[core] Change "arg"/"cmd" to "argument"/"command" + Change "args" from argv to "tokens"

[forfudan]

This PR standardizes ArgMojo terminology by expanding abbreviations (arg→argument, cmd→command) and renaming “argv/args” concepts to “tokens” where they refer to raw CLI token streams. It updates core APIs and then propagates the naming changes through tests, docs, and examples.

Changes:

• Rename builder/declarative identifiers and APIs (e.g., Command.args→Command.arguments, Parsable.parse_args→Parsable.parse_arguments).
• Rename “unknown args” handling to “unknown arguments” (ParseResult.get_unknown_arguments()), and adjust callers/tests/docs.
• Update parsing internals/docs to use “tokens” for raw CLI input (including argv() output), and refresh related documentation.

[Copilot]

Pull request overview

This PR standardizes ArgMojo terminology by expanding abbreviations (arg→argument, cmd→command) and renaming “argv/args” concepts to “tokens” where they refer to raw CLI token streams. It updates core APIs and then propagates the naming changes through tests, docs, and examples.

Changes:

• Rename builder/declarative identifiers and APIs (e.g., Command.args→Command.arguments, Parsable.parse_args→Parsable.parse_arguments).
• Rename “unknown args” handling to “unknown arguments” (ParseResult.get_unknown_arguments()), and adjust callers/tests/docs.
• Update parsing internals/docs to use “tokens” for raw CLI input (including argv() output), and refresh related documentation.

Reviewed changes

Copilot reviewed 20 out of 21 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tests/test_subcommands_declarative.mojo	Updates local variables and declarative parsing helper usage to command / parse_arguments.
tests/test_subcommands.mojo	Updates subcommand argument list access from .args to .arguments and local variable naming.
tests/test_schema_validation.mojo	Updates Command.arguments usage and parse_arguments naming.
tests/test_parse.mojo	Updates unknown-collection API usage to get_unknown_arguments().
tests/test_options.mojo	Renames positional “cmd” field to “command” and updates unknown-collection API usage.
tests/test_interactive.mojo	Renames cmd locals and updates .args→.arguments loops.
tests/test_hybrid.mojo	Updates hybrid examples/tests to command naming and parse_arguments naming.
tests/test_help.mojo	Updates internal color field name expectations (_argument_color) and .arguments usage.
tests/test_declarative.mojo	Updates declarative tests to .arguments and parse_arguments.
tests/test_completion.mojo	Aligns typo-subcommand tests with new error-message behavior (no inline “Did you mean”).
src/argmojo/utils.mojo	Clarifies _help_line_width() docstring to match its clamping/fallback behavior.
src/argmojo/parse_result.mojo	Renames unknown tracking field/method to _unknown_arguments / get_unknown_arguments().
src/argmojo/parsable.mojo	Renames parse_args→parse_arguments, and shifts local naming to command/arguments.
src/argmojo/command.mojo	Broad rename: args→arguments, raw CLI inputs to tokens, and related helper/method renames.
src/argmojo/argument_wrappers.mojo	Renames trait/method parameters from cmd→command and local arg→argument.
pixi.toml	Updates task scripts (but currently introduces a shell line-continuation issue with set -e).
examples/mgit.mojo	Propagates cmd→command naming through example builder code.
docs/user_manual.md	Updates examples/tables to new API and ANSI code representation; updates unknown-collection API name.
docs/declarative_api_planning.md	Updates planning doc examples to new command / parse_arguments naming.
docs/argmojo_overall_planning.md	Updates planning doc references to get_unknown_arguments() and command naming.
README.md	Updates hybrid bridge example and method table wording to parse_arguments / command.

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[Copilot]

Pull request overview

Copilot reviewed 20 out of 21 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (1)

pixi.toml:33

• The test task script starts with set -e\ which line-continues into the next command. In bash, this turns into set -e pixi run format ..., which changes positional parameters instead of executing the test commands, so the task will not actually run the suite as intended. Put set -e on its own line (no trailing \) / ensure the multi-line string is structured so subsequent commands are separate shell statements.

test = """ set -e\
    pixi run format \
    && pixi run package \
    && mojo run -I src -D ASSERT=all tests/test_parse.mojo \
    && mojo run -I src -D ASSERT=all tests/test_options.mojo \

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[Copilot]

Pull request overview

Copilot reviewed 20 out of 21 changed files in this pull request and generated 2 comments.

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