fix: copy ctx.params to avoid mutating shared dict in get_cli_args

[sentry]

In main.py, ctx.obj["cli_args"] = ctx.params was aliasing the dictionary instead of copying it. Subcommand calls to get_cli_args mutate ctx.obj["cli_args"] directly via args.update(...) and del args["token"], mutating the shared dictionary across subcommands and causing unexpected state such as KeyError: 'token'. Using dict(ctx.params) decouples cli_args from the parent context parameters.

Fixes CLI-HY

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[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
723	1	722	1

View the full list of 1 ❄️ flaky test(s)

api.temp.calculator.test_calculator::test_divide

Flake rate in main: 100.00% (Passed 0 times, Failed 1726 times)

Stack Traces | 0.001s run time

def
                test_divide():
                > assert Calculator.divide(1, 2) == 0.5
                E assert 1.0 == 0.5
                E + where 1.0 = <function Calculator.divide at 0x104c9eb90>(1, 2)
                E + where <function Calculator.divide at 0x104c9eb90> = Calculator.divide
                .../temp/calculator/test_calculator.py:30: AssertionError

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