feat: wire ai, automations, fleets and ssh-terminal to snippets (B2)

plugins/ai/src/backend/services.ts

@@ -51,3 +51,119 @@ export async function getNetworkTopology(
     return null;
   }
 }
+
+export interface SnippetSummary {
+  id: number;
+  name: string;
+  content: string;
+  description: string | null;
+  isNote: boolean;
+  folder: string | null;
+}
+
+/** Another plugin's snippets, as ctx.services.get("snippets.access") returns them. */
+interface SnippetsAccess {
+  list: () => Promise<SnippetSummary[]>;
+  get: (id: number) => Promise<{
+    id: number;
+    name: string;
+    content: string;
+    isNote: boolean;
+  } | null>;
+  create: (input: {
+    name: string;
+    content: string;
+    description?: string | null;
+    folder?: string | null;
+  }) => Promise<{ id: number; name: string }>;
+  update: (
+    id: number,
+    changes: {
+      name?: string;
+      content?: string;
+      description?: string | null;
+      folder?: string | null;
+    },
+  ) => Promise<void>;
+  remove: (id: number) => Promise<boolean>;
+}
+
+/**
+ * The user's own snippets, or null when the snippets plugin is off or the
+ * user may not use it. Optional: the list_snippets tool disappears without
+ * it, and the propose_*_snippet tools fail with a clear message.
+ */
+export async function listSnippets(
+  userId: string,
+): Promise<SnippetSummary[] | null> {
+  if (!current) return null;
+  try {
+    return await current
+      .get<SnippetsAccess>("snippets.access", { userId })
+      .list();
+  } catch {
+    return null;
+  }
+}
+
+export async function getSnippet(
+  userId: string,
+  id: number,
+): Promise<{
+  id: number;
+  name: string;
+  content: string;
+  isNote: boolean;
+} | null> {
+  if (!current) return null;
+  try {
+    return await current
+      .get<SnippetsAccess>("snippets.access", { userId })
+      .get(id);
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Requires the snippets plugin, unlike the read helpers above: a failed
+ * proposal apply must surface as an error the user sees, not silently no-op.
+ */
+function requireSnippetsAccess(userId: string): SnippetsAccess {
+  if (!current) {
+    throw new Error("The snippets plugin is disabled");
+  }
+  return current.get<SnippetsAccess>("snippets.access", { userId });
+}
+
+export async function createSnippet(
+  userId: string,
+  input: {
+    name: string;
+    content: string;
+    description?: string | null;
+    folder?: string | null;
+  },
+): Promise<{ id: number; name: string }> {
+  return requireSnippetsAccess(userId).create(input);
+}
+
+export async function updateSnippet(
+  userId: string,
+  id: number,
+  changes: {
+    name?: string;
+    content?: string;
+    description?: string | null;
+    folder?: string | null;
+  },
+): Promise<void> {
+  return requireSnippetsAccess(userId).update(id, changes);
+}
+
+export async function deleteSnippet(
+  userId: string,
+  id: number,
+): Promise<boolean> {
+  return requireSnippetsAccess(userId).remove(id);
+}

plugins/ai/src/backend/tools/executor.ts

@@ -2,13 +2,18 @@ import {
   createCurrentAutomationRepository,
   createCurrentFleetRepository,
   createCurrentHostRepository,
-  createCurrentSnippetRepository,
 } from "../../../../../src/backend/database/repositories/factory.js";
 import { validateDefinition } from "../../../../automations/src/backend/routes.js";
 import { resolveHostById } from "../../../../../src/backend/hosts/host-resolver.js";
 import { execCommand } from "../../../../../src/backend/hosts/metrics-shared/common-utils.js";
 import { withSshConnection } from "../ssh.js";
 import { getTool } from "./catalog.js";
+import {
+  createSnippet,
+  updateSnippet,
+  deleteSnippet,
+  getSnippet,
+} from "../services.js";
 
 /** Approved commands get a bounded window rather than hanging the request. */
 const COMMAND_TIMEOUT_MS = 60_000;
@@ -125,18 +130,15 @@ export async function applyProposal(
     }
 
     case "propose_create_snippet": {
-      const created = await createCurrentSnippetRepository().createSnippet(
-        userId,
-        {
-          name: requireString(payload.name, "name"),
-          content: requireString(payload.content, "content"),
-          description: optionalString(payload.description),
-          folder: optionalString(payload.folder),
-        } as any,
-      );
+      const created = await createSnippet(userId, {
+        name: requireString(payload.name, "name"),
+        content: requireString(payload.content, "content"),
+        description: optionalString(payload.description),
+        folder: optionalString(payload.folder),
+      });
       return {
         ok: true,
-        summary: `Created snippet ${(created as any)?.name ?? ""}`.trim(),
+        summary: `Created snippet ${created.name}`.trim(),
       };
     }
 
@@ -144,10 +146,7 @@ export async function applyProposal(
       const snippetId = requireNumber(payload.snippetId, "snippetId");
       const changes = (payload.changes ?? {}) as Record<string, unknown>;
 
-      const existing = await createCurrentSnippetRepository().findOwnedById(
-        userId,
-        snippetId,
-      );
+      const existing = await getSnippet(userId, snippetId);
       if (!existing) throw new Error("Snippet not found");
 
       const updates: Record<string, unknown> = {};
@@ -164,20 +163,13 @@ export async function applyProposal(
         return { ok: false, summary: "Nothing to change" };
       }
 
-      await createCurrentSnippetRepository().updateSnippet(
-        userId,
-        snippetId,
-        updates as any,
-      );
+      await updateSnippet(userId, snippetId, updates);
       return { ok: true, summary: `Updated snippet ${snippetId}` };
     }
 
     case "propose_delete_snippet": {
       const snippetId = requireNumber(payload.snippetId, "snippetId");
-      const deleted = await createCurrentSnippetRepository().deleteSnippet(
-        userId,
-        snippetId,
-      );
+      const deleted = await deleteSnippet(userId, snippetId);
       if (!deleted) throw new Error("Snippet not found");
       return { ok: true, summary: `Deleted snippet ${snippetId}` };
     }

plugins/ai/src/backend/tools/read-tools.ts

@@ -5,10 +5,13 @@ import {
   createCurrentFleetRepository,
   createCurrentHomepageItemRepository,
   createCurrentHostRepository,
-  createCurrentSnippetRepository,
 } from "../../../../../src/backend/database/repositories/factory.js";
 import { num, objectSchema, type AiTool } from "./types.js";
-import { listSavedWorkspaces, getNetworkTopology } from "../services.js";
+import {
+  listSavedWorkspaces,
+  getNetworkTopology,
+  listSnippets,
+} from "../services.js";
 
 /**
  * Read tools project explicit fields rather than spreading rows. Redaction runs
@@ -103,15 +106,14 @@ export const readTools: AiTool[] = [
   {
     name: "list_snippets",
     description:
-      "List the user's saved command snippets, including their folder and the command text.",
+      "List the user's saved command snippets, including their folder and the command text. Unavailable if the snippets plugin is disabled.",
     category: "read",
     parameters: objectSchema({}),
     handler: async (_args, context) => {
-      const snippets = await createCurrentSnippetRepository().listOwnedSnippets(
-        context.userId,
-      );
+      const snippets = await listSnippets(context.userId);
+      if (!snippets) return { unavailable: true, snippets: [] };
       return {
-        snippets: snippets.map((snippet: any) => ({
+        snippets: snippets.map((snippet) => ({
           id: snippet.id,
           name: snippet.name,
           content: snippet.content,