diff --git a/systemd/obs-index-sync.service b/systemd/obs-index-sync.service
new file mode 100644
index 0000000..1c7703a
--- /dev/null
+++ b/systemd/obs-index-sync.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=Observabilidade — indexer sessões + sync EasyPanel
+After=network-online.target
+
+[Service]
+Type=oneshot
+ExecStart=/home/ealmeida/.local/bin/obs-index-sync.sh
+Environment="PATH=/home/ealmeida/.nvm/versions/node/v22.22.2/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+StandardOutput=append:/home/ealmeida/.logs/observability/indexer.log
+StandardError=append:/home/ealmeida/.logs/observability/indexer.log
diff --git a/systemd/obs-index-sync.sh b/systemd/obs-index-sync.sh
new file mode 100644
index 0000000..fc7617b
--- /dev/null
+++ b/systemd/obs-index-sync.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+# obs-index-sync.sh — indexa sessões Claude/Hermes/OpenCode e sincroniza sessions.db para o volume EasyPanel.
+# CANÓNICO: este ficheiro vive NO REPO (systemd/obs-index-sync.sh) e é instalado por systemd/install-indexer.sh.
+# Lição 05-2026: a cópia única em ~/.local/bin perdeu-se e ninguém deu conta durante semanas (F0.5 Pipeline QT #2401).
+set -uo pipefail
+DASH_DIR="/media/ealmeida/Dados/Dev/DashDescomplicar"
+DB_LOCAL="$HOME/.claude-work/sessions.db"
+REMOTE_HOST="root@5.9.90.70"
+REMOTE_PATH="/root/data/dashboard-descomplicar/sessions.db"
+LOG="$HOME/.logs/observability/indexer.log"
+NODE="/home/ealmeida/.nvm/versions/node/v22.22.2/bin/node"
+NPX="/home/ealmeida/.nvm/versions/node/v22.22.2/bin/npx"
+mkdir -p "$(dirname "$LOG")"
+echo "[$(date -Iseconds)] Inicio" >> "$LOG"
+# Indexar
+cd "$DASH_DIR"
+OBSERVABILIDADE_DB="$DB_LOCAL" "$NPX" tsx api/scripts/sessions-indexer.ts --full >> "$LOG" 2>&1 || true
+# Checkpoint DB e forcar journal_mode=DELETE para evitar WAL inconsistente
+python3 -c "
+import sqlite3, os
+path = os.path.expanduser(\"$DB_LOCAL\")
+db = sqlite3.connect(path)
+db.execute(\"PRAGMA wal_checkpoint(TRUNCATE)\")
+db.execute(\"PRAGMA journal_mode=DELETE\")
+db.close()
+" 2>/dev/null || true
+# Sincronizar para EasyPanel
+rsync -az --checksum "$DB_LOCAL" "$REMOTE_HOST:$REMOTE_PATH" >> "$LOG" 2>&1
+# Limpar WAL/SHM no host EasyPanel e reiniciar servico Swarm
+ssh "$REMOTE_HOST" "rm -f /root/data/dashboard-descomplicar/sessions.db-shm /root/data/dashboard-descomplicar/sessions.db-wal && docker service update --detach=true --force descomplicar_dashboard_descomplicar 1>/dev/null 2>&1" >> "$LOG" 2>&1 || true
+echo "[$(date -Iseconds)] Concluido - $(du -sh "$DB_LOCAL" | cut -f1)" >> "$LOG"
diff --git a/systemd/obs-index-sync.timer b/systemd/obs-index-sync.timer
new file mode 100644
index 0000000..8c4bff0
--- /dev/null
+++ b/systemd/obs-index-sync.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=Observabilidade — timer 15min
+
+[Timer]
+# OnCalendar absoluto: imune a daemon-reload (ver nota em monitor-alerts.timer).
+OnCalendar=*:0/15
+Persistent=true
+
+[Install]
+WantedBy=timers.target
diff --git a/systemd/observabilidade-indexer.service b/systemd/observabilidade-indexer.service
index 53f3b3a..9b5c93a 100644
--- a/systemd/observabilidade-indexer.service
+++ b/systemd/observabilidade-indexer.service
@@ -5,7 +5,8 @@ After=default.target
 [Service]
 Type=simple
 WorkingDirectory=/media/ealmeida/Dados/Dev/DashDescomplicar
-ExecStart=/home/ealmeida/.nvm/versions/node/v22.22.2/bin/npx tsx api/scripts/sessions-indexer.ts --watch
+# NUNCA --watch: incidente 110% CPU (i7-7500U) — decisão v2.7.2: timer 15min --full (ver obs-index-sync.timer)
+ExecStart=/home/ealmeida/.nvm/versions/node/v22.22.2/bin/npx tsx api/scripts/sessions-indexer.ts --full
 Restart=on-failure
 RestartSec=5
 KillMode=mixed