Add Windows console support - #140
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Preserve native console input event data for Windows consumers.
`IO#console_input_events` preserves records that the old size change helper discards.
Add cross-platform cursor visibility operations so console users can hide the cursor while redrawing without platform-specific code.
Expose virtual terminal processing and line wrapping flags so console users can configure output without calling Win32 APIs directly.
Add `IO#input_pending?` so console users can detect queued input without consuming it or relying on platform-specific APIs.
Add a `timeout` option to `IO#console_input_events` so callers can wait for input while remaining responsive to Ruby interrupts.
Expose Windows input constants for console event consumers.
Let JRuby use Reline's native Windows path without Fiddle.
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Summary
IO#console_input_eventswith interruptible timeout support and expose Windows input event constantsIO#input_pending?for non-consuming readiness checksIO#check_winsize_changed, which discards unrelated console input recordsMotivation
Reline currently implements several Windows console operations directly through Fiddle. Providing these operations in io-console gives console consumers one native abstraction across CRuby and JRuby, preserves input records while detecting resize events, and allows blocking console input waits to remain interruptible.
Validation
rake testwith Ruby 4.0: 33 tests, 133 assertions