Docs: add nav titles across docs (#5689)

docs/automation/auth-monitoring.md

@@ -3,6 +3,7 @@ summary: "Monitor OAuth expiry for model providers"
 read_when:
   - Setting up auth expiry monitoring or alerts
   - Automating Claude Code / Codex OAuth refresh checks
+title: "Auth Monitoring"
 ---
 
 # Auth monitoring

docs/automation/cron-jobs.md

@@ -4,6 +4,7 @@ read_when:
   - Scheduling background jobs or wakeups
   - Wiring automation that should run with or alongside heartbeats
   - Deciding between heartbeat and cron for scheduled tasks
+title: "Cron Jobs"
 ---
 
 # Cron jobs (Gateway scheduler)

docs/automation/cron-vs-heartbeat.md

@@ -4,6 +4,7 @@ read_when:
   - Deciding how to schedule recurring tasks
   - Setting up background monitoring or notifications
   - Optimizing token usage for periodic checks
+title: "Cron vs Heartbeat"
 ---
 
 # Cron vs Heartbeat: When to Use Each

docs/automation/gmail-pubsub.md

@@ -3,6 +3,7 @@ summary: "Gmail Pub/Sub push wired into OpenClaw webhooks via gogcli"
 read_when:
   - Wiring Gmail inbox triggers to OpenClaw
   - Setting up Pub/Sub push for agent wake
+title: "Gmail PubSub"
 ---
 
 # Gmail Pub/Sub -> OpenClaw

docs/automation/poll.md

@@ -3,6 +3,7 @@ summary: "Poll sending via gateway + CLI"
 read_when:
   - Adding or modifying poll support
   - Debugging poll sends from the CLI or gateway
+title: "Polls"
 ---
 
 # Polls

docs/automation/webhook.md

@@ -3,6 +3,7 @@ summary: "Webhook ingress for wake and isolated agent runs"
 read_when:
   - Adding or changing webhook endpoints
   - Wiring external systems into OpenClaw
+title: "Webhooks"
 ---
 
 # Webhooks