/resume command: single quotes break on Windows, clipboard copy has newline

Bug Description

The /resume command has two issues on Windows that make the generated command fail when pasted:

Issue 1: Single quotes instead of double quotes

The CLI outputs:

cd 'C:\Users\...\path with spaces' && claude --resume <session-id>

On Windows (cmd/PowerShell), single quotes do not handle spaces in paths. It should use double quotes:

cd "C:\Users\...\path with spaces" && claude --resume <session-id>

Issue 2: Clipboard copy contains a newline

The command is auto-copied to clipboard, but it contains a newline character that splits the command into two lines on paste. This causes only the cd part to run — the claude --resume part is on a new line and either fails or runs as a separate command.

Expected behavior

• Use double quotes for paths on Windows
• Clipboard copy should be a true one-liner with no embedded newline

Platform

• Windows 11
• Shell: cmd / PowerShell