-code" | "pi";
   /** Whether URL sharing is enabled (default: true) */
   sharingEnabled?: boolean;
   /** Custom base URL for share links */

packages/server/review.ts

@@ -34,7 +34,7 @@ export interface ReviewServerOptions {
   /** HTML content to serve for the UI */
   htmlContent: string;
   /** Origin identifier for UI customization */
-  origin?: "opencode" | "claude-code";
+  origin?: "opencode" | "claude-code" | "pi";
   /** Current diff type being displayed */
   diffType?: DiffType;
   /** Git context with branch info and available diff options */

packages/ui/components/UpdateBanner.tsx

@@ -1,7 +1,8 @@
 import React, { useState } from 'react';
 import { useUpdateCheck } from '../hooks/useUpdateCheck';
 
-const INSTALL_COMMAND = 'curl -fsSL https://plannotator.ai/install.sh | bash';
+const DEFAULT_INSTALL_COMMAND = 'curl -fsSL https://plannotator.ai/install.sh | bash';
+const PI_INSTALL_COMMAND = 'pi install npm:@plannotator/pi-extension';
 
 interface UpdateBannerProps {
   origin?: 'claude-code' | 'opencode' | 'pi' | null;
@@ -16,13 +17,15 @@ export const UpdateBanner: React.FC<UpdateBannerProps> = ({ origin }) => {
   const urlParams = new URLSearchParams(window.location.search);
   const previewOrigin = urlParams.get('preview-origin');
   const effectiveOrigin = previewOrigin || origin;
+  const isPi = effectiveOrigin === 'pi';
   const isOpenCode = effectiveOrigin === 'opencode';
+  const installCommand = isPi ? PI_INSTALL_COMMAND : DEFAULT_INSTALL_COMMAND;
 
   if (!updateInfo?.updateAvailable || dismissed) return null;
 
   const handleCopy = async () => {
     try {
-      await navigator.clipboard.writeText(INSTALL_COMMAND);
+      await navigator.clipboard.writeText(installCommand);
       setCopied(true);
       setTimeout(() => setCopied(false), 2000);
     } catch (e) {
@@ -76,12 +79,17 @@ export const UpdateBanner: React.FC<UpdateBannerProps> = ({ origin }) => {
               You have {updateInfo.currentVersion}
             </p>
 
-            {/* OpenCode extra instructions */}
+            {/* Agent-specific extra instructions */}
             {isOpenCode && (
               <p className="text-xs text-muted-foreground mt-3">
                 Run the install script, then restart OpenCode.
               </p>
             )}
+            {isPi && (
+              <p className="text-xs text-muted-foreground mt-3">
+                Run the install command, then restart Pi.
+              </p>
+            )}
 
             <div className="mt-4 flex items-center gap-2">
               <button

scripts/install.cmd

@@ -155,6 +155,14 @@ echo }
     echo Updated plugin hooks at !PLUGIN_HOOKS!
 )
 
+REM Update Pi extension if pi is installed
+where pi >nul 2>&1
+if !ERRORLEVEL! equ 0 (
+    echo Updating Pi extension...
+    pi install npm:@plannotator/pi-extension
+    echo Pi extension updated.
+)
+
 REM Install /review slash command
 if defined CLAUDE_CONFIG_DIR (
     set "CLAUDE_COMMANDS_DIR=%CLAUDE_CONFIG_DIR%\commands"

scripts/install.ps1

@@ -110,6 +110,13 @@ if (Test-Path $pluginHooks) {
 Remove-Item -Recurse -Force "$env:USERPROFILE\.cache\opencode\node_modules\@plannotator" -ErrorAction SilentlyContinue
 Remove-Item -Recurse -Force "$env:USERPROFILE\.bun\install\cache\@plannotator" -ErrorAction SilentlyContinue
 
+# Update Pi extension if pi is installed
+if (Get-Command pi -ErrorAction SilentlyContinue) {
+    Write-Host "Updating Pi extension..."
+    pi install npm:@plannotator/pi-extension
+    Write-Host "Pi extension updated."
+}
+
 # Install Claude Code slash command
 $claudeCommandsDir = if ($env:CLAUDE_CONFIG_DIR) { "$env:CLAUDE_CONFIG_DIR\commands" } else { "$env:USERPROFILE\.claude\commands" }
 New-Item -ItemType Directory -Force -Path $claudeCommandsDir | Out-Null

scripts/install.sh

@@ -110,6 +110,13 @@ fi
 # Clear any cached OpenCode plugin to force fresh download on next run
 rm -rf "$HOME/.cache/opencode/node_modules/@plannotator" "$HOME/.bun/install/cache/@plannotator" 2>/dev/null || true
 
+# Update Pi extension if pi is installed
+if command -v pi &>/dev/null; then
+    echo "Updating Pi extension..."
+    pi install npm:@plannotator/pi-extension
+    echo "Pi extension updated."
+fi
+
 # Install /review slash command
 CLAUDE_COMMANDS_DIR="${CLAUDE_CONFIG_DIR:-$HOME/.claude}/commands"
 mkdir -p "$CLAUDE_COMMANDS_DIR"