Change the default behavior of all commands to debug

[lynzrand]

• Related issues: Default all subcommands to use Debug mode #1151
• PR kind: Feature

Closes #1151

Summary

As said, this PR will unify the default behavior of all subcommands of moon to debug, except for moon bench and moon bundle which will remain in release mode.

This PR also changes the behavior of debug information to emit by default, irrelevant of the debug/release flag set, and only disabled upon --strip.

Metadata

• Tests added/updated for bug fixes or new features
• Compatible with Windows/Linux/macOS

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
crates/moon/tests/test_cases/moon_test/mod.rs	95% smaller
crates/moon/tests/test_cases/packages/mod.rs	92% smaller
crates/moon/tests/test_cases/dummy_core/mod.rs	90% smaller
crates/moon/tests/test_cases/backend_config/mod.rs	89% smaller
crates/moon/tests/test_cases/mod.rs	83% smaller
crates/moon/tests/test_cases/moon_commands/mod.rs	82% smaller
crates/moon/tests/test_cases/virtual_pkg_dep/mod.rs	77% smaller
crates/moon/tests/test_cases/extra_flags/mod.rs	76% smaller
crates/moon/tests/test_cases/target_backend/mod.rs	74% smaller
crates/moon/tests/test_cases/targets/mod.rs	72% smaller
crates/moon/tests/test_cases/warns/mod.rs	70% smaller
crates/moonrun/tests/test.rs	32% smaller
crates/moon/tests/test_cases/backend/mod.rs	28% smaller
crates/moon/src/cli/info.rs	23% smaller
crates/moon/src/cli/test.rs	6% smaller
crates/moon/src/cli/check.rs	3% smaller
crates/moon/src/cli.rs	0% smaller
crates/moon/src/cli/bench.rs	0% smaller
crates/moon/src/cli/build.rs	0% smaller
crates/moon/src/cli/bundle.rs	0% smaller
crates/moon/src/cli/doc.rs	0% smaller
crates/moon/src/cli/run.rs	0% smaller
crates/moon/tests/test_cases/cond_comp.in/moon.test	Unsupported file format
crates/moon/tests/test_cases/design/mod.rs	0% smaller
crates/moon/tests/test_cases/moon_build_package.in/moon.test	Unsupported file format
crates/moon/tests/test_cases/moon_bundle/mod.rs	0% smaller
crates/moon/tests/test_cases/output_format/mod.rs	0% smaller
crates/moon/tests/test_cases/prebuild_config_script/mod.rs	0% smaller
crates/moon/tests/test_cases/specify_source_dir_001.in/moon.test	Unsupported file format
crates/moon/tests/test_cases/test_dot_source.in/moon.test	Unsupported file format
docs/manual-zh/src/commands.md	Unsupported file format
docs/manual/src/commands.md	Unsupported file format

[Copilot]

Pull Request Overview

This pull request changes the default build mode from "release" to "debug" across various commands in the MoonBit build system. The change affects the output directory structure, compiler flags, and test expectations throughout the codebase.

Key changes:

• Default build mode changed from release to debug for most commands except bundle
• Build artifacts now output to target/<backend>/debug/ instead of target/<backend>/release/ by default
• Debug information (-g) and source maps are now enabled by default
• Optimization level defaults to -O0 (no optimization) for debug builds
• Updated documentation to reflect new flag descriptions

Reviewed Changes

Copilot reviewed 31 out of 32 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
docs/manual/src/commands.md	Updated command-line flag descriptions for debug/release/strip options
docs/manual-zh/src/commands.md	Chinese version of documentation updates
crates/moon/src/cli/*.rs	Updated default build behavior for run, test, doc, info, bundle commands
crates/moon/tests/test_cases/**/mod.rs	Updated test expectations to use debug paths instead of release paths
crates/moonrun/tests/test.rs	Updated test expectations for debug build paths

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[Copilot]

The -g flag appears twice in the compiler command line (once from the default debug flags and once from the extra flags). While not causing errors, this duplication is redundant and could be confusing. Consider deduplicating flags in the command builder to avoid repetition.