feat: add database seed script and utility scripts

- src/db/seed.ts: comprehensive seed data with idempotent upserts
  - 5 users (system, gjermund, operator, technician, analyst)
  - 5 queues (Support Desk, Operations, IT Infrastructure, Facilities, Field Ops)
  - 1 lifecycle (Demo service lifecycle with new→open→in_progress→resolved→closed)
  - 5 custom fields (impact, location, channel, urgency, outcome) with short keys
  - 10 realistic support tickets with varied statuses, custom fields, and history
  - 3 scrips (OnCreate email, OnResolve custom field, customer notification)
  - 2 templates (auto-response, resolve notification)
  - --reset flag to truncate all data before seeding
- scripts/smoke-test.ts: API smoke tests
- scripts/watch-frontend.sh: frontend dev helper

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/watch-frontend.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Watch for source changes and auto-rebuild + restart Tessera frontend
+DIR="/home/gjermund/projects/tessera/web/src"
+LAST_BUILD=0
+
+echo "Watching $DIR for changes..."
+
+inotifywait -m -r -e modify,create,delete "$DIR" --format '%w%f' 2>/dev/null | while read FILE; do
+  NOW=$(date +%s)
+  if [ $((NOW - LAST_BUILD)) -gt 3 ]; then
+    echo "[$(date +%H:%M:%S)] Change detected, rebuilding..."
+    cd /home/gjermund/projects/tessera/web && npx next build 2>&1 | tail -1
+    LAST_BUILD=$NOW
+  fi
+done