Remove custom providers from settings (#1951)

* feat(providers): remove custom providers from settings

Add a destructive removal flow so mistaken custom providers can be deleted from config.json instead of only disabled.

* test(app): cover provider removal with e2e

Move provider removal coverage out of mocked component tests and into the real Settings flow.

* fix(providers): keep removal live after config updates

packages/protocol/src/agent-types.ts

@@ -104,6 +104,7 @@ export interface ProviderSnapshotEntry {
   provider: AgentProvider;
   status: ProviderStatus;
   enabled: boolean;
+  source?: "builtin" | "custom";
   error?: string;
   models?: AgentModelDefinition[];
   modes?: AgentMode[];

packages/protocol/src/messages.checkout-pr-schema.test.ts

@@ -368,4 +368,18 @@ describe("checkout PR schemas", () => {
       projectAdd: true,
     });
   });
+
+  test("accepts the provider removal server_info feature flag", () => {
+    expect(
+      ServerInfoStatusPayloadSchema.parse({
+        status: "server_info",
+        serverId: "srv_test",
+        features: {
+          providerRemoval: true,
+        },
+      }).features,
+    ).toEqual({
+      providerRemoval: true,
+    });
+  });
 });

packages/protocol/src/messages.providers-snapshot.test.ts

@@ -38,6 +38,18 @@ describe("provider snapshot message schemas", () => {
     expect(parsed.enabled).toBe(true);
   });
 
+  test("preserves provider snapshot entry source", () => {
+    const parsed = ProviderSnapshotEntrySchema.parse({
+      provider: "gemini",
+      status: "ready",
+      enabled: true,
+      source: "custom",
+      label: "Gemini",
+    });
+
+    expect(parsed.source).toBe("custom");
+  });
+
   test("defaults missing enabled state in providers snapshot response entries", () => {
     const parsed = GetProvidersSnapshotResponseMessageSchema.parse({
       type: "get_providers_snapshot_response",

packages/protocol/src/messages.ts

@@ -163,6 +163,7 @@ export const MutableDaemonConfigPatchSchema = z
     providers: z
       .record(z.string(), MutableDaemonProviderConfigSchema.partial().passthrough())
       .optional(),
+    removeProviders: z.array(z.string().min(1)).optional(),
     metadataGeneration: MutableMetadataGenerationConfigSchema.partial().optional(),
     autoArchiveAfterMerge: z.boolean().optional(),
     enableTerminalAgentHooks: z.boolean().optional(),
@@ -263,6 +264,7 @@ export const ProviderSnapshotEntrySchema = z.object({
   provider: AgentProviderSchema,
   status: ProviderStatusSchema,
   enabled: z.boolean().optional().default(true),
+  source: z.enum(["builtin", "custom"]).optional(),
   error: z.string().optional(),
   models: z.array(AgentModelDefinitionSchema).optional(),
   modes: z.array(AgentModeSchema).optional(),
@@ -2471,6 +2473,8 @@ export const ServerInfoStatusPayloadSchema = z
         workspaceGithubRepositorySearch: z.boolean().optional(),
         // COMPAT(projectCreateDirectory): added in v0.1.108, remove gate after 2027-01-15.
         projectCreateDirectory: z.boolean().optional(),
+        // COMPAT(providerRemoval): added in v0.1.105, drop the gate when floor >= v0.1.105.
+        providerRemoval: z.boolean().optional(),
       })
       .optional(),
   })