Keymap filter — match a key by its modifiers (find "bare key, no modifiers")

When you set the Keymap search to Filter Type: Key Binding and type a key, it does a plain text match — so typing G returns bare G plus Cmd-G , Ctrl-G , Alt-Cmd-G , Shift-Ctrl-Alt-Cmd-G … all jumbled together. There's no way to ask below questions:

• "What's bound to G on its own , with no modifiers ?" (e.g. to find a free key)
• "Show me every binding on G , whatever the modifiers." (to spot conflicts)

Proposed: add a small Modifiers mode next to the Key-Binding filter:

• Exact — match only the modifier combo entered. Type a bare key → see only modifier-free bindings.
• Ignore modifiers — match the key regardless of modifiers.

Keep today's text-search as the default so nothing changes for existing users. Bonus: let the field capture a real keypress instead of typed text.

Why it's small: every shortcut already stores its key + Ctrl/Shift/Alt/Cmd separately — this is just exposing that in the filter, not new data.

Use cases: finding a free key before rebinding · auditing what one physical key does · hunting bare-key conflicts · tablet / one-handed / accessibility users who avoid modifier chords.

Mockup is shown below: