fix(providers): drop saved Requesty auth and headers on shell retarget

The Requesty retarget boundary only gated the generic OPENAI_API_KEY
selection. Requesty supports custom auth headers, so a saved profile's
credential can also ride in the OPENAI_AUTH_* trio or
ANTHROPIC_CUSTOM_HEADERS, and a shell OPENAI_BASE_URL retarget still sent
those to the new endpoint.

Apply the existing Runcrate retarget handling to a Requesty retarget away
from its saved endpoint, so every credential channel follows the same
rule. A canonical regional switch and a saved non-canonical profile
relaunched at its own URL keep their saved auth, matching profile apply.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/utils/providerProfile.test.ts

@@ -3871,3 +3871,75 @@ test('a shell URL retarget to Requesty does not adopt another profile key as the
     'shell-requesty-key',
   )
 })
+
+test('a shell URL retarget drops a saved Requesty profile custom auth and headers', async () => {
+  // Requesty supports custom auth headers, so its saved credential can ride in
+  // the custom-auth trio or custom headers as well as the API key aliases.
+  const persisted = profile('openai', {
+    CLAUDE_CODE_PROVIDER_ROUTE_ID: 'requesty',
+    OPENAI_BASE_URL: 'https://router.requesty.ai/v1',
+    OPENAI_MODEL: 'openai/gpt-5-mini',
+    OPENAI_API_KEY: 'saved-requesty-key',
+    REQUESTY_API_KEY: 'saved-requesty-key',
+    OPENAI_AUTH_HEADER: 'X-Requesty-Auth',
+    OPENAI_AUTH_SCHEME: 'raw',
+    OPENAI_AUTH_HEADER_VALUE: 'saved-auth-secret',
+    ANTHROPIC_CUSTOM_HEADERS: 'X-Requesty-Auth: saved-header-secret',
+  })
+
+  for (const shellBaseUrl of [
+    'https://example.test/v1',
+    'http://router.requesty.ai/v1',
+  ]) {
+    const env = await buildStartupEnvFromProfile({
+      persisted,
+      processEnv: { OPENAI_BASE_URL: shellBaseUrl },
+    })
+    assert.equal(env.OPENAI_BASE_URL, shellBaseUrl)
+    assert.equal(env.OPENAI_API_KEY, undefined)
+    assert.equal(env.REQUESTY_API_KEY, undefined)
+    assert.equal(env.OPENAI_AUTH_HEADER, undefined)
+    assert.equal(env.OPENAI_AUTH_SCHEME, undefined)
+    assert.equal(env.OPENAI_AUTH_HEADER_VALUE, undefined)
+    assert.equal(env.ANTHROPIC_CUSTOM_HEADERS, undefined)
+  }
+
+  // Explicit shell credentials still follow the retargeted endpoint.
+  const explicit = await buildStartupEnvFromProfile({
+    persisted,
+    processEnv: {
+      OPENAI_BASE_URL: 'https://example.test/v1',
+      OPENAI_API_KEY: 'shell-key',
+      OPENAI_AUTH_HEADER: 'X-Shell-Auth',
+      OPENAI_AUTH_SCHEME: 'bearer',
+      OPENAI_AUTH_HEADER_VALUE: 'shell-auth-secret',
+    },
+  })
+  assert.equal(explicit.OPENAI_API_KEY, 'shell-key')
+  assert.equal(explicit.OPENAI_AUTH_HEADER, 'X-Shell-Auth')
+  assert.equal(explicit.OPENAI_AUTH_SCHEME, 'bearer')
+  assert.equal(explicit.OPENAI_AUTH_HEADER_VALUE, 'shell-auth-secret')
+
+  // A canonical regional host is still Requesty: the saved credentials follow.
+  const regional = await buildStartupEnvFromProfile({
+    persisted,
+    processEnv: { OPENAI_BASE_URL: 'https://router.eu.requesty.ai/v1' },
+  })
+  assert.equal(regional.REQUESTY_API_KEY, 'saved-requesty-key')
+  assert.equal(regional.OPENAI_AUTH_HEADER_VALUE, 'saved-auth-secret')
+  assert.equal(regional.ANTHROPIC_CUSTOM_HEADERS, 'X-Requesty-Auth: saved-header-secret')
+
+  // A profile saved for its own non-canonical URL keeps the auth it was saved
+  // with when relaunched there, matching profile apply.
+  const ownProxy = await buildStartupEnvFromProfile({
+    persisted: profile('openai', {
+      ...persisted.env,
+      OPENAI_BASE_URL: 'https://requesty-proxy.example/v1',
+      OPENAI_API_KEY: undefined,
+      REQUESTY_API_KEY: undefined,
+    }),
+    processEnv: {},
+  })
+  assert.equal(ownProxy.OPENAI_AUTH_HEADER_VALUE, 'saved-auth-secret')
+  assert.equal(ownProxy.ANTHROPIC_CUSTOM_HEADERS, 'X-Requesty-Auth: saved-header-secret')
+})

src/utils/providerProfile.ts

@@ -2275,6 +2275,18 @@ export async function buildLaunchEnv(options: {
     (persistedEnv.CLAUDE_CODE_PROVIDER_ROUTE_ID === 'runcrate' ||
       resolveRouteIdFromBaseUrl(persistedOpenAIBaseUrl) === 'runcrate') &&
     !isSameConfiguredEndpoint(env.OPENAI_BASE_URL, persistedOpenAIBaseUrl)
+  // Requesty supports custom auth headers, so its saved credential can also
+  // ride in the custom-auth trio or custom headers. Those belong to the
+  // endpoint the profile was saved for: a shell retarget away from it drops
+  // them, while a saved non-canonical profile relaunched at its own URL keeps
+  // them, matching profile apply.
+  const shellRetargetedRequestyProfile =
+    retargetedRequestyProfile &&
+    !isSameConfiguredEndpoint(env.OPENAI_BASE_URL, persistedOpenAIBaseUrl)
+  // Saved profiles whose credentials must not follow a shell URL retarget on
+  // any channel: generic key, custom-auth trio, or custom headers.
+  const retargetedCredentialBoundProfile =
+    retargetedRuncrateProfile || shellRetargetedRequestyProfile
   // A profile-applied Runcrate key also rides in the generic alias, and a pane
   // can inherit it. Only a shell credential without Runcrate's managed marker
   // may follow a retarget.
@@ -2376,10 +2388,10 @@ export async function buildLaunchEnv(options: {
     isNoncanonicalMergeGatewayLaunch ||
     isNoncanonicalCommandcodeLaunch ||
     isNoncanonicalApiRouteLaunch
-  if (isNoncanonicalDedicatedOpenAILaunch || retargetedRuncrateProfile) {
+  if (isNoncanonicalDedicatedOpenAILaunch || retargetedCredentialBoundProfile) {
     delete env.OPENAI_API_KEY
     delete env.OPENAI_API_KEYS
-    if (retargetedRuncrateProfile) {
+    if (retargetedCredentialBoundProfile) {
       // A retargeted launch keeps no identity for the endpoint it now points
       // at, so only the explicit shell credential may follow it.
       const shellCredential = resolveOpenAICredentialEnvSelection(shellCredentialSource)
@@ -2402,7 +2414,7 @@ export async function buildLaunchEnv(options: {
         env[persistedCredential.envVar] = persistedCredential.value
       }
     }
-    if (retargetedRuncrateProfile) {
+    if (retargetedCredentialBoundProfile) {
       // A retargeted launch keeps no saved custom-auth trio: it belongs to the
       // endpoint the profile was saved for. Provenance comes from the marker a
       // profile application wrote, not from the values themselves: the saved
@@ -2766,9 +2778,10 @@ export async function buildLaunchEnv(options: {
   // and is sent on every request. So an ambient value must be withheld from a
   // non-canonical aimlapi/apismart launch exactly like the API key and the
   // custom-auth trio; only headers the profile itself persisted are restored.
-  // A retargeted Runcrate launch keeps no headers either: both ambient and
-  // persisted values belong to the endpoint the profile was saved for.
-  const customHeaders = retargetedRuncrateProfile
+  // A retargeted Runcrate or Requesty launch keeps no headers either: both
+  // ambient and persisted values belong to the endpoint the profile was saved
+  // for.
+  const customHeaders = retargetedCredentialBoundProfile
     ? undefined
     : isNoncanonicalDedicatedOpenAILaunch
       ? persistedCustomHeaders