diff --git a/packages/opencode/test/util/lazy.test.ts b/packages/opencode/test/util/lazy.test.ts
index 66a08b783..cb2c847ff 100644
--- a/packages/opencode/test/util/lazy.test.ts
+++ b/packages/opencode/test/util/lazy.test.ts
@@ -47,4 +47,44 @@ describe("util.lazy", () => {
     expect(lazyNull()).toBe(null)
     expect(lazyUndefined()).toBe(undefined)
   })
+
+  // altimate_change start — error recovery and reset tests
+  test("retries initialization after a throw (does not cache failures)", () => {
+    let attempt = 0
+    const lazyValue = lazy(() => {
+      attempt++
+      if (attempt === 1) throw new Error("init failed")
+      return "recovered"
+    })
+
+    expect(() => lazyValue()).toThrow("init failed")
+    expect(attempt).toBe(1)
+
+    // Second call should retry, not return cached error
+    const result = lazyValue()
+    expect(result).toBe("recovered")
+    expect(attempt).toBe(2)
+
+    // Third call should use cached value
+    const result2 = lazyValue()
+    expect(result2).toBe("recovered")
+    expect(attempt).toBe(2)
+  })
+
+  test("reset() allows re-initialization", () => {
+    let callCount = 0
+    const lazyValue = lazy(() => {
+      callCount++
+      return callCount
+    })
+
+    expect(lazyValue()).toBe(1)
+    expect(lazyValue()).toBe(1)
+
+    lazyValue.reset()
+
+    expect(lazyValue()).toBe(2)
+    expect(lazyValue()).toBe(2)
+  })
+  // altimate_change end
 })
diff --git a/packages/opencode/test/util/proxied.test.ts b/packages/opencode/test/util/proxied.test.ts
new file mode 100644
index 000000000..a268bb620
--- /dev/null
+++ b/packages/opencode/test/util/proxied.test.ts
@@ -0,0 +1,52 @@
+// altimate_change start — tests for proxied() corporate proxy detection
+import { describe, test, expect, beforeEach, afterEach } from "bun:test"
+import { proxied } from "../../src/util/proxied"
+
+describe("proxied(): corporate proxy detection", () => {
+  const PROXY_VARS = ["HTTP_PROXY", "HTTPS_PROXY", "http_proxy", "https_proxy"]
+  const saved: Record<string, string | undefined> = {}
+
+  beforeEach(() => {
+    for (const v of PROXY_VARS) {
+      saved[v] = process.env[v]
+      delete process.env[v]
+    }
+  })
+
+  afterEach(() => {
+    for (const v of PROXY_VARS) {
+      if (saved[v] !== undefined) process.env[v] = saved[v]
+      else delete process.env[v]
+    }
+  })
+
+  test("returns false when no proxy env vars are set", () => {
+    expect(proxied()).toBe(false)
+  })
+
+  test("returns true when HTTP_PROXY is set", () => {
+    process.env.HTTP_PROXY = "http://proxy.corp.com:8080"
+    expect(proxied()).toBe(true)
+  })
+
+  test("returns true when HTTPS_PROXY is set", () => {
+    process.env.HTTPS_PROXY = "http://proxy.corp.com:8443"
+    expect(proxied()).toBe(true)
+  })
+
+  test("returns true when lowercase http_proxy is set", () => {
+    process.env.http_proxy = "http://proxy.corp.com:8080"
+    expect(proxied()).toBe(true)
+  })
+
+  test("returns true when lowercase https_proxy is set", () => {
+    process.env.https_proxy = "http://proxy.corp.com:8443"
+    expect(proxied()).toBe(true)
+  })
+
+  test("returns false when env var is set to empty string", () => {
+    process.env.HTTP_PROXY = ""
+    expect(proxied()).toBe(false)
+  })
+})
+// altimate_change end