fix: resolve merge conflicts and lint issues

- Merge origin/main changes (flattened buy/sell commands, --doc flag, aliases)
- Fix spinner placement for buy/sell commands
- Fix duplicate alias key 'p' in canonical subcommands
- Remove unused mypy ignore comments in spot_client.py
- Fix nested with statements in tests

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/coinhunter/cli.py

@@ -10,8 +10,19 @@ from . import __version__
 from .audit import read_audit_log
 from .binance.spot_client import SpotBinanceClient
 from .config import ensure_init_files, get_binance_credentials, load_config
-from .runtime import get_runtime_paths, install_shell_completion, print_output, self_upgrade, with_spinner
-from .services import account_service, market_service, opportunity_service, trade_service
+from .runtime import (
+    get_runtime_paths,
+    install_shell_completion,
+    print_output,
+    self_upgrade,
+    with_spinner,
+)
+from .services import (
+    account_service,
+    market_service,
+    opportunity_service,
+    trade_service,
+)
 
 EPILOG = """\
 examples:
@@ -294,7 +305,6 @@ _CANONICAL_SUBCOMMANDS = {
     "t": "tickers",
     "k": "klines",
     "pf": "portfolio",
-    "p": "portfolio",
 }
 
 _COMMANDS_WITH_SUBCOMMANDS = {"account", "market", "opportunity"}