refactor: rename update command to upgrade

- Align CLI verb with pipx/pip terminology (`pipx upgrade`).
- Rename internal `self_update` to `self_upgrade` for consistency.
- Update README and tests accordingly.
- Bump version to 2.0.4.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -91,11 +91,11 @@ coinhunter opportunity portfolio
 coinhunter opportunity scan
 coinhunter opportunity scan --symbols BTCUSDT ETHUSDT SOLUSDT
 
-# Self-update
-coinhunter update
+# Self-upgrade
+coinhunter upgrade
 ```
 
-`update` will try `pipx upgrade coinhunter` first, and fall back to `pip install --upgrade coinhunter` if pipx is not available.
+`upgrade` will try `pipx upgrade coinhunter` first, and fall back to `pip install --upgrade coinhunter` if pipx is not available.
 
 ## Architecture
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "coinhunter"
-version = "2.0.3"
+version = "2.0.4"
 description = "Binance-first trading CLI for balances, market data, opportunity scanning, and execution."
 readme = "README.md"
 license = {text = "MIT"}

src/coinhunter/cli.py

@@ -10,7 +10,7 @@ from . import __version__
 from .binance.spot_client import SpotBinanceClient
 from .binance.um_futures_client import UMFuturesClient
 from .config import ensure_init_files, get_binance_credentials, load_config
-from .runtime import get_runtime_paths, print_output, self_update
+from .runtime import get_runtime_paths, print_output, self_upgrade
 from .services import account_service, market_service, opportunity_service, trade_service
 
 EPILOG = """\
@@ -22,7 +22,7 @@ examples:
   coinhunter trade spot buy BTCUSDT -q 100 -d
   coinhunter trade futures sell BTCUSDT -q 0.01 -r
   coinhunter opportunity scan -s BTCUSDT ETHUSDT
-  coinhunter update
+  coinhunter upgrade
 """
 
 
@@ -120,7 +120,7 @@ def build_parser() -> argparse.ArgumentParser:
     scan_parser = opportunity_subparsers.add_parser("scan", help="Scan market for opportunities")
     scan_parser.add_argument("-s", "--symbols", nargs="*", metavar="SYM", help="Restrict scan to specific symbols")
 
-    subparsers.add_parser("update", help="Upgrade coinhunter to the latest version")
+    subparsers.add_parser("upgrade", help="Upgrade coinhunter to the latest version")
 
     return parser
 
@@ -258,8 +258,8 @@ def main(argv: list[str] | None = None) -> int:
                 return 0
             parser.error("opportunity requires `portfolio` or `scan`")
 
-        if args.command == "update":
-            print_output(self_update(), agent=args.agent)
+        if args.command == "upgrade":
+            print_output(self_upgrade(), agent=args.agent)
             return 0
 
         parser.error(f"Unsupported command {args.command}")

src/coinhunter/runtime.py

@@ -58,7 +58,7 @@ def print_json(payload: Any) -> None:
     print(json.dumps(payload, ensure_ascii=False, indent=2, sort_keys=True, default=json_default))
 
 
-def self_update() -> dict[str, Any]:
+def self_upgrade() -> dict[str, Any]:
     if shutil.which("pipx"):
         cmd = ["pipx", "upgrade", "coinhunter"]
     else:

tests/test_cli.py

@@ -37,11 +37,11 @@ class CLITestCase(unittest.TestCase):
         self.assertEqual(result, 1)
         self.assertIn("error: boom", stderr.getvalue())
 
-    def test_update_dispatches(self):
+    def test_upgrade_dispatches(self):
         captured = {}
-        with patch.object(cli, "self_update", return_value={"command": "pipx upgrade coinhunter", "returncode": 0}), patch.object(
+        with patch.object(cli, "self_upgrade", return_value={"command": "pipx upgrade coinhunter", "returncode": 0}), patch.object(
             cli, "print_output", side_effect=lambda payload, **kwargs: captured.setdefault("payload", payload)
         ):
-            result = cli.main(["update"])
+            result = cli.main(["upgrade"])
         self.assertEqual(result, 0)
         self.assertEqual(captured["payload"]["returncode"], 0)