diff --git a/scripts/pulse-sensor-cleanup.sh b/scripts/pulse-sensor-cleanup.sh
index 3e780519a..1947b29c3 100755
--- a/scripts/pulse-sensor-cleanup.sh
+++ b/scripts/pulse-sensor-cleanup.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
-# pulse-sensor-cleanup.sh - Removes Pulse SSH keys from Proxmox nodes when they're removed from Pulse
+# pulse-sensor-cleanup.sh - Complete Pulse footprint removal when nodes are removed
+# Removes: SSH keys, proxy service, binaries, API tokens, and LXC bind mounts
 # This script is triggered by systemd path unit when cleanup-request.json is created
 
 set -euo pipefail
@@ -8,7 +9,9 @@ set -euo pipefail
 # Configuration
 WORK_DIR="/var/lib/pulse-sensor-proxy"
 CLEANUP_REQUEST="${WORK_DIR}/cleanup-request.json"
+LOCKFILE="${WORK_DIR}/cleanup.lock"
 LOG_TAG="pulse-sensor-cleanup"
+INSTALLER_PATH="/opt/pulse/sensor-proxy/install-sensor-proxy.sh"
 
 # Logging functions
 log_info() {
@@ -26,6 +29,13 @@ log_error() {
     echo "[ERROR] $1" >&2
 }
 
+# Acquire exclusive lock to prevent concurrent cleanup runs
+exec 200>"$LOCKFILE"
+if ! flock -n 200; then
+    log_info "Another cleanup instance is running, exiting"
+    exit 0
+fi
+
 # Check if cleanup request file exists
 if [[ ! -f "$CLEANUP_REQUEST" ]]; then
     log_info "No cleanup request found at $CLEANUP_REQUEST"
@@ -41,8 +51,12 @@ REQUESTED_AT=$(echo "$CLEANUP_DATA" | grep -o '"requestedAt":"[^"]*"' | cut -d'"
 
 log_info "Cleanup requested at: ${REQUESTED_AT:-unknown}"
 
-# Remove the cleanup request file immediately to prevent re-processing
-rm -f "$CLEANUP_REQUEST"
+# Rename request file to .processing to prevent re-triggering while allowing retry on failure
+PROCESSING_FILE="${CLEANUP_REQUEST}.processing"
+mv "$CLEANUP_REQUEST" "$PROCESSING_FILE" 2>/dev/null || {
+    log_warn "Failed to rename cleanup request file, may have been processed by another instance"
+    exit 0
+}
 
 # If no specific host was provided, clean up all known nodes
 if [[ -z "$HOST" ]]; then
@@ -50,7 +64,7 @@ if [[ -z "$HOST" ]]; then
 
     # Discover cluster nodes
     if command -v pvecm >/dev/null 2>&1; then
-        CLUSTER_NODES=$(pvecm status 2>/dev/null | awk '/0x[0-9a-f]+.*[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/ {for(i=1;i<=NF;i++) if($i ~ /^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/) print $i}')
+        CLUSTER_NODES=$(pvecm status 2>/dev/null | awk '/0x[0-9a-f]+.*[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/ {for(i=1;i<=NF;i++) if($i ~ /^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/) print $i}' || true)
 
         if [[ -n "$CLUSTER_NODES" ]]; then
             for node_ip in $CLUSTER_NODES; do
@@ -79,13 +93,16 @@ if [[ -z "$HOST" ]]; then
 else
     log_info "Cleaning up specific host: $HOST"
 
-    # Extract IP from host URL
+    # Extract hostname/IP from host URL
     HOST_CLEAN=$(echo "$HOST" | sed -e 's|^https\?://||' -e 's|:.*$||')
 
-    # Check if this is localhost
+    # Check if this is localhost (by IP, hostname, or FQDN)
     LOCAL_IPS=$(hostname -I 2>/dev/null || echo "")
+    LOCAL_HOSTNAME=$(hostname 2>/dev/null || echo "")
+    LOCAL_FQDN=$(hostname -f 2>/dev/null || echo "")
     IS_LOCAL=false
 
+    # Check against all local IPs
     for local_ip in $LOCAL_IPS; do
         if [[ "$HOST_CLEAN" == "$local_ip" ]]; then
             IS_LOCAL=true
@@ -93,15 +110,143 @@ else
         fi
     done
 
-    if [[ "$HOST_CLEAN" == "127.0.0.1" || "$HOST_CLEAN" == "localhost" ]]; then
+    # Check against hostname and FQDN
+    if [[ "$HOST_CLEAN" == "127.0.0.1" || "$HOST_CLEAN" == "localhost" || \
+          "$HOST_CLEAN" == "$LOCAL_HOSTNAME" || "$HOST_CLEAN" == "$LOCAL_FQDN" ]]; then
         IS_LOCAL=true
     fi
 
     if [[ "$IS_LOCAL" == true ]]; then
-        log_info "Cleaning up localhost SSH keys"
+        log_info "Performing full cleanup on localhost"
+
+        # 1. Remove SSH keys
+        log_info "Removing SSH keys from authorized_keys"
         sed -i -e '/# pulse-managed-key$/d' -e '/# pulse-proxy-key$/d' /root/.ssh/authorized_keys 2>&1 | \
             logger -t "$LOG_TAG" -p user.info || \
-            log_warn "Failed to clean up SSH keys on localhost"
+            log_warn "Failed to clean up SSH keys"
+
+        # 2. Delete API tokens and user
+        log_info "Removing Proxmox API tokens and pulse-monitor user"
+        if command -v pveum >/dev/null 2>&1; then
+            # Try JSON output first (pveum with --output-format json)
+            TOKEN_IDS=""
+            if command -v python3 >/dev/null 2>&1; then
+                # Try pveum with JSON output
+                if TOKEN_JSON=$(pveum user token list pulse-monitor@pam --output-format json 2>/dev/null); then
+                    TOKEN_IDS=$(echo "$TOKEN_JSON" | python3 -c '
+import sys, json
+try:
+    data = json.load(sys.stdin)
+    if isinstance(data, list):
+        for item in data:
+            if "tokenid" in item:
+                print(item["tokenid"])
+except: pass
+' || true)
+                fi
+            fi
+
+            # Fall back to pvesh JSON API if pveum JSON didn't work
+            if [[ -z "$TOKEN_IDS" ]] && command -v pvesh >/dev/null 2>&1; then
+                if TOKEN_JSON=$(pvesh get /access/users/pulse-monitor@pam/token 2>/dev/null); then
+                    TOKEN_IDS=$(echo "$TOKEN_JSON" | python3 -c '
+import sys, json
+try:
+    data = json.load(sys.stdin)
+    if isinstance(data, dict) and "data" in data:
+        for item in data["data"]:
+            if "tokenid" in item:
+                print(item["tokenid"])
+except: pass
+' 2>/dev/null || true)
+                fi
+            fi
+
+            # Last resort: parse table output with better filtering
+            if [[ -z "$TOKEN_IDS" ]]; then
+                TOKEN_IDS=$(pveum user token list pulse-monitor@pam 2>/dev/null | \
+                    awk 'NR>1 && /^[[:space:]]*pulse/ {print $1}' | grep -v '^[│┌└╞─]' | grep -v '^$' || true)
+            fi
+
+            if [[ -n "$TOKEN_IDS" ]]; then
+                for token_id in $TOKEN_IDS; do
+                    log_info "Deleting API token: $token_id"
+                    pveum user token remove pulse-monitor@pam "${token_id}" 2>&1 | \
+                        logger -t "$LOG_TAG" -p user.info || \
+                        log_warn "Failed to delete token $token_id"
+                done
+            else
+                log_info "No API tokens found for pulse-monitor@pam"
+            fi
+
+            # Remove the pulse-monitor user
+            log_info "Removing pulse-monitor@pam user"
+            pveum user delete pulse-monitor@pam 2>&1 | \
+                logger -t "$LOG_TAG" -p user.info || \
+                log_warn "pulse-monitor@pam user not found or already removed"
+        else
+            log_warn "pveum command not available, skipping API token cleanup"
+        fi
+
+        # 3. Remove LXC bind mounts
+        log_info "Removing LXC bind mounts from container configs"
+        if command -v pct >/dev/null 2>&1; then
+            for ctid in $(pct list 2>/dev/null | awk 'NR>1 {print $1}' || true); do
+                CONF_FILE="/etc/pve/lxc/${ctid}.conf"
+                if [[ -f "$CONF_FILE" ]]; then
+                    # Find pulse-sensor-proxy mount points and remove them using pct
+                    for mp_key in $(grep -o "^mp[0-9]\+:" "$CONF_FILE" | grep -f <(grep "pulse-sensor-proxy" "$CONF_FILE" | grep -o "^mp[0-9]\+:") || true); do
+                        mp_num="${mp_key%:}"
+                        log_info "Removing ${mp_num} (pulse-sensor-proxy) from container $ctid"
+                        if pct set "$ctid" -delete "${mp_num}" 2>&1 | logger -t "$LOG_TAG" -p user.info; then
+                            log_info "Successfully removed ${mp_num} from container $ctid"
+                        else
+                            log_warn "Failed to remove ${mp_num} from container $ctid"
+                        fi
+                    done
+                fi
+            done
+        fi
+
+        # 4. Uninstall proxy service and remove binaries via isolated transient unit
+        log_info "Starting full uninstallation (service, binaries, configs)"
+        if [[ -x "$INSTALLER_PATH" ]]; then
+            # Use systemd-run to create isolated transient unit that won't be killed
+            # when we stop pulse-sensor-proxy.service
+            if command -v systemd-run >/dev/null 2>&1; then
+                # Use UUID for unique unit name (prevents same-second collisions)
+                UNINSTALL_UUID=$(cat /proc/sys/kernel/random/uuid 2>/dev/null || date +%s%N)
+                UNINSTALL_UNIT="pulse-uninstall-${UNINSTALL_UUID}"
+                log_info "Spawning isolated uninstaller unit: $UNINSTALL_UNIT"
+
+                systemd-run \
+                    --unit="${UNINSTALL_UNIT}" \
+                    --property="Type=oneshot" \
+                    --property="Conflicts=pulse-sensor-proxy.service" \
+                    --collect \
+                    --wait \
+                    --quiet \
+                    -- bash -c "$INSTALLER_PATH --uninstall --purge --quiet >> /var/log/pulse/sensor-proxy/uninstall.log 2>&1" \
+                    2>&1 | logger -t "$LOG_TAG" -p user.info
+
+                UNINSTALL_EXIT=$?
+                if [[ $UNINSTALL_EXIT -eq 0 ]]; then
+                    log_info "Uninstaller completed successfully"
+                else
+                    log_error "Uninstaller failed with exit code $UNINSTALL_EXIT"
+                    exit 1
+                fi
+            else
+                log_warn "systemd-run not available, attempting direct uninstall (may fail)"
+                bash "$INSTALLER_PATH" --uninstall --quiet >> /var/log/pulse/sensor-proxy/uninstall.log 2>&1 || \
+                    log_error "Uninstaller failed - manual cleanup may be required"
+            fi
+        else
+            log_warn "Installer not found at $INSTALLER_PATH, cannot run uninstaller"
+            log_info "Manual cleanup required: systemctl stop pulse-sensor-proxy && systemctl disable pulse-sensor-proxy"
+        fi
+
+        log_info "Localhost cleanup initiated (uninstaller running in background)"
     else
         log_info "Cleaning up remote host: $HOST_CLEAN"
 
@@ -134,56 +279,8 @@ else
     fi
 fi
 
-# Full cleanup: uninstall proxy service, remove bind mounts, delete API tokens
-log_info "Starting full cleanup: uninstalling proxy service and removing remaining artifacts"
+# Remove processing file on success
+rm -f "$PROCESSING_FILE"
 
-# 1. Run the proxy uninstaller if available
-INSTALLER_PATH="/usr/local/share/pulse/install-sensor-proxy.sh"
-if [[ -x "$INSTALLER_PATH" ]]; then
-    log_info "Running proxy uninstaller to remove service and bind mounts"
-    if "$INSTALLER_PATH" --uninstall --quiet; then
-        log_info "Proxy service uninstalled successfully"
-    else
-        log_warn "Proxy uninstaller reported errors (may already be removed)"
-    fi
-else
-    log_warn "Proxy uninstaller not found at $INSTALLER_PATH - manual cleanup may be required"
-fi
-
-# 2. Delete Proxmox API tokens
-log_info "Removing Proxmox API tokens for pulse-monitor user"
-
-# Find all API tokens for pulse-monitor user
-if command -v pveum >/dev/null 2>&1; then
-    # List tokens for pulse-monitor user
-    TOKENS=$(pveum user token list pulse-monitor@pam 2>/dev/null | awk 'NR>1 {print $1}' || echo "")
-
-    if [[ -n "$TOKENS" ]]; then
-        for token_id in $TOKENS; do
-            log_info "Removing API token: pulse-monitor@pam!${token_id}"
-            if pveum user token remove pulse-monitor@pam "${token_id}" 2>/dev/null; then
-                log_info "Successfully removed token: ${token_id}"
-            else
-                log_warn "Failed to remove token: ${token_id}"
-            fi
-        done
-    else
-        log_info "No API tokens found for pulse-monitor@pam user"
-    fi
-
-    # Remove the pulse-monitor user entirely
-    if pveum user list 2>/dev/null | grep -q "pulse-monitor@pam"; then
-        log_info "Removing pulse-monitor@pam user"
-        if pveum user delete pulse-monitor@pam 2>/dev/null; then
-            log_info "Successfully removed pulse-monitor@pam user"
-        else
-            log_warn "Failed to remove pulse-monitor@pam user"
-        fi
-    fi
-else
-    log_warn "pveum command not available - cannot remove API tokens automatically"
-    log_info "Manual cleanup: pveum user delete pulse-monitor@pam"
-fi
-
-log_info "Full cleanup completed successfully"
+log_info "Cleanup completed successfully"
 exit 0
diff --git a/scripts/trigger-release.sh b/scripts/trigger-release.sh
index 332280a31..a656292d2 100755
--- a/scripts/trigger-release.sh
+++ b/scripts/trigger-release.sh
@@ -100,18 +100,46 @@ if [ -f "$NOTES_FILE" ]; then
     echo "Release notes file ignored"
     NOTES_FILE=""
   fi
+else
 else
   echo "No release notes file found at ${NOTES_FILE}"
   echo ""
-  echo "Create release notes manually or let the workflow prompt you."
+  read -p "Generate release notes automatically? [Y/n] " -n 1 -r
   echo ""
-  read -p "Continue without release notes file? [y/N] " -n 1 -r
-  echo ""
-  if [[ ! $REPLY =~ ^[Yy]$ ]]; then
-    echo "Aborted"
-    exit 1
+  if [[ ! $REPLY =~ ^[Nn]$ ]]; then
+      echo "Generating release notes..."
+      # Try to find previous tag for better context
+      PREV_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
+      
+      if ./scripts/generate-release-notes.sh "$VERSION" "$PREV_TAG" > "$NOTES_FILE"; then
+          echo "Release notes generated at ${NOTES_FILE}"
+          echo ""
+          # Show first few lines
+          head -n 20 "$NOTES_FILE"
+          echo "... (truncated)"
+          echo ""
+          read -p "Use these release notes? [Y/n] " -n 1 -r
+          echo ""
+          if [[ $REPLY =~ ^[Nn]$ ]]; then
+              echo "Release notes rejected."
+              rm "$NOTES_FILE"
+              NOTES_FILE=""
+          fi
+      else
+          echo "Failed to generate release notes."
+          NOTES_FILE=""
+      fi
+  else
+      NOTES_FILE=""
   fi
-  NOTES_FILE=""
+fi
+
+if [ -z "$NOTES_FILE" ]; then
+    echo "❌ Error: Release notes are required"
+    echo ""
+    echo "Create ${NOTES_FILE} manually, then run this script again."
+    echo ""
+    exit 1
 fi
 
 # Trigger the workflow
@@ -122,11 +150,8 @@ if [ -n "$NOTES_FILE" ]; then
     -f version="${VERSION}" \
     -f release_notes="$(cat "$NOTES_FILE")"
 else
-  echo ""
+  # This should be unreachable due to check above, but kept for safety
   echo "❌ Error: Release notes are required"
-  echo ""
-  echo "Create ${NOTES_FILE} with your release notes, then run this script again."
-  echo ""
   exit 1
 fi
 
diff --git a/tests/integration/IMPLEMENTATION_SUMMARY.md b/tests/integration/IMPLEMENTATION_SUMMARY.md
deleted file mode 100644
index d20048373..000000000
--- a/tests/integration/IMPLEMENTATION_SUMMARY.md
+++ /dev/null
@@ -1,359 +0,0 @@
-# Update Integration Tests - Implementation Summary
-
-## Overview
-
-This implementation provides a comprehensive end-to-end testing framework for the Pulse update flow, validating the entire path from UI to backend with controllable test scenarios.
-
-## What Was Built
-
-### 1. Test Harness Infrastructure
-
-#### Mock GitHub Release Server (`mock-github-server/`)
-- **Language**: Go
-- **Features**:
-  - Simulates GitHub Releases API
-  - Generates realistic release tarballs with checksums
-  - Controllable failure modes via environment variables
-  - Rate limiting simulation
-  - Stale release detection
-  - Network error simulation
-
-#### Docker Compose Test Environment (`docker-compose.test.yml`)
-- **Services**:
-  - `pulse-test`: Pulse server configured for testing
-  - `mock-github`: Mock GitHub API server
-- **Features**:
-  - Isolated network for testing
-  - Health checks for both services
-  - Environment-based configuration for different test scenarios
-  - Automatic cleanup after tests
-
-### 2. Playwright Test Suite
-
-#### Test Infrastructure
-- **Framework**: Playwright with TypeScript
-- **Configuration**: `playwright.config.ts`
-- **Helpers**: `tests/helpers.ts` with reusable test utilities
-- **Browser**: Chromium (headless in CI)
-
-#### Test Scenarios Implemented
-
-##### 01. Happy Path (`01-happy-path.spec.ts`)
-- ✅ Display update banner when update is available
-- ✅ Show confirmation modal with version details
-- ✅ Show progress modal during update
-- ✅ Progress modal appears exactly once (no duplicates)
-- ✅ Display different stages (downloading, verifying, extracting, etc.)
-- ✅ Verify checksum during update
-- ✅ Complete end-to-end update flow
-- ✅ Include release notes in update banner
-
-**Tests**: 8 test cases
-
-##### 02. Bad Checksums (`02-bad-checksums.spec.ts`)
-- ✅ Display error when checksum validation fails
-- ✅ Show error modal EXACTLY ONCE (not twice) ⭐ **Critical for v4.28.0 issue**
-- ✅ Display user-friendly error message
-- ✅ Allow dismissing error modal
-- ✅ No raw API error responses shown
-- ✅ Prevent retry with same bad checksum
-- ✅ Maintain single modal through state changes
-- ✅ Show specific checksum error details
-
-**Tests**: 8 test cases
-**Key Feature**: Catches the v4.28.0 duplicate error modal issue
-
-##### 03. Rate Limiting (`03-rate-limiting.spec.ts`)
-- ✅ Rate limit excessive update check requests
-- ✅ Include rate limit headers in response
-- ✅ Include Retry-After header when rate limited
-- ✅ Allow requests after rate limit window expires
-- ✅ Rate limit per IP address independently
-- ✅ Provide clear error message when rate limited
-- ✅ Don't rate limit reasonable request patterns
-- ✅ Rate limit apply update endpoint separately
-- ✅ Decrement rate limit counter appropriately
-
-**Tests**: 9 test cases
-
-##### 04. Network Failure (`04-network-failure.spec.ts`)
-- ✅ Retry failed update check requests
-- ✅ Use exponential backoff for retries
-- ✅ Show loading state during retry
-- ✅ Eventually succeed after transient failures
-- ✅ Don't retry indefinitely
-- ✅ Show error after max retries exceeded
-- ✅ Handle timeout during download
-- ✅ Use exponential backoff with maximum cap
-- ✅ Preserve user context during retries
-- ✅ Handle partial download failures gracefully
-
-**Tests**: 10 test cases
-
-##### 05. Stale Release (`05-stale-release.spec.ts`)
-- ✅ Reject stale release during download
-- ✅ Detect stale release before extraction
-- ✅ Provide informative message about rejection
-- ✅ Don't create backup for stale release
-- ✅ Reject stale release even with valid checksum
-- ✅ Log stale release rejection attempt
-- ✅ Handle X-Release-Status header from server
-- ✅ Allow checking for other updates after rejection
-- ✅ Differentiate stale release error from other errors
-- ✅ Prevent installation of specific flagged version
-
-**Tests**: 10 test cases
-
-##### 06. Frontend Validation (`06-frontend-validation.spec.ts`)
-- ✅ UpdateProgressModal appears exactly once during update ⭐
-- ✅ No duplicate modals during state transitions ⭐
-- ✅ Error modal appears exactly once on checksum failure ⭐
-- ✅ Error messages are user-friendly (not raw API errors) ⭐
-- ✅ Modal can be dismissed after error ⭐
-- ✅ Modal has accessible close button
-- ✅ ESC key dismisses modal after error
-- ✅ Error message doesn't contain stack traces
-- ✅ Error message doesn't contain internal API paths
-- ✅ Error message is concise and actionable
-- ✅ Modal has proper ARIA attributes for accessibility
-- ✅ Progress bar has proper ARIA attributes
-- ✅ Modal backdrop prevents interaction with background
-- ✅ Modal maintains focus trap during update
-- ✅ No console errors during update flow
-
-**Tests**: 15 test cases
-**Key Feature**: Comprehensive UX validation to prevent regressions
-
-### 3. CI/CD Integration
-
-#### GitHub Actions Workflow (`.github/workflows/test-updates.yml`)
-- **Triggers**:
-  - Pull requests touching update-related code
-  - Pushes to main/master
-  - Manual workflow dispatch
-- **Jobs**:
-  - `integration-tests`: Runs all test suites with different configurations
-  - `regression-test`: Verifies tests catch v4.28.0-style checksum issues
-- **Features**:
-  - Runs each test suite with appropriate mock configuration
-  - Uploads test reports and failure artifacts
-  - Comments on PR when tests fail
-  - Parallel test execution where possible
-  - Automatic cleanup of Docker resources
-
-### 4. Helper Scripts
-
-#### Setup Script (`scripts/setup.sh`)
-- Checks prerequisites (Docker, Node.js, Go)
-- Installs npm dependencies
-- Installs Playwright browsers
-- Builds Docker images
-- Provides clear setup instructions
-
-#### Test Runner (`scripts/run-tests.sh`)
-- Run all tests or specific test suite
-- Manages Docker environment per test
-- Provides colored output for test results
-- Handles cleanup after tests
-- Reports summary of passed/failed tests
-
-### 5. Documentation
-
-#### Main README (`README.md`)
-- Architecture overview
-- Test scenario descriptions
-- Running instructions
-- Success criteria
-
-#### Quick Start Guide (`QUICK_START.md`)
-- Prerequisites
-- One-time setup
-- Running tests (all patterns)
-- Troubleshooting guide
-- Architecture diagram
-
-#### Implementation Summary (this document)
-- Complete overview of what was built
-- Test coverage statistics
-- Success criteria verification
-
-## Test Coverage Statistics
-
-- **Total Test Files**: 6
-- **Total Test Cases**: 60+
-- **Test Scenarios**: 5 major scenarios + frontend validation
-- **Lines of Test Code**: ~2,500+
-- **Mock Server Code**: ~300 lines
-- **Helper Functions**: 20+
-
-## Success Criteria Verification
-
-### ✅ Tests run in CI on every PR touching update code
-**Status**: Implemented in `.github/workflows/test-updates.yml`
-- Triggers on update-related file changes
-- Runs automatically on PRs and pushes
-
-### ✅ All scenarios pass reliably
-**Status**: Test suite designed for reliability
-- Each test suite runs in isolated Docker environment
-- Services have health checks
-- Proper wait times and timeouts
-- Cleanup after each test
-
-### ✅ Tests catch the v4.28.0 checksum issue type automatically
-**Status**: Specific test coverage implemented
-- Test suite `02-bad-checksums.spec.ts` specifically validates:
-  - Error appears exactly once (not twice)
-  - No duplicate modals
-  - User-friendly error messages
-- Regression test job verifies this works
-
-### ✅ Frontend UX regressions are blocked
-**Status**: Comprehensive frontend validation suite
-- Test suite `06-frontend-validation.spec.ts` with 15 test cases
-- Validates modal behavior, error messages, accessibility
-- Ensures no duplicate modals in any scenario
-- Checks for user-friendly error messages
-- Validates proper ARIA attributes
-
-## Key Features
-
-### 1. Controllable Test Environment
-Environment variables control mock server behavior:
-```bash
-MOCK_CHECKSUM_ERROR=true    # Return invalid checksums
-MOCK_NETWORK_ERROR=true     # Simulate network failures
-MOCK_RATE_LIMIT=true        # Enable aggressive rate limiting
-MOCK_STALE_RELEASE=true     # Mark releases as stale
-```
-
-### 2. Realistic Mock GitHub Server
-- Generates actual tarball files with checksums
-- Simulates GitHub API responses accurately
-- Provides controllable failure modes
-- Includes rate limiting
-- Supports multiple release versions
-
-### 3. Comprehensive Helper Library
-20+ helper functions including:
-- `loginAsAdmin()`, `navigateToSettings()`
-- `waitForUpdateBanner()`, `clickApplyUpdate()`
-- `waitForProgressModal()`, `countVisibleModals()`
-- `assertUserFriendlyError()`, `dismissModal()`
-- API helpers for direct backend testing
-
-### 4. CI-Ready
-- Runs in GitHub Actions
-- Produces test reports and artifacts
-- Comments on PRs with results
-- Verifies regression prevention
-
-## File Structure
-
-```
-tests/integration/
-├── README.md                           # Main documentation
-├── QUICK_START.md                      # Quick start guide
-├── IMPLEMENTATION_SUMMARY.md           # This file
-├── package.json                        # npm dependencies
-├── playwright.config.ts                # Playwright configuration
-├── tsconfig.json                       # TypeScript configuration
-├── docker-compose.test.yml             # Test environment
-├── .gitignore                          # Git ignore rules
-│
-├── mock-github-server/                 # Mock GitHub API
-│   ├── main.go                         # Server implementation
-│   ├── go.mod                          # Go dependencies
-│   └── Dockerfile                      # Container image
-│
-├── scripts/                            # Helper scripts
-│   ├── setup.sh                        # One-time setup
-│   └── run-tests.sh                    # Test runner
-│
-└── tests/                              # Test suites
-    ├── helpers.ts                      # Test utilities
-    ├── 01-happy-path.spec.ts           # Happy path tests
-    ├── 02-bad-checksums.spec.ts        # Checksum validation tests
-    ├── 03-rate-limiting.spec.ts        # Rate limit tests
-    ├── 04-network-failure.spec.ts      # Network failure tests
-    ├── 05-stale-release.spec.ts        # Stale release tests
-    └── 06-frontend-validation.spec.ts  # Frontend UX tests
-```
-
-## Running the Tests
-
-### Quick Start
-```bash
-cd tests/integration
-./scripts/setup.sh    # One-time setup
-npm test              # Run all tests
-```
-
-### Specific Scenarios
-```bash
-./scripts/run-tests.sh happy          # Happy path only
-./scripts/run-tests.sh checksums      # Bad checksums
-./scripts/run-tests.sh rate-limit     # Rate limiting
-./scripts/run-tests.sh network        # Network failures
-./scripts/run-tests.sh stale          # Stale releases
-./scripts/run-tests.sh frontend       # Frontend validation
-```
-
-### Interactive Mode
-```bash
-npm run test:ui       # Playwright UI
-npm run test:debug    # Debug mode
-npm run test:headed   # Headed browser
-```
-
-## Technologies Used
-
-- **Test Framework**: Playwright
-- **Language**: TypeScript
-- **Mock Server**: Go
-- **Container Platform**: Docker & Docker Compose
-- **CI/CD**: GitHub Actions
-- **Browser**: Chromium
-
-## Future Enhancements
-
-Potential improvements for future iterations:
-
-1. **Additional Test Scenarios**
-   - Multi-version update paths
-   - Rollback scenarios
-   - Concurrent update attempts
-   - Permission failures
-
-2. **Performance Testing**
-   - Update download speed
-   - UI responsiveness during update
-   - Backend processing time
-
-3. **Cross-browser Testing**
-   - Firefox support
-   - Safari/WebKit support
-
-4. **Test Data Variations**
-   - Different release sizes
-   - Various network speeds
-   - Different update channels (stable vs RC)
-
-5. **Monitoring Integration**
-   - Test metrics dashboard
-   - Failure trend analysis
-   - Performance benchmarks
-
-## Conclusion
-
-This implementation provides a robust, comprehensive testing framework for the Pulse update flow that:
-
-✅ Catches critical issues like the v4.28.0 duplicate modal bug
-✅ Validates frontend UX to prevent regressions
-✅ Tests backend logic thoroughly
-✅ Runs automatically in CI
-✅ Is easy to run locally
-✅ Is well-documented
-✅ Is maintainable and extensible
-
-The test suite meets all success criteria and provides confidence that update flow changes won't introduce regressions.