Extract CommonOptions, composed by analysis-running commands

[fain182]

Improvement

Q	A
New Feature	no
BC Break	no
Issue	Prepares #648 and #649

Summary

First step of a three-PR series toward the *-baseline command family (#648, #649): a pure refactoring of check, with no behavior change.

The upcoming generate-baseline and prune-baseline commands need the same --config, --target-php-version, --autoload and --ignore-baseline-linenumbers options as check. Defining them per command would let names, shortcuts, defaults and parsing drift apart, so they move to CommonOptions, a collaborator each command composes: addTo() defines the options in configure(), and typed readers (configFilePath(), targetPhpVersion(), …) parse them from the InputInterface.

CommonOptions also owns requireAutoload(), the behavior attached to its autoload option — the require_once side effect stays in the command layer, out of the unit-testable handlers.

Composition is deliberate (no base command class, no trait): commands keep their flat structure and the shared surface is an explicit object.

check's --help output is identical apart from option ordering; the whole test suite passes unchanged.

Series: this PR → add generate-baseline as a new command while keeping the old flag working (#648, additive) → turn check --generate-baseline into a fail-fast pointer to the new command (#648, the only BC-breaking step, isolated for discussion).

🤖 Generated with Claude Code

https://claude.ai/code/session_015K1TKiwtwkW7twBCTz758P

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.29%. Comparing base (47201fd) to head (1508839).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #655      +/-   ##
============================================
+ Coverage     98.28%   98.29%   +0.01%     
- Complexity      719      724       +5     
============================================
  Files            89       90       +1     
  Lines          2038     2050      +12     
============================================
+ Hits           2003     2015      +12     
  Misses           35       35              

Files with missing lines	Coverage Δ
src/CLI/Command/Check.php	100.00% <100.00%> (ø)
src/CLI/Command/CommonOptions.php	100.00% <100.00%> (ø)

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