feat(continuity): support cross-profile continuity inheritance from account profiles

tests/unit/copilot/copilot-executor-env.test.ts

@@ -0,0 +1,26 @@
+import { describe, expect, it } from 'bun:test';
+import { generateCopilotEnv } from '../../../src/copilot/copilot-executor';
+import type { CopilotConfig } from '../../../src/config/unified-config-types';
+
+const baseConfig: CopilotConfig = {
+  enabled: true,
+  auto_start: false,
+  port: 4141,
+  account_type: 'individual',
+  rate_limit: null,
+  wait_on_limit: true,
+  model: 'gpt-4.1',
+};
+
+describe('generateCopilotEnv', () => {
+  it('includes inherited CLAUDE_CONFIG_DIR when provided', () => {
+    const env = generateCopilotEnv(baseConfig, '/tmp/.ccs/instances/pro');
+    expect(env.CLAUDE_CONFIG_DIR).toBe('/tmp/.ccs/instances/pro');
+  });
+
+  it('omits CLAUDE_CONFIG_DIR when inheritance is not configured', () => {
+    const env = generateCopilotEnv(baseConfig);
+    expect(env.CLAUDE_CONFIG_DIR).toBeUndefined();
+  });
+});
+