Add Grafana access review connector support

Add Grafana as an access review connector-backed source.

This introduces a Grafana access-review driver, provider registration,
and connector settings for the Grafana base URL. It also wires the
new provider through GraphQL and access-review UI input mapping so
API-key connectors can be created from the product.

A connector_provider enum migration is included so Grafana can be
persisted in existing databases.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>

pkg/coredata/connector_provider.go

@@ -33,6 +33,7 @@ const (
 	ConnectorProviderBrex         ConnectorProvider = "BREX"
 	ConnectorProviderTally        ConnectorProvider = "TALLY"
 	ConnectorProviderCloudflare   ConnectorProvider = "CLOUDFLARE"
+	ConnectorProviderGrafana      ConnectorProvider = "GRAFANA"
 	ConnectorProviderOpenAI       ConnectorProvider = "OPENAI"
 	ConnectorProviderSentry       ConnectorProvider = "SENTRY"
 	ConnectorProviderSupabase     ConnectorProvider = "SUPABASE"
@@ -72,6 +73,7 @@ func ConnectorProviders() []ConnectorProvider {
 		ConnectorProviderBrex,
 		ConnectorProviderTally,
 		ConnectorProviderCloudflare,
+		ConnectorProviderGrafana,
 		ConnectorProviderOpenAI,
 		ConnectorProviderSentry,
 		ConnectorProviderSupabase,
@@ -107,6 +109,7 @@ func (v ConnectorProvider) IsValid() bool {
 		ConnectorProviderBrex,
 		ConnectorProviderTally,
 		ConnectorProviderCloudflare,
+		ConnectorProviderGrafana,
 		ConnectorProviderOpenAI,
 		ConnectorProviderSentry,
 		ConnectorProviderSupabase,

pkg/coredata/connector_settings.go

@@ -39,6 +39,10 @@ type (
 		OrganizationSlug string `json:"organization_slug"`
 	}
 
+	GrafanaConnectorSettings struct {
+		BaseURL string `json:"base_url"`
+	}
+
 	SupabaseConnectorSettings struct {
 		OrganizationSlug string `json:"organization_slug"`
 	}

pkg/coredata/migrations/20260528T214500Z.sql

@@ -0,0 +1,15 @@
+-- Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted, provided that the above
+-- copyright notice and this permission notice appear in all copies.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+-- REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+-- AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+-- INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+-- LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+-- OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+-- PERFORMANCE OF THIS SOFTWARE.
+
+ALTER TYPE connector_provider ADD VALUE IF NOT EXISTS 'GRAFANA';