fix(agents): detect and warn on ANTHROPIC_BASE_URL override in ~/.claude/settings.json

.ai-run/guides/usage/project-config.md

@@ -193,6 +193,31 @@ codemie profile delete <name>          # Delete a profile
 
 ---
 
+## Claude Code ANTHROPIC_BASE_URL Override
+
+Claude Code reads `~/.claude/settings.json` at startup. If that file contains an
+`ANTHROPIC_BASE_URL` key under the `env` block, Claude Code uses it instead of any
+environment variable.
+
+```json
+{
+  "env": {
+    "ANTHROPIC_BASE_URL": "https://your-proxy.example.com"
+  }
+}
+```
+
+`codemie-code` detects this at startup and prints a visible warning showing:
+- **Profile URL** — the URL the active profile tried to inject
+- **Active URL** — the settings.json URL that will actually be used
+
+**Precedence chain (highest wins):**
+`~/.claude/settings.json` > `env.ANTHROPIC_BASE_URL` (codemie-code profile)
+
+To avoid silent overrides: remove `ANTHROPIC_BASE_URL` from `~/.claude/settings.json`.
+
+---
+
 ## Troubleshooting
 
 | Symptom | Cause | Fix |