fix: correct type assertion in stateMapper test

The test for unknown result subtype was using an invalid subtype value
directly, which caused a TypeScript error. Changed to use a type
assertion to properly test the unknown subtype case, matching the
pattern used for testing unknown message types.

This fix ensures all TypeScript checks pass whilst still testing the
edge case behaviour for unexpected subtype values.

check-all.sh

@@ -36,11 +36,11 @@ echo -e "${YELLOW}🔍 Running all checks for Hikari Desktop...${NC}"
 run_check "Frontend lint" "pnpm lint" || failed=1
 run_check "Frontend format check" "pnpm format:check" || failed=1
 run_check "Frontend type check" "pnpm check" || failed=1
-run_check "Frontend tests" "pnpm test" || failed=1
+run_check "Frontend tests with coverage" "pnpm test:coverage" || failed=1
 
 # Backend checks
-run_check "Backend clippy (strict)" "cd src-tauri && cargo clippy --all-targets --all-features -- -D warnings" || failed=1
+run_check "Backend clippy (strict)" "(cd src-tauri && cargo clippy --all-targets --all-features -- -D warnings)" || failed=1
-run_check "Backend tests" "cargo test" || failed=1
+run_check "Backend tests with coverage" "(cd src-tauri && cargo llvm-cov --fail-under-lines 50)" || failed=1
 
 # Summary
 echo -e "\n${YELLOW}========================================${NC}"

src/lib/stores/config.test.ts

@@ -14,6 +14,7 @@ import {
   type Theme,
   type CustomThemeColors,
 } from "./config";
+import { invoke } from "@tauri-apps/api/core";
 
 // Mock Tauri APIs
 vi.mock("@tauri-apps/api/core", () => ({
@@ -487,4 +488,329 @@ describe("config store", () => {
       expect(typeof configStore.saveError.subscribe).toBe("function");
     });
   });
+
+  describe("Race Condition Tests", () => {
+    beforeEach(async () => {
+      // Setup mock to return a default config for load_config
+      const mockInvokeImpl = vi.mocked(invoke);
+      mockInvokeImpl.mockResolvedValue({
+        model: null,
+        api_key: null,
+        custom_instructions: null,
+        mcp_servers_json: null,
+        auto_granted_tools: [],
+        theme: "dark",
+        greeting_enabled: false,
+        greeting_custom_prompt: null,
+        notifications_enabled: false,
+        notification_volume: 0.7,
+        always_on_top: false,
+        update_checks_enabled: false,
+        character_panel_width: null,
+        font_size: 14,
+        streamer_mode: false,
+        streamer_hide_paths: false,
+        compact_mode: false,
+        profile_name: null,
+        profile_avatar_path: null,
+        profile_bio: null,
+        custom_theme_colors: {
+          bg_primary: null,
+          bg_secondary: null,
+          bg_terminal: null,
+          accent_primary: null,
+          accent_secondary: null,
+          text_primary: null,
+          text_secondary: null,
+          border_color: null,
+        },
+        budget_enabled: false,
+        session_token_budget: null,
+        session_cost_budget: null,
+        budget_action: "warn",
+        budget_warning_threshold: 0.8,
+        discord_rpc_enabled: false,
+      });
+
+      // Load initial config
+      await configStore.loadConfig();
+      vi.clearAllMocks();
+    });
+
+    it("handles rapid sequential config updates correctly", async () => {
+      // This test validates the fix for the config race condition that caused data loss
+      const mockInvokeImpl = vi.mocked(invoke);
+      const invokeCalls: Array<{ command: string; config: HikariConfig }> = [];
+
+      mockInvokeImpl.mockImplementation(async (command: string, args?: unknown) => {
+        if (command === "save_config" && args && typeof args === "object" && "config" in args) {
+          invokeCalls.push({ command, config: args.config as HikariConfig });
+          // Simulate small delay in saving
+          await new Promise((resolve) => setTimeout(resolve, 10));
+        }
+        return null;
+      });
+
+      // Perform rapid updates
+      await Promise.all([
+        configStore.updateConfig({ font_size: 16 }),
+        configStore.updateConfig({ theme: "light" }),
+        configStore.updateConfig({ compact_mode: true }),
+      ]);
+
+      // All three updates should have been saved
+      expect(invokeCalls.length).toBe(3);
+
+      // Get final config
+      const finalConfig = configStore.getConfig();
+
+      // Final config should have all updates
+      // Note: The last update wins for each field, but all fields should be preserved
+      expect(finalConfig.compact_mode).toBe(true);
+    });
+
+    it("preserves previous field values during concurrent updates", async () => {
+      // Set initial values
+      await configStore.updateConfig({
+        font_size: 16,
+        theme: "dark",
+        compact_mode: false,
+        streamer_mode: false,
+      });
+
+      vi.clearAllMocks();
+
+      const mockInvokeImpl = vi.mocked(invoke);
+      const invokeCalls: Array<{ command: string; config: HikariConfig }> = [];
+
+      mockInvokeImpl.mockImplementation(async (command: string, args?: unknown) => {
+        if (command === "save_config" && args && typeof args === "object" && "config" in args) {
+          invokeCalls.push({ command, config: args.config as HikariConfig });
+          await new Promise((resolve) => setTimeout(resolve, 5));
+        }
+        return null;
+      });
+
+      // Update different fields concurrently
+      await Promise.all([
+        configStore.updateConfig({ font_size: 18 }),
+        configStore.updateConfig({ theme: "light" }),
+        configStore.updateConfig({ compact_mode: true }),
+      ]);
+
+      // Check that each save included all previous config values
+      invokeCalls.forEach((call) => {
+        // Each save should have a complete config, not just the updated field
+        expect(call.config).toHaveProperty("font_size");
+        expect(call.config).toHaveProperty("theme");
+        expect(call.config).toHaveProperty("compact_mode");
+        expect(call.config).toHaveProperty("streamer_mode");
+        expect(call.config).toHaveProperty("model");
+        expect(call.config).toHaveProperty("api_key");
+      });
+    });
+
+    it("handles update during save operation", async () => {
+      const mockInvokeImpl = vi.mocked(invoke);
+      let firstSaveStarted = false;
+      let firstSaveCompleted = false;
+
+      mockInvokeImpl.mockImplementation(async (command: string) => {
+        if (command === "save_config") {
+          if (!firstSaveStarted) {
+            firstSaveStarted = true;
+            // Simulate slow save
+            await new Promise((resolve) => setTimeout(resolve, 50));
+            firstSaveCompleted = true;
+          } else {
+            // Second save starts while first is in progress
+            expect(firstSaveStarted).toBe(true);
+            // First save might not be complete yet (race condition scenario)
+          }
+        }
+        return null;
+      });
+
+      // Start first update
+      const firstUpdate = configStore.updateConfig({ font_size: 16 });
+
+      // Wait a bit then start second update whilst first is still saving
+      await new Promise((resolve) => setTimeout(resolve, 10));
+      const secondUpdate = configStore.updateConfig({ theme: "light" });
+
+      // Wait for both to complete
+      await Promise.all([firstUpdate, secondUpdate]);
+
+      // Both should complete successfully without errors
+      expect(firstSaveCompleted).toBe(true);
+    });
+
+    it("getConfig returns most recently set configuration", async () => {
+      await configStore.updateConfig({ font_size: 14 });
+      expect(configStore.getConfig().font_size).toBe(14);
+
+      await configStore.updateConfig({ font_size: 16 });
+      expect(configStore.getConfig().font_size).toBe(16);
+
+      await configStore.updateConfig({ font_size: 18 });
+      expect(configStore.getConfig().font_size).toBe(18);
+    });
+
+    it("updates do not lose data from previous operations", async () => {
+      // Set multiple fields
+      await configStore.updateConfig({
+        font_size: 16,
+        theme: "dark",
+        compact_mode: true,
+        streamer_mode: true,
+        model: "claude-sonnet-4",
+      });
+
+      // Update just one field
+      await configStore.updateConfig({ theme: "light" });
+
+      // Other fields should be preserved
+      const config = configStore.getConfig();
+      expect(config.theme).toBe("light");
+      expect(config.font_size).toBe(16);
+      expect(config.compact_mode).toBe(true);
+      expect(config.streamer_mode).toBe(true);
+      expect(config.model).toBe("claude-sonnet-4");
+    });
+
+    it("auto granted tools are not lost during other updates", async () => {
+      // Add some tools
+      await configStore.addAutoGrantedTool("Read");
+      await configStore.addAutoGrantedTool("Write");
+
+      expect(configStore.getConfig().auto_granted_tools).toContain("Read");
+      expect(configStore.getConfig().auto_granted_tools).toContain("Write");
+
+      // Update another field
+      await configStore.updateConfig({ theme: "light" });
+
+      // Tools should still be there
+      expect(configStore.getConfig().auto_granted_tools).toContain("Read");
+      expect(configStore.getConfig().auto_granted_tools).toContain("Write");
+    });
+
+    it("custom theme colors persist across other config updates", async () => {
+      const customColors: CustomThemeColors = {
+        bg_primary: "#1a1a2e",
+        bg_secondary: "#16213e",
+        bg_terminal: "#0f0f23",
+        accent_primary: "#e94560",
+        accent_secondary: "#533483",
+        text_primary: "#eaeaea",
+        text_secondary: "#a0a0a0",
+        border_color: "#333355",
+      };
+
+      await configStore.setCustomThemeColors(customColors);
+
+      // Update another field
+      await configStore.updateConfig({ font_size: 18 });
+
+      // Colors should still be there
+      const config = configStore.getConfig();
+      expect(config.custom_theme_colors.bg_primary).toBe("#1a1a2e");
+      expect(config.custom_theme_colors.accent_primary).toBe("#e94560");
+    });
+
+    it("handles save errors gracefully without losing data", async () => {
+      const mockInvokeImpl = vi.mocked(invoke);
+
+      // Set initial config
+      await configStore.updateConfig({ font_size: 14 });
+
+      // Make next save fail
+      mockInvokeImpl.mockRejectedValueOnce(new Error("Save failed"));
+
+      // Try to update - should throw
+      await expect(configStore.updateConfig({ theme: "light" })).rejects.toThrow();
+
+      // Original config should still be accessible
+      expect(configStore.getConfig().font_size).toBe(14);
+    });
+  });
+
+  describe("Config Persistence Tests", () => {
+    it("loadConfig retrieves saved configuration", async () => {
+      const mockConfig: HikariConfig = {
+        model: "claude-sonnet-4",
+        api_key: "test-key",
+        custom_instructions: "Be helpful",
+        mcp_servers_json: "{}",
+        auto_granted_tools: ["Read", "Write"],
+        theme: "light",
+        greeting_enabled: false,
+        greeting_custom_prompt: null,
+        notifications_enabled: false,
+        notification_volume: 0.5,
+        always_on_top: true,
+        update_checks_enabled: false,
+        character_panel_width: 400,
+        font_size: 18,
+        streamer_mode: true,
+        streamer_hide_paths: true,
+        compact_mode: true,
+        profile_name: "Test User",
+        profile_avatar_path: "/test/avatar.png",
+        profile_bio: "Test bio",
+        custom_theme_colors: {
+          bg_primary: null,
+          bg_secondary: null,
+          bg_terminal: null,
+          accent_primary: null,
+          accent_secondary: null,
+          text_primary: null,
+          text_secondary: null,
+          border_color: null,
+        },
+        budget_enabled: true,
+        session_token_budget: 100000,
+        session_cost_budget: 1.5,
+        budget_action: "block",
+        budget_warning_threshold: 0.9,
+        discord_rpc_enabled: false,
+      };
+
+      const mockInvokeImpl = vi.mocked(invoke);
+      mockInvokeImpl.mockResolvedValueOnce(mockConfig);
+
+      await configStore.loadConfig();
+
+      const loadedConfig = configStore.getConfig();
+      expect(loadedConfig.model).toBe("claude-sonnet-4");
+      expect(loadedConfig.theme).toBe("light");
+      expect(loadedConfig.font_size).toBe(18);
+      expect(loadedConfig.auto_granted_tools).toEqual(["Read", "Write"]);
+    });
+
+    it("saveConfig persists configuration to backend", async () => {
+      const mockInvokeImpl = vi.mocked(invoke);
+      const savedConfigs: HikariConfig[] = [];
+
+      mockInvokeImpl.mockImplementation(async (command: string, args?: unknown) => {
+        if (command === "save_config" && args && typeof args === "object" && "config" in args) {
+          savedConfigs.push(args.config as HikariConfig);
+        }
+        return null;
+      });
+
+      const configToSave: Partial<HikariConfig> = {
+        model: "claude-sonnet-4",
+        theme: "dark",
+        font_size: 16,
+      };
+
+      await configStore.updateConfig(configToSave);
+
+      expect(savedConfigs.length).toBeGreaterThan(0);
+      const lastSaved = savedConfigs[savedConfigs.length - 1];
+      expect(lastSaved.model).toBe("claude-sonnet-4");
+      expect(lastSaved.theme).toBe("dark");
+      expect(lastSaved.font_size).toBe(16);
+    });
+  });
 });

src/lib/stores/snippets.test.ts

@@ -285,6 +285,73 @@ describe("snippetsStore", () => {
       expect(get(snippetsStore.selectedCategory)).toBeNull();
     });
   });
+
+  describe("filteredSnippets", () => {
+    it("returns all snippets when no category selected", async () => {
+      const mockSnippets: Snippet[] = [
+        {
+          id: "snippet-1",
+          name: "Git Status",
+          content: "git status",
+          category: "Git",
+          is_default: false,
+          created_at: "2024-01-01T00:00:00Z",
+          updated_at: "2024-01-01T00:00:00Z",
+        },
+        {
+          id: "snippet-2",
+          name: "Docker PS",
+          content: "docker ps",
+          category: "Docker",
+          is_default: false,
+          created_at: "2024-01-01T00:00:00Z",
+          updated_at: "2024-01-01T00:00:00Z",
+        },
+      ];
+
+      setMockInvokeResult("list_snippets", mockSnippets);
+      setMockInvokeResult("get_snippet_categories", ["Git", "Docker"]);
+
+      await snippetsStore.loadSnippets();
+      snippetsStore.setSelectedCategory(null);
+
+      const filtered = get(snippetsStore.filteredSnippets);
+      expect(filtered).toHaveLength(2);
+    });
+
+    it("filters snippets by selected category", async () => {
+      const mockSnippets: Snippet[] = [
+        {
+          id: "snippet-1",
+          name: "Git Status",
+          content: "git status",
+          category: "Git",
+          is_default: false,
+          created_at: "2024-01-01T00:00:00Z",
+          updated_at: "2024-01-01T00:00:00Z",
+        },
+        {
+          id: "snippet-2",
+          name: "Docker PS",
+          content: "docker ps",
+          category: "Docker",
+          is_default: false,
+          created_at: "2024-01-01T00:00:00Z",
+          updated_at: "2024-01-01T00:00:00Z",
+        },
+      ];
+
+      setMockInvokeResult("list_snippets", mockSnippets);
+      setMockInvokeResult("get_snippet_categories", ["Git", "Docker"]);
+
+      await snippetsStore.loadSnippets();
+      snippetsStore.setSelectedCategory("Git");
+
+      const filtered = get(snippetsStore.filteredSnippets);
+      expect(filtered).toHaveLength(1);
+      expect(filtered[0].category).toBe("Git");
+    });
+  });
 });
 
 describe("snippet ID generation", () => {

src/lib/utils/stateMapper.test.ts

@@ -135,6 +135,151 @@ describe("stateMapper", () => {
       };
       expect(mapMessageToState(message)).toBeNull();
     });
+
+    it("returns typing for unknown tool", () => {
+      const message: ClaudeStreamMessage = {
+        type: "assistant",
+        message: {
+          content: [
+            {
+              type: "tool_use",
+              id: "tool-1",
+              name: "SomeUnknownTool",
+              input: {},
+            },
+          ],
+          model: "claude-3",
+          stop_reason: "tool_use",
+        },
+      };
+      expect(mapMessageToState(message)).toBe("typing");
+    });
+
+    it("returns thinking for thinking content block", () => {
+      const message: ClaudeStreamMessage = {
+        type: "assistant",
+        message: {
+          content: [{ type: "thinking", thinking: "Analyzing the problem..." }],
+          model: "claude-3",
+          stop_reason: "end_turn",
+        },
+      };
+      expect(mapMessageToState(message)).toBe("thinking");
+    });
+
+    it("returns null for assistant message with no recognizable content", () => {
+      const message: ClaudeStreamMessage = {
+        type: "assistant",
+        message: {
+          content: [],
+          model: "claude-3",
+          stop_reason: "end_turn",
+        },
+      };
+      expect(mapMessageToState(message)).toBeNull();
+    });
+
+    it("returns thinking for thinking_delta stream event", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "content_block_delta",
+          index: 0,
+          delta: {
+            type: "thinking_delta",
+            thinking: "Thinking...",
+          },
+        },
+      };
+      expect(mapMessageToState(message)).toBe("thinking");
+    });
+
+    it("returns typing for text_delta stream event", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "content_block_delta",
+          index: 0,
+          delta: {
+            type: "text_delta",
+            text: "Hello",
+          },
+        },
+      };
+      expect(mapMessageToState(message)).toBe("typing");
+    });
+
+    it("returns thinking for thinking content_block_start", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "content_block_start",
+          index: 0,
+          content_block: {
+            type: "thinking",
+            thinking: "",
+          },
+        },
+      };
+      expect(mapMessageToState(message)).toBe("thinking");
+    });
+
+    it("returns typing for text content_block_start", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "content_block_start",
+          index: 0,
+          content_block: {
+            type: "text",
+            text: "",
+          },
+        },
+      };
+      expect(mapMessageToState(message)).toBe("typing");
+    });
+
+    it("returns correct state for tool_use content_block_start", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "content_block_start",
+          index: 0,
+          content_block: {
+            type: "tool_use",
+            id: "tool-1",
+            name: "Read",
+            input: {},
+          },
+        },
+      };
+      expect(mapMessageToState(message)).toBe("searching");
+    });
+
+    it("returns null for stream_event with unrecognized type", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "message_start",
+        },
+      };
+      expect(mapMessageToState(message)).toBeNull();
+    });
+
+    it("returns null for result with unknown subtype", () => {
+      const message = {
+        type: "result",
+        subtype: "unknown_type",
+      } as unknown as ClaudeStreamMessage;
+      expect(mapMessageToState(message)).toBeNull();
+    });
+
+    it("returns null for unknown message type", () => {
+      const message = {
+        type: "unknown_type",
+      } as unknown as ClaudeStreamMessage;
+      expect(mapMessageToState(message)).toBeNull();
+    });
   });
 
   describe("extractTextFromMessage", () => {
@@ -192,6 +337,36 @@ describe("stateMapper", () => {
       };
       expect(extractTextFromMessage(message)).toBe("Completed successfully");
     });
+
+    it("returns null for result without result field", () => {
+      const message: ClaudeStreamMessage = {
+        type: "result",
+        subtype: "success",
+      };
+      expect(extractTextFromMessage(message)).toBeNull();
+    });
+
+    it("returns null for stream_event without delta text", () => {
+      const message: ClaudeStreamMessage = {
+        type: "stream_event",
+        event: {
+          type: "content_block_start",
+          index: 0,
+          content_block: {
+            type: "text",
+            text: "",
+          },
+        },
+      };
+      expect(extractTextFromMessage(message)).toBeNull();
+    });
+
+    it("returns null for unknown message type", () => {
+      const message = {
+        type: "unknown",
+      } as unknown as ClaudeStreamMessage;
+      expect(extractTextFromMessage(message)).toBeNull();
+    });
   });
 
   describe("extractToolInfo", () => {