test(21-00): add Wave 0 test stubs for chat service, routes, markdown, and input

server/src/__tests__/chat-routes.test.ts

@@ -0,0 +1,35 @@
+import { describe, it } from "vitest";
+
+describe("chatRoutes", () => {
+  describe("POST /companies/:companyId/conversations", () => {
+    it.todo("creates a conversation and returns 201");
+    it.todo("accepts optional title and agentId");
+  });
+
+  describe("GET /companies/:companyId/conversations", () => {
+    it.todo("returns paginated conversation list");
+    it.todo("supports cursor query param");
+  });
+
+  describe("GET /conversations/:id", () => {
+    it.todo("returns conversation by id");
+    it.todo("returns 404 for non-existent conversation");
+  });
+
+  describe("PATCH /conversations/:id", () => {
+    it.todo("updates conversation fields");
+  });
+
+  describe("DELETE /conversations/:id", () => {
+    it.todo("soft-deletes and returns 204");
+  });
+
+  describe("POST /conversations/:id/messages", () => {
+    it.todo("creates a message and returns 201");
+    it.todo("rejects invalid role");
+  });
+
+  describe("GET /conversations/:id/messages", () => {
+    it.todo("returns paginated message list");
+  });
+});

server/src/__tests__/chat-service.test.ts

@@ -0,0 +1,46 @@
+import { describe, it } from "vitest";
+
+describe("chatService", () => {
+  describe("createConversation", () => {
+    it.todo("creates a conversation row with companyId");
+    it.todo("returns the created conversation with id and timestamps");
+  });
+
+  describe("listConversations", () => {
+    it.todo("returns conversations sorted by updatedAt DESC");
+    it.todo("excludes soft-deleted conversations");
+    it.todo("supports cursor-based pagination with hasMore");
+    it.todo("limits results to max 100");
+  });
+
+  describe("getConversation", () => {
+    it.todo("returns conversation by id");
+    it.todo("throws notFound for non-existent conversation");
+    it.todo("throws notFound for soft-deleted conversation");
+  });
+
+  describe("updateConversation", () => {
+    it.todo("updates title");
+    it.todo("sets pinnedAt timestamp");
+    it.todo("clears pinnedAt when set to null");
+    it.todo("sets archivedAt timestamp");
+    it.todo("bumps updatedAt on every update");
+  });
+
+  describe("softDeleteConversation", () => {
+    it.todo("sets deletedAt timestamp");
+    it.todo("throws notFound if already deleted");
+  });
+
+  describe("addMessage", () => {
+    it.todo("inserts a message row with conversationId and role");
+    it.todo("bumps conversation updatedAt after insert");
+    it.todo("auto-sets title from first user message when title is null");
+    it.todo("does not overwrite existing title on subsequent messages");
+  });
+
+  describe("listMessages", () => {
+    it.todo("returns messages for conversation sorted by createdAt DESC");
+    it.todo("supports cursor-based pagination");
+  });
+});

ui/src/components/ChatInput.test.tsx

@@ -0,0 +1,19 @@
+// @vitest-environment node
+import { describe, it } from "vitest";
+
+describe("ChatInput", () => {
+  describe("keyboard shortcuts (INPUT-07)", () => {
+    it.todo("calls onSend when Enter is pressed without Shift");
+    it.todo("inserts newline when Shift+Enter is pressed");
+    it.todo("clears input when Escape is pressed");
+    it.todo("does not send when input is empty");
+  });
+
+  describe("auto-resize (INPUT-01)", () => {
+    it.todo("textarea has max-height constraint");
+  });
+
+  describe("submit state", () => {
+    it.todo("disables send button when isSubmitting is true");
+  });
+});

ui/src/components/ChatMarkdownMessage.test.tsx

@@ -0,0 +1,17 @@
+// @vitest-environment node
+import { describe, it } from "vitest";
+
+describe("ChatMarkdownMessage", () => {
+  describe("markdown rendering (CHAT-02)", () => {
+    it.todo("renders plain text as paragraph");
+    it.todo("renders code blocks with hljs classes for syntax highlighting");
+    it.todo("renders GFM tables");
+    it.todo("renders headings, lists, and links");
+  });
+
+  describe("code block features (CHAT-03)", () => {
+    it.todo("renders language label from code fence");
+    it.todo("renders copy button with aria-label");
+    it.todo("extracts code text content for clipboard");
+  });
+});