fix server-ci: install only claude-code, set SDK path in contract test

Two regressions from the previous CI install:

- Installing opencode-ai globally in server-ci/server-tests caused
  opencode-agent.test.ts (gated on \`hasOpenCode\`) to start running
  for the first time and surface real but unrelated test breakage.
  Trim the install to claude-code, which is all that's needed for the
  Claude e2e tests that motivated the change.

- claude-agent.integration.test.ts's supportedModels test calls the
  SDK's \`query()\` directly (bypassing ClaudeAgentClient) and didn't
  pass \`pathToClaudeCodeExecutable\`. The 0.2.71 SDK had a bundled
  cli.js fallback; 0.2.133 doesn't, so on Ubuntu CI it tries the
  per-platform binary path (\`...claude-agent-sdk-linux-x64-musl/claude\`)
  which isn't installed via the \`claude-code\` global. Resolve the
  binary explicitly in the test and pass it as the SDK option.

.github/workflows/ci.yml

@@ -88,8 +88,8 @@ jobs:
       - name: Install dependencies
         run: npm install
 
-      - name: Install agent CLIs for provider tests
-        run: npm install -g @anthropic-ai/claude-code @openai/codex@0.105.0 opencode-ai
+      - name: Install Claude Code CLI for provider tests
+        run: npm install -g @anthropic-ai/claude-code
 
       - name: Build highlight dependency
         run: npm run build --workspace=@getpaseo/highlight

.github/workflows/server-ci.yml

@@ -36,8 +36,8 @@ jobs:
       - name: Install server dependencies
         run: npm install --workspace=@getpaseo/server --include-workspace-root
 
-      - name: Install agent CLIs for provider tests
-        run: npm install -g @anthropic-ai/claude-code @openai/codex@0.105.0 opencode-ai
+      - name: Install Claude Code CLI for provider tests
+        run: npm install -g @anthropic-ai/claude-code
 
       - name: Build highlight dependency
         run: npm run build --workspace=@getpaseo/highlight

packages/server/src/server/agent/providers/claude-agent.integration.test.ts

@@ -6,7 +6,7 @@ import pino from "pino";
 import { query, type SDKUserMessage } from "@anthropic-ai/claude-agent-sdk";
 
 import type { AgentSession, AgentStreamEvent, ToolCallTimelineItem } from "../agent-sdk-types.js";
-import { isCommandAvailable } from "../../../utils/executable.js";
+import { findExecutable, isCommandAvailable } from "../../../utils/executable.js";
 import { withTimeout } from "../../../utils/promise-timeout.js";
 import { ClaudeAgentClient } from "./claude-agent.js";
 import { streamSession } from "./test-utils/session-stream-adapter.js";
@@ -223,6 +223,8 @@ describe("ClaudeAgentSession integration", () => {
   }, 60_000);
 
   test("supportedModels returns the current abstract Claude SDK model shape", async () => {
+    const claudeBinary = await findExecutable("claude");
+    if (!claudeBinary) throw new Error("claude binary required for this integration test");
     const claudeQuery = query({
       prompt: createEmptyPrompt(),
       options: {
@@ -230,6 +232,7 @@ describe("ClaudeAgentSession integration", () => {
         permissionMode: "plan",
         includePartialMessages: false,
         settingSources: ["user", "project"],
+        pathToClaudeCodeExecutable: claudeBinary,
       },
     });