Fix: Add configurable line wrapping for chat

[evanliu048]

Issue #, if available:
Q cli currently applies automatic line wrapping at ~80 characters regardless of output destination if cannot obtain current terminal width, which causes issues in non-interactive workflows. When output is piped or redirected, the forced line breaks make it difficult to process the text programmatically and ignore explicit user formatting requests (e.g., "write in a single line").
For example

Description of changes:
Added a --wrap-mode option with three modes:

• auto (default): Wraps for terminal display, no wrapping for pipes/files
• always: Always wrap at terminal width
• never: Never wrap output

The default auto mode follows Unix conventions by detecting if stdout is a terminal, providing readable output for interactive use while preserving raw format for automation.

Usage

# Default behavior (auto-detect)
q chat --no-interactive "text"           # Terminal: wraps
q chat --no-interactive "text" | cat     # Pipe: no wrapping

# Explicit control
q chat --no-interactive --wrap=never "text"
q chat --w always

Wrap mode = never

Testing

Tested with various output destinations (terminal, pipe, file redirection) to ensure correct behavior in each mode.

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