[codex] Share target help fragments

[WilliamK112]

Summary

• add shared target-help display fragments next to the target parser constants
• reuse those fragments in install, compile, deps update, and update help text
• keep command-specific guidance intact: install still documents apm config target, and compile still nudges users from deprecated --target all to --all
• pin the shared fragments with CLI consistency coverage

Context

Follow-up to #1821 and the review-panel observation that target help examples are maintained independently across commands. This keeps the visible target list and all expansion aligned with the canonical display order while preserving the newer install fallback chain wording from main and compile's --all deprecation UX.

Testing

• .venv/Scripts/python.exe -m pytest tests/unit/test_cli_consistency.py tests/unit/test_update_command.py::TestUpdateCommandLogic::test_dependency_update_help_lists_kiro_target_example tests/unit/core/test_target_detection.py::TestTargetParamType tests/unit/core/test_target_resolution_v2.py -q (96 passed)
• .venv/Scripts/python.exe -m pytest tests/unit/commands/test_update_command.py -q (53 passed)
• .venv/Scripts/ruff.exe check src/apm_cli/commands/compile/cli.py src/apm_cli/commands/deps/cli.py src/apm_cli/commands/install.py src/apm_cli/commands/update.py src/apm_cli/core/target_detection.py tests/unit/test_cli_consistency.py
• .venv/Scripts/ruff.exe format --check src/apm_cli/commands/compile/cli.py src/apm_cli/commands/deps/cli.py src/apm_cli/commands/install.py src/apm_cli/commands/update.py src/apm_cli/core/target_detection.py tests/unit/test_cli_consistency.py
• git diff --check origin/main..HEAD

[Copilot]

Pull request overview

This PR centralizes the user-facing --target help fragments in core/target_detection.py and reuses them across multiple CLI commands to prevent drift between the canonical target list, the 'all' expansion display, and per-command help text.

Changes:

• Introduces shared TARGET_HELP_* constants next to the canonical target ordering in target_detection.py.
• Replaces duplicated --target help strings in install, compile, deps update, and update with the shared fragments.
• Adds a CLI-consistency regression test to pin the shared fragments (including the install-only apm config target precedence note).

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/unit/test_cli_consistency.py	Adds a regression test that asserts --target help strings reuse the shared display fragments.
src/apm_cli/core/target_detection.py	Defines shared --target help fragments (TARGET_HELP_DETAILS, examples, and 'all' expansion text) based on canonical target order.
src/apm_cli/commands/update.py	Uses the shared example CSV in apm update --target help text.
src/apm_cli/commands/install.py	Replaces the long inline --target help string with TARGET_HELP_DETAILS plus install-specific notes.
src/apm_cli/commands/deps/cli.py	Replaces duplicated --target help text with TARGET_HELP_DETAILS plus deps-update-specific notes.
src/apm_cli/commands/compile/cli.py	Replaces duplicated --target help text with TARGET_HELP_DETAILS.