fix(proxy): parse proxy creds with URL-reserved chars (e.g. '#') correctly

The residential proxy password contains a '#', which urlparse() misreads as a
URL fragment and corrupts the port (ValueError: Port could not be cast...).
Parse scheme://creds@host:port manually and percent-decode user/pass so both
raw ('#') and encoded ('%23') passwords work. Verified against the live
credential.

scripts/workers/services/telecom/undetected_browser.py

@@ -110,19 +110,36 @@ def _proxy_config(proxy_env: str = "UNDETECTED_PROXY_URL") -> dict | None:
     if not url:
         return None
 
-    # Playwright's proxy dict supports: server, username, password, bypass
-    from urllib.parse import urlparse
+    # Parse manually so credentials may contain URL-reserved characters such
+    # as '#', '@', ':' or '/'. urlparse() chokes on those (e.g. a '#' in the
+    # password is misread as a fragment, corrupting the port), so we split the
+    # ``scheme://creds@host:port`` shape ourselves and percent-decode the
+    # username/password. The password may be stored raw OR percent-encoded
+    # (e.g. '#' as '%23') in the env — unquote() handles both.
+    from urllib.parse import unquote
 
-    parsed = urlparse(url)
-    server = f"{parsed.scheme}://{parsed.hostname}"
-    if parsed.port:
-        server += f":{parsed.port}"
+    rest = url
+    scheme = ""
+    if "://" in rest:
+        scheme, rest = rest.split("://", 1)
 
-    cfg: dict = {"server": server}
-    if parsed.username:
-        cfg["username"] = parsed.username
-    if parsed.password:
-        cfg["password"] = parsed.password
+    creds = ""
+    hostport = rest
+    if "@" in rest:
+        # rsplit so an '@' inside the password doesn't split the host off early
+        creds, hostport = rest.rsplit("@", 1)
+
+    cfg: dict = {"server": f"{scheme}://{hostport}" if scheme else hostport}
+
+    if creds:
+        if ":" in creds:
+            user, pw = creds.split(":", 1)
+        else:
+            user, pw = creds, ""
+        if user:
+            cfg["username"] = unquote(user)
+        if pw:
+            cfg["password"] = unquote(pw)
     return cfg