Make bot types an extension of the bot's kind

Coordinator and worker come from bots.kind; bot_types now only holds
workspace_admin (was admin), each row naming its workspace, with no scope
field. Rows from v0.2.8 and earlier are fixed at boot by migrateBotTypes.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/types/index.ts

@@ -34,7 +34,7 @@ import type { HarnessKind } from "../dict/harness-dict";
 import type { HarnessProviderKind } from "../dict/harness-provider-dict";
 import type { EnvParadigm, KnownEnv, SecretRequestStatus } from "../dict/env-dict";
 import type { ContainerStatus } from "../dict/computer-dict";
-import type { BotFace, BotMessageReactionEmoji } from "../dict/bot-dict";
+import type { BotFace, BotKind, BotMessageReactionEmoji } from "../dict/bot-dict";
 import type { HarnessCallSettings, TokenUsageSummary } from "../harness/usage/types";
 import type { McpServerStatus, McpTransport } from "../dict/mcp-dict";
 import type { ExtensionProposalKind, ExtensionProposalStatus } from "../dict/extension-proposal-dict";
@@ -2051,6 +2051,11 @@ export type TypeAssignmentMatrixType<
 
 export type BotType = (typeof BotTypes)[number]["value"];
 
+/**
+ * What a bot is where it works: its kind, or a type it holds there.
+ */
+export type BotRole = BotKind | BotType;
+
 export type BotPermission = (typeof BotPermissions)[number]["value"];
 
 export type LoginFormObject = {