Add Better Stack access review connector

Better Stack exposes team members and pending invitations through its
Uptime API. Wire it as an access-review connector so a Better Stack
team can be reviewed in access-review campaigns.

Better Stack has no third-party OAuth app for listing members (its
OAuth is an end-user MCP sign-in), so the connector authenticates with
a Bearer API token plus the team name that scopes the team-members
listing. The driver paginates /api/v2/team-members, maps roles and
invitation records into account records, and the source name is
resolved from the configured team.

This wires the full surface: the provider enum and migration, the
connector settings, the registry registration with the team-name extra
setting, the GraphQL input and resolver marshaling, the frontend field
mapping and connector logo, and cassette-backed driver tests.

Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>

packages/ui/src/Atoms/ThirdParties/BetterStack.tsx

@@ -0,0 +1,16 @@
+import type { ComponentProps } from "react";
+
+export function BetterStack(props: ComponentProps<"svg">) {
+  return (
+    <svg
+      viewBox="0 0 24 24"
+      xmlns="http://www.w3.org/2000/svg"
+      {...props}
+    >
+      <path
+        d="m.7792 10.7479-.7654 6.6384a2.0957 2.0957 0 0 0 .696 1.8122l1.8965 1.672c.6494.5725 1.658.0145 1.5185-.84L2.6039 10.705c-.1723-1.056-1.7022-1.02-1.8247.0429Zm12.3733 8.714L8.63 6.431c-.5023-1.4472-2.6082-1.3845-3.0203.0898l-1.376 4.9234c-.156.559-.216.8822.0005 1.4212h.5225l1.8993 6.0694c.294.7324.9017 1.3009 1.6611 1.5538l2.8315.9435c1.2417.4137 2.4268-.7513 2.004-1.97zm10.6297-1.0332L15.7907 3.4433c-.6971-1.3072-2.5779-1.2727-3.227.0589l-1.9652 3.9555c-.2375.487-.1274.6608.07.9435.1585.2268.526.2447.6758.012.147-.2287.488-.2076.6058.0375l5.1379 10.687a2.735 2.735 0 0 0 2.1416 1.6016l2.7183.3476c1.4628.1924 2.5299-1.3539 1.8343-2.6582z"
+        fill="#000000"
+      />
+    </svg>
+  );
+}

packages/ui/src/Atoms/ThirdParties/ThirdPartyLogo.tsx

@@ -16,6 +16,7 @@ import type { ComponentProps, FC } from "react";
 
 import { Anthropic } from "./Anthropic";
 import { Asana } from "./Asana";
+import { BetterStack } from "./BetterStack";
 import { Bitbucket } from "./Bitbucket";
 import { Brex } from "./Brex";
 import { Clerk } from "./Clerk";
@@ -57,6 +58,7 @@ import { Zendesk } from "./Zendesk";
 const thirdParties: Record<string, FC<ComponentProps<"svg">>> = {
   ANTHROPIC: Anthropic,
   ASANA: Asana,
+  BETTER_STACK: BetterStack,
   BITBUCKET: Bitbucket,
   BREX: Brex,
   CLERK: Clerk,

packages/ui/src/Atoms/ThirdParties/index.ts

@@ -1,5 +1,6 @@
 export { Anthropic } from "./Anthropic";
 export { Asana } from "./Asana";
+export { BetterStack } from "./BetterStack";
 export { Bitbucket } from "./Bitbucket";
 export { Brex } from "./Brex";
 export { Clerk } from "./Clerk";