feat(cursor): Add Windows PowerShell support for Cursor hooks

Complete Windows parity with bash scripts:
- Create 7 PowerShell scripts mirroring bash functionality
- Update installer to detect platform and install appropriate scripts
- Generate platform-specific hooks.json with PowerShell invocation
- Add enterprise support for Windows (ProgramData/Cursor)
- Update findCursorHooksDir to check for both .sh and .ps1
- Add comprehensive Windows documentation to STANDALONE-SETUP.md

Scripts added: common.ps1, session-init.ps1, context-inject.ps1,
save-observation.ps1, save-file-edit.ps1, session-summary.ps1, user-message.ps1

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cursor-hooks/session-summary.ps1

@@ -0,0 +1,108 @@
+# Session Summary Hook for Cursor (stop) - PowerShell
+# Called when agent loop ends
+#
+# This hook:
+# 1. Generates session summary
+# 2. Updates context file for next session
+#
+# Output: Empty JSON {} or {"followup_message": "..."} for auto-iteration
+
+$ErrorActionPreference = "SilentlyContinue"
+
+# Source common utilities
+$commonPath = Join-Path $PSScriptRoot "common.ps1"
+if (Test-Path $commonPath) {
+    . $commonPath
+} else {
+    Write-Output '{}'
+    exit 0
+}
+
+# Read JSON input from stdin with error handling
+$input = Read-JsonInput
+
+# Extract common fields with safe fallbacks
+$conversationId = Get-JsonField $input "conversation_id" ""
+$generationId = Get-JsonField $input "generation_id" ""
+$workspaceRoot = Get-JsonField $input "workspace_roots[0]" ""
+$status = Get-JsonField $input "status" "completed"
+
+# Fallback workspace to current directory
+if (Test-IsEmpty $workspaceRoot) {
+    $workspaceRoot = Get-Location
+}
+
+# Get project name
+$projectName = Get-ProjectName $workspaceRoot
+
+# Use conversation_id as session_id, fallback to generation_id
+$sessionId = $conversationId
+if (Test-IsEmpty $sessionId) {
+    $sessionId = $generationId
+}
+
+# Exit if no session_id available
+if (Test-IsEmpty $sessionId) {
+    Write-Output '{}'
+    exit 0
+}
+
+# Get worker port from settings with validation
+$workerPort = Get-WorkerPort
+
+# Ensure worker is running (with retries)
+if (-not (Test-WorkerReady -Port $workerPort)) {
+    Write-Output '{}'
+    exit 0
+}
+
+# 1. Request summary generation (fire-and-forget)
+# Note: Cursor doesn't provide transcript_path like Claude Code does,
+# so we can't extract last_user_message and last_assistant_message.
+$summaryPayload = @{
+    contentSessionId = $sessionId
+    last_user_message = ""
+    last_assistant_message = ""
+}
+
+$summaryUri = "http://127.0.0.1:$workerPort/api/sessions/summarize"
+Send-HttpPostAsync -Uri $summaryUri -Body $summaryPayload
+
+# 2. Update context file for next session
+# Fetch fresh context (includes observations from this session)
+$projectEncoded = Get-UrlEncodedString $projectName
+$contextUri = "http://127.0.0.1:$workerPort/api/context/inject?project=$projectEncoded"
+$context = Get-HttpResponse -Uri $contextUri
+
+if (-not [string]::IsNullOrEmpty($context)) {
+    $rulesDir = Join-Path $workspaceRoot ".cursor\rules"
+    $rulesFile = Join-Path $rulesDir "claude-mem-context.mdc"
+
+    # Create rules directory if it doesn't exist
+    if (-not (Test-Path $rulesDir)) {
+        New-Item -ItemType Directory -Path $rulesDir -Force | Out-Null
+    }
+
+    # Write context as a Cursor rule with alwaysApply: true
+    $ruleContent = @"
+---
+alwaysApply: true
+description: "Claude-mem context from past sessions (auto-updated)"
+---
+
+# Memory Context from Past Sessions
+
+The following context is from claude-mem, a persistent memory system that tracks your coding sessions.
+
+$context
+
+---
+*Updated after last session. Use claude-mem's MCP search tools for more detailed queries.*
+"@
+
+    Set-Content -Path $rulesFile -Value $ruleContent -Encoding UTF8 -Force
+}
+
+# Output empty JSON - no followup message
+Write-Output '{}'
+exit 0