Add Claude Fable 5 support

.agents/docs/agent-adapters.md

@@ -53,7 +53,7 @@ Model/effort lists below are the **statically declared defaults**. Several provi
 
 | Provider     | Models                                                 | Efforts                                  | Live Input            | Structured Session     |
 | ------------ | ------------------------------------------------------ | ---------------------------------------- | --------------------- | ---------------------- |
-| Claude       | opus-4-8, opus-4-7, opus-4-6, sonnet, haiku            | low, medium, high, xHigh, max, ultracode | terminal              | No                     |
+| Claude       | opus-4-8, fable-5, opus-4-7, opus-4-6, sonnet, haiku   | low, medium, high, xHigh, max, ultracode | terminal              | No                     |
 | Codex        | (probed dynamically via app-server)                    | (probed dynamically)                     | terminal / GUI server | Yes (stdio app-server) |
 | Gemini       | (probed dynamically via ACP)                           | (probed dynamically)                     | terminal              | No                     |
 | Copilot      | (probed via ACP)                                       | (probed via ACP)                         | terminal              | Yes (ACP)              |

package.json

@@ -52,7 +52,7 @@
   },
   "dependencies": {
     "@agentclientprotocol/sdk": "^0.21.1",
-    "@anthropic-ai/claude-agent-sdk": "^0.3.154",
+    "@anthropic-ai/claude-agent-sdk": "^0.3.170",
     "@chenglou/pretext": "^0.0.6",
     "@dnd-kit/abstract": "^0.4.0",
     "@dnd-kit/collision": "^0.4.0",

pnpm-workspace.yaml

@@ -50,15 +50,15 @@ nodeLinker: hoisted
 
 minimumReleaseAgeExclude:
   - electron@41.7.0
-  - "@anthropic-ai/claude-agent-sdk-darwin-arm64@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-darwin-x64@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-linux-arm64-musl@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-linux-arm64@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-linux-x64-musl@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-linux-x64@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-win32-arm64@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk-win32-x64@0.3.154"
-  - "@anthropic-ai/claude-agent-sdk@0.3.154"
+  - "@anthropic-ai/claude-agent-sdk-darwin-arm64@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-darwin-x64@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-linux-arm64-musl@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-linux-arm64@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-linux-x64-musl@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-linux-x64@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-win32-arm64@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk-win32-x64@0.3.170"
+  - "@anthropic-ai/claude-agent-sdk@0.3.170"
   # Already present in the lockfile when the supply-chain guard was added.
   - "react@19.2.7"
   - "react-dom@19.2.7"

src/renderer/components/providers/claude/index.test.tsx

@@ -0,0 +1,71 @@
+import { describe, expect, it } from "vitest";
+import type { AgentCapability } from "@/shared/contracts";
+import { getComposerControls } from "../ProviderIcon";
+import type { ComposerControl } from "@/renderer/components/thread/ThreadComposer";
+import "./index";
+
+const capabilities = {
+  models: [
+    { id: "claude-fable-5", label: "Fable 5" },
+    { id: "haiku", label: "Haiku" },
+  ],
+  efforts: ["low", "medium", "high", "xHigh", "max", "ultracode"],
+  defaultEffort: "high",
+  modelEfforts: {
+    "claude-fable-5": ["low", "medium", "high", "xHigh", "max", "ultracode"],
+    haiku: [],
+  },
+  modes: ["agent", "plan"],
+  approvalPolicies: [
+    { id: "default", label: "Default" },
+    { id: "auto", label: "Auto mode" },
+    { id: "bypassPermissions", label: "Bypass Permissions" },
+  ],
+  sandboxModes: [],
+  supportsResume: true,
+  supportsDirectInput: true,
+  liveInputMode: "terminal",
+  presentationMode: "terminal",
+  settingDefs: [],
+} as AgentCapability;
+
+function isPermissionControl(
+  control: ComposerControl,
+): control is ComposerControl & { iconKind: "permission" } {
+  return "iconKind" in control && control.iconKind === "permission";
+}
+
+describe("Claude composer controls", () => {
+  it("allows auto permissions for Fable 5", () => {
+    const controls = getComposerControls("claude")?.({
+      capabilities,
+      config: { model: "claude-fable-5" },
+      isDisabled: false,
+      onConfigChange: () => undefined,
+    });
+
+    const permission = controls?.find(isPermissionControl);
+    expect(permission && "options" in permission ? permission.options : []).toContainEqual({
+      id: "auto",
+      label: "Auto mode",
+    });
+  });
+
+  it("filters auto permissions for Haiku", () => {
+    const controls = getComposerControls("claude")?.({
+      capabilities,
+      config: { model: "haiku", approvalPolicy: "auto" },
+      isDisabled: false,
+      onConfigChange: () => undefined,
+    });
+
+    const permission = controls?.find(isPermissionControl);
+    expect(permission && "options" in permission ? permission.options : []).not.toContainEqual({
+      id: "auto",
+      label: "Auto mode",
+    });
+    expect(permission && "value" in permission ? permission.value : undefined).toBe(
+      "bypassPermissions",
+    );
+  });
+});

src/renderer/components/providers/claude/index.tsx

@@ -32,17 +32,19 @@ registerConflictResolverDefaults("claude", {
   effort: "high",
 });
 
+// Auto mode is only supported for Sonnet 4.6+ and Opus 4.6+.
+// Filter it out for Haiku and other models that don't support it.
+const AUTO_CAPABLE_MODELS = new Set([
+  "sonnet",
+  "claude-fable-5",
+  "claude-opus-4-6",
+  "claude-opus-4-7",
+  "claude-opus-4-8",
+]);
+
 registerComposerControls("claude", ({ capabilities, config, isDisabled, onConfigChange }) => {
   const isPlanMode = (config.mode ?? "agent") !== "agent";
 
-  // Auto mode is only supported for Sonnet 4.6+ and Opus 4.6+.
-  // Filter it out for Haiku and other models that don't support it.
-  const AUTO_CAPABLE_MODELS = new Set([
-    "sonnet",
-    "claude-opus-4-6",
-    "claude-opus-4-7",
-    "claude-opus-4-8",
-  ]);
   const modelSupportsAuto = !config.model || AUTO_CAPABLE_MODELS.has(config.model);
   const filteredPolicies = modelSupportsAuto
     ? capabilities.approvalPolicies

src/renderer/components/providers/triggerWords.test.ts

@@ -9,6 +9,7 @@ function words(kind: string | undefined, model: string | undefined): string[] {
 describe("getTriggerWords", () => {
   it("leaves workflow as plain text for Claude models", () => {
     expect(words("claude", "claude-opus-4-8")).toEqual([]);
+    expect(words("claude", "claude-fable-5")).toEqual([]);
     expect(words("claude", "claude-opus-4-7")).toEqual([]);
     expect(words("claude", "claude-opus-4-6")).toEqual([]);
     expect(words("claude", "sonnet")).toEqual([]);

src/supervisor/agents/claude/claude.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from "vitest";
 import { createClaudeAdapter } from "./index";
-import { parseClaudeAuthStatusJson } from "./detection";
+import { claudeCapabilities, parseClaudeAuthStatusJson } from "./detection";
 import type { OscNotification, OscTitle } from "@/shared/osc";
 import type { ProjectLocation, ThreadConfig } from "@/shared/contracts";
 
@@ -131,6 +131,26 @@ describe("createClaudeAdapter structured sessions", () => {
   });
 });
 
+describe("claudeCapabilities", () => {
+  it("advertises Fable 5 as a 1M-only non-fast model guarded by the probe", () => {
+    expect(claudeCapabilities.models).toContainEqual({ id: "claude-fable-5", label: "Fable 5" });
+    expect(claudeCapabilities.modelEfforts["claude-fable-5"]).toEqual([
+      "low",
+      "medium",
+      "high",
+      "xHigh",
+      "max",
+      "ultracode",
+    ]);
+    expect(claudeCapabilities.modelContextSizes?.["claude-fable-5"]).toEqual(["1m"]);
+    expect(claudeCapabilities.fastModels).not.toContain("claude-fable-5");
+  });
+
+  it("lists Fable 5 first so the latest model is the default for new threads", () => {
+    expect(claudeCapabilities.models[0]).toEqual({ id: "claude-fable-5", label: "Fable 5" });
+  });
+});
+
 describe("createClaudeAdapter buildAcpLogoutCommand", () => {
   it("returns `claude auth logout` so the Settings logout button can drive it", async () => {
     const adapter = createClaudeAdapter();

src/supervisor/agents/claude/detection.ts

@@ -20,19 +20,24 @@ const CLAUDE_BUILT_IN_SLASH_COMMANDS: AgentCapability["slashCommands"] = [
   },
 ];
 
+/** Effort tiers shared by the frontier models (Opus 4.7/4.8 and Fable 5). */
+const PREMIUM_EFFORT_TIERS = ["low", "medium", "high", "xHigh", "max", "ultracode"];
+
 export const claudeCapabilities: AgentCapability = {
   models: [
+    { id: "claude-fable-5", label: "Fable 5" },
     { id: "claude-opus-4-8", label: "Opus 4.8" },
     { id: "claude-opus-4-7", label: "Opus 4.7" },
     { id: "claude-opus-4-6", label: "Opus 4.6" },
     { id: "sonnet", label: "Sonnet" },
     { id: "haiku", label: "Haiku" },
   ],
-  efforts: ["low", "medium", "high", "xHigh", "max", "ultracode"],
+  efforts: PREMIUM_EFFORT_TIERS,
   defaultEffort: "high",
   modelEfforts: {
-    "claude-opus-4-8": ["low", "medium", "high", "xHigh", "max", "ultracode"],
-    "claude-opus-4-7": ["low", "medium", "high", "xHigh", "max", "ultracode"],
+    "claude-fable-5": PREMIUM_EFFORT_TIERS,
+    "claude-opus-4-8": PREMIUM_EFFORT_TIERS,
+    "claude-opus-4-7": PREMIUM_EFFORT_TIERS,
     "claude-opus-4-6": ["low", "medium", "high", "max"],
     haiku: [],
     sonnet: ["low", "medium", "high", "max"],
@@ -45,6 +50,7 @@ export const claudeCapabilities: AgentCapability = {
   // to 1M (the long-context build users select these for); Sonnet defaults to
   // 200k because the 1M tier is billed per-token at premium rates.
   modelContextSizes: {
+    "claude-fable-5": ["1m"],
     "claude-opus-4-8": ["1m", "200k"],
     "claude-opus-4-7": ["1m", "200k"],
     "claude-opus-4-6": ["1m", "200k"],