Feature: Numbered Bookmark Quick Access (Cmd+R Cmd+B 1-9)

[couimet]

Summary

Direct navigation to bookmarks by index using numbered keybindings.

Parent Issue

Part of #160 (RangeLink Bookmarks) - Future Enhancement

Blocked By

• Feature: Bookmark Default Keybindings #167 (Bookmark Default Keybindings)

Keybindings

Keybinding	Action
`Cmd+R Cmd+B 1`	Navigate to bookmark #1
`Cmd+R Cmd+B 2`	Navigate to bookmark #2
...	...
`Cmd+R Cmd+B 9`	Navigate to bookmark #9

Acceptance Criteria

• Commands rangelink.openBookmark1 through rangelink.openBookmark9
• Keybindings in package.json
• Show index numbers in QuickPick (e.g., 1. CLAUDE.md Instructions)
• Handle missing indices gracefully (bookmark Fix errors on repo and improve coverage #5 doesn't exist → show message)
• Sorting determines index assignment (most recent = Fix: Marketplace logo displays broken link instead of image #1)

Technical Approach

{
  "command": "rangelink.openBookmark1",
  "key": "ctrl+r ctrl+b 1",
  "mac": "cmd+r cmd+b 1"
}

Or use command arguments:

{
  "command": "rangelink.openBookmarkByIndex",
  "args": { "index": 1 },
  "key": "ctrl+r ctrl+b 1",
  "mac": "cmd+r cmd+b 1"
}

Priority

Low - QuickPick is sufficient for most users; this is for power users