Add PostHog access review connector support

Introduce a PostHog access-review driver that lists organization\nmembers and maps role, MFA, and timestamp fields into account\nrecords.\n\nRegister PostHog as a builtin API-key connector provider and expose\nit through the connector provider enum so access-review source\ncreation can discover it.

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

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

pkg/connector/provider/builtin.go

@@ -45,6 +45,7 @@ func NewBuiltinRegistry() *Registry {
 		notionRegistration(),
 		onePasswordRegistration(),
 		openaiRegistration(),
+		posthogRegistration(),
 		pagerdutyRegistration(),
 		resendRegistration(),
 		sentryRegistration(),

pkg/connector/provider/posthog.go

@@ -0,0 +1,35 @@
+// 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.
+
+package provider
+
+import (
+	"context"
+	"net/http"
+
+	"go.gearno.de/kit/log"
+	"go.probo.inc/probo/pkg/accessreview/drivers"
+	"go.probo.inc/probo/pkg/coredata"
+)
+
+func posthogRegistration() *Registration {
+	return &Registration{
+		Provider:       coredata.ConnectorProviderPostHog,
+		DisplayName:    "PostHog",
+		SupportsAPIKey: true,
+		NewDriver: func(_ context.Context, c *http.Client, _ *coredata.Connector, _ *log.Logger) (drivers.Driver, error) {
+			return drivers.NewPostHogDriver(c), nil
+		},
+	}
+}