diff --git a/src/auth/credential-surface.test.ts b/src/auth/credential-surface.test.ts
new file mode 100644
index 000000000..e59b30e14
--- /dev/null
+++ b/src/auth/credential-surface.test.ts
@@ -0,0 +1,44 @@
+import { describe, expect, test } from "bun:test";
+import { join } from "node:path";
+import { buildCredentialPatterns } from "./credential-surface.js";
+
+// CL-7929: the .lock/.tmp sidecar legs matched any directory, so a
+// workspace settings file (e.g. .vscode/settings.json.lock) denied as a
+// credential. They are scoped to the settings dir like the .bak legs.
+describe("credential sidecar scoping (CL-7929)", () => {
+  test("workspace-path decoys do not deny", () => {
+    const patterns = buildCredentialPatterns();
+    const decoys = [
+      join("project", ".vscode", "settings.json.lock"),
+      join("project", "settings.json.12345.tmp"),
+      join("project", "settings.json.12345.1.tmp"),
+      join("project", ".vscode", "permissions.json.lock"),
+      join("project", "permissions.json.999.1.tmp"),
+    ];
+    for (const decoy of decoys) {
+      expect(
+        patterns.some((pattern) => pattern.test(decoy)),
+        `${decoy} must not match the credential denylist`,
+      ).toBe(false);
+    }
+  });
+
+  test("settings-dir sidecars still deny", () => {
+    const patterns = buildCredentialPatterns();
+    const home = join("/tmp", "cl7929-never-created");
+    const deny = [
+      join(home, ".corbits", "settings.json.lock"),
+      join(home, ".corbits", "settings.json.12345.1.tmp"),
+      join(home, ".corbits", "permissions.json.lock"),
+      join(home, ".corbits", "permissions.json.12345.1.tmp"),
+      join(home, ".corbits", "codex-auth.json.lock"),
+      join(home, ".corbits", "xai-auth.json.12345.1.tmp"),
+    ];
+    for (const path of deny) {
+      expect(
+        patterns.some((pattern) => pattern.test(path)),
+        `${path} must match the credential denylist`,
+      ).toBe(true);
+    }
+  });
+});
diff --git a/src/auth/credential-surface.ts b/src/auth/credential-surface.ts
index b79fe2e25..b76c75b31 100644
--- a/src/auth/credential-surface.ts
+++ b/src/auth/credential-surface.ts
@@ -63,11 +63,11 @@ export function buildCredentialPatterns(): RegExp[] {
     patterns.push(new RegExp(`(^|\\/)${dir}\\/${base}~$`));
     patterns.push(new RegExp(`(^|\\/)${dir}\\/${base}\\.swp$`));
     patterns.push(new RegExp(`(^|\\/)${dir}\\/\\.${base}\\.swp$`));
-    patterns.push(new RegExp(`(^|\\/)${base}\\.lock$`));
+    patterns.push(new RegExp(`(^|\\/)${dir}\\/${base}\\.lock$`));
     // Writers emit a pid.counter middle segment (auth/store.ts,
     // mcp/auth-store.ts), so the middle segment is required; a bare
     // `<base>.tmp` has no known writer and stays unmatched.
-    patterns.push(new RegExp(`(^|\\/)${base}\\.[^/]*\\.tmp$`));
+    patterns.push(new RegExp(`(^|\\/)${dir}\\/${base}\\.[^/]*\\.tmp$`));
   }
   return patterns;
 }
diff --git a/src/config/index.ts b/src/config/index.ts
index 4ae9a2e66..00765f766 100644
--- a/src/config/index.ts
+++ b/src/config/index.ts
@@ -1154,6 +1154,21 @@ export async function loadConfig(
 // (there is no logout/disconnect surface or auth-store watcher; refresh
 // runs on connect, prefetch, and startup), so removal takes effect on the
 // next rebuild, not live.
+// Compare a settings-row baseURL against the OAuth endpoint so a
+// proxy/mirror row is never mistaken for the legacy bare-row duplicate.
+// Normalization failures fall back to a trailing-slash-insensitive compare
+// rather than dropping a row whose URL cannot be parsed.
+function sameEndpoint(raw: string | undefined, oauthBaseURL: string): boolean {
+  if (raw === undefined) return false;
+  const normalized = (value: string): string => {
+    try {
+      return normalizeOpenAICompatibleBaseURL(value);
+    } catch {
+      return value.trim().replace(/\/+$/, "");
+    }
+  };
+  return normalized(raw) === normalized(oauthBaseURL);
+}
 export function mergeOAuthCatalog(
   settings: Settings | null,
   resolved: ResolvedProvider,
@@ -1166,10 +1181,18 @@ export function mergeOAuthCatalog(
   // connect key) reads as a second, separately-added provider next to the
   // credential-backed `<kind>/<profile>` entries. Drop it once that family
   // has a live profile; when nothing is connected the bare row is the only
-  // ChatGPT/Grok access and stays.
+  // ChatGPT/Grok access and stays. A bare row pointed at a different
+  // endpoint (proxy/mirror) is a distinct provider, not the legacy
+  // duplicate, so it stays alongside the credential-backed entries.
   const dropBare = new Set([
-    ...(codexEntries.length > 0 ? ["codex"] : []),
-    ...(xaiEntries.length > 0 ? ["xai"] : []),
+    ...(codexEntries.length > 0 &&
+    sameEndpoint(settings?.providers["codex"]?.baseURL, CODEX_BASE_URL)
+      ? ["codex"]
+      : []),
+    ...(xaiEntries.length > 0 &&
+    sameEndpoint(settings?.providers["xai"]?.baseURL, XAI_BASE_URL)
+      ? ["xai"]
+      : []),
   ]);
   return [
     ...buildProviderCatalog(settings, resolved).filter(
diff --git a/src/config/oauth-catalog.test.ts b/src/config/oauth-catalog.test.ts
index 7efd74bc5..fb0356931 100644
--- a/src/config/oauth-catalog.test.ts
+++ b/src/config/oauth-catalog.test.ts
@@ -1,6 +1,8 @@
 import { describe, expect, test } from "bun:test";
 import type { CodexProfile } from "../auth/codex/store.js";
+import { CODEX_BASE_URL } from "../auth/codex/constants.js";
 import type { XaiProfile } from "../auth/xai/store.js";
+import { XAI_BASE_URL } from "../auth/xai/constants.js";
 import { mergeOAuthCatalog } from "./index.js";
 import type {
   ProviderSettings,
@@ -11,6 +13,10 @@ import type {
 // Regression tests for CL-5606: after a successful ChatGPT browser login the
 // merged catalog must not list a separately-added legacy bare `codex` row
 // alongside the credential-backed `codex/<profile>` entry.
+//
+// CL-7929: the drop only applies when the bare row points at the OAuth
+// endpoint. A bare row pointed at a proxy/mirror is a distinct provider and
+// stays alongside the credential-backed entries.
 
 const resolved: ResolvedProvider = {
   providerName: "openai",
@@ -23,11 +29,16 @@ function settingsWith(providers: Record<string, ProviderSettings>): Settings {
   return { providers } as Settings;
 }
 
-const entry = (): ProviderSettings => ({
-  baseURL: "https://chatgpt.com/backend-api/codex/responses",
+const codexEntry = (): ProviderSettings => ({
+  baseURL: CODEX_BASE_URL,
   models: ["gpt-5.1-codex-max"],
 });
 
+const xaiEntry = (): ProviderSettings => ({
+  baseURL: XAI_BASE_URL,
+  models: ["grok-4-1"],
+});
+
 const codexDefault: CodexProfile = {
   name: "default",
   tokens: { access: "codex-access", refresh: "r", expiresAt: 1 },
@@ -42,7 +53,7 @@ const xaiWork: XaiProfile = {
 describe("mergeOAuthCatalog legacy bare-row dedupe (CL-5606)", () => {
   test("a legacy bare codex row is dropped once codex/default is connected", () => {
     const merged = mergeOAuthCatalog(
-      settingsWith({ codex: entry(), "codex/default": entry() }),
+      settingsWith({ codex: codexEntry(), "codex/default": codexEntry() }),
       resolved,
       [codexDefault],
       [],
@@ -52,7 +63,7 @@ describe("mergeOAuthCatalog legacy bare-row dedupe (CL-5606)", () => {
 
   test("a legacy bare xai row is dropped once xai/work is connected", () => {
     const merged = mergeOAuthCatalog(
-      settingsWith({ xai: entry() }),
+      settingsWith({ xai: xaiEntry() }),
       resolved,
       [],
       [xaiWork],
@@ -64,7 +75,7 @@ describe("mergeOAuthCatalog legacy bare-row dedupe (CL-5606)", () => {
     // Not connected: no auth-store profile and no qualified entry. The legacy
     // single-instance row is the only ChatGPT access — keep it.
     const merged = mergeOAuthCatalog(
-      settingsWith({ codex: entry() }),
+      settingsWith({ codex: codexEntry() }),
       resolved,
       [],
       [],
@@ -80,7 +91,7 @@ describe("mergeOAuthCatalog legacy bare-row dedupe (CL-5606)", () => {
           apiKey: "sk-test",
           models: ["gpt-5"],
         },
-        codex: entry(),
+        codex: codexEntry(),
       }),
       resolved,
       [codexDefault],
@@ -88,4 +99,36 @@ describe("mergeOAuthCatalog legacy bare-row dedupe (CL-5606)", () => {
     );
     expect(merged.map((p) => p.name)).toEqual(["openai", "codex/default"]);
   });
+
+  test("a bare codex row pointed at a proxy survives alongside codex/default (CL-7929)", () => {
+    const merged = mergeOAuthCatalog(
+      settingsWith({
+        codex: {
+          baseURL: "https://proxy.example.com/v1",
+          apiKey: "sk-proxy",
+          models: ["gpt-5.1-codex-max"],
+        },
+      }),
+      resolved,
+      [codexDefault],
+      [],
+    );
+    expect(merged.map((p) => p.name)).toEqual(["codex", "codex/default"]);
+  });
+
+  test("a bare xai row pointed at a mirror survives alongside xai/work (CL-7929)", () => {
+    const merged = mergeOAuthCatalog(
+      settingsWith({
+        xai: {
+          baseURL: "https://mirror.example.com/v1",
+          apiKey: "sk-mirror",
+          models: ["grok-4-1"],
+        },
+      }),
+      resolved,
+      [],
+      [xaiWork],
+    );
+    expect(merged.map((p) => p.name)).toEqual(["xai", "xai/work"]);
+  });
 });