fix(cors): use explicit origins instead of wildcard

When allow_credentials=True, browsers reject wildcard (*) origins.
Added specific allowed origins for Tatlock domains.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/shared/config.py

@@ -36,8 +36,15 @@ class Settings(BaseSettings):
     host: str = "0.0.0.0"
     port: int = 8083
 
-    # CORS
-    cors_origins: list[str] = ["*"]
+    # CORS - Note: When cors_credentials is True, cannot use "*" for origins
+    # Set CORS_ORIGINS env var to override (comma-separated list)
+    cors_origins: list[str] = [
+        "https://home.schweitz.net",
+        "https://tatlock.schweitz.net",
+        "http://localhost:8080",
+        "http://localhost:3000",
+        "http://127.0.0.1:8080",
+    ]
     cors_credentials: bool = True
     cors_methods: list[str] = ["*"]
     cors_headers: list[str] = ["*"]