feat: phase 4 integrations — connectors, rybbit analytics, webhooks

- core.integrations (migration 00005) with AES-256-GCM-encrypted
  credentials (PRIMORA_ENCRYPTION_KEY, hex/base64, dev fallback);
  has_credentials serialization only — secrets never leave the server
- /projects/:id/integrations list/create/delete/test; health check hits
  the stored base URL with a 5s timeout and records status
- Rybbit connector: GET …/integrations/:id/analytics proxies
  /api/organizations + /api/sites/* server-side into a normalized shape
- core.webhooks + core.webhook_deliveries; CRUD, deliveries, test, and
  POST …/deploy-markers. Events: issue.created (new fingerprint on
  ingest), deploy.marker, webhook.test. X-Primora-Signature HMAC-SHA256
  over the raw body; in-process dispatcher, 3 attempts, quadratic
  backoff, 10s timeout, pending-scan on boot
- HTTPS enforced for public targets; HTTP allowed for loopback/private/
  self-hosted sinks
- Integrations page (connectors + webhooks tabs, inline analytics,
  delivery log, secret-shown-once), demo-mode stubs
- 12 new primora_* MCP tools
- workspace 0.4.0

Authored By: TDvorak <[email protected]>

apps/backend/internal/database/db/telemetry.sql.go

@@ -173,6 +173,25 @@ func (q *Queries) GetComponentByName(ctx context.Context, arg GetComponentByName
 	return i, err
 }
 
+const hasFingerprintSeen = `-- name: HasFingerprintSeen :one
+SELECT EXISTS(
+  SELECT 1 FROM core.events
+  WHERE project_id = $1 AND fingerprint = $2 AND type = 'error'
+) AS seen
+`
+
+type HasFingerprintSeenParams struct {
+	ProjectID   uuid.UUID `json:"project_id"`
+	Fingerprint string    `json:"fingerprint"`
+}
+
+func (q *Queries) HasFingerprintSeen(ctx context.Context, arg HasFingerprintSeenParams) (bool, error) {
+	row := q.db.QueryRow(ctx, hasFingerprintSeen, arg.ProjectID, arg.Fingerprint)
+	var seen bool
+	err := row.Scan(&seen)
+	return seen, err
+}
+
 const insertEvent = `-- name: InsertEvent :one
 INSERT INTO core.events (project_id, component_id, type, severity, message, payload, fingerprint, ts)
 VALUES ($1, $2, $3, $4, $5, $6, $7, $8)