---
id: NL-SPEC-F3E26F58
type: spec
title: Launcher popup
---

# Launcher popup

## Behavior

- The launcher presents one full-width result list without a duplicate preview or provider chips.
- It searches applications, actions, calculator results, clipboard rows, and windows.
- `=` selects calculator, `>` selects actions, and `clip ` selects clipboard.
- An unprefixed query searches all providers.
- Matching supports exact, prefix, word-boundary subsequence, loose subsequence, and substring results.
- Stronger matches rank first.
- Application rows show themed icons with a provider-glyph fallback; other providers use distinct glyphs.
- Rows show title and concise lowercase verb and subtitle metadata.
- Calculator results emphasize the computed value and copy it on activation.
- Empty queries list applications in title order.
- Up and down change selection; Enter activates the selected result.

## Constraints

- Calculator input accepts only the existing numeric operator grammar.
- Rejected or non-finite expressions produce no result.
- Usage records remain telemetry and do not affect ranking.
- Missing window or clipboard data contributes no rows and does not fail the launcher.
- Existing application, window, calculator, clipboard, and action routes retain their effects.
- Existing launcher IPC remains available and stable.
- Search responses expose functional state without view narration.

## Acceptance

- Pure checks prove prefix parsing, score ordering, subsequence matches, misses, calculator rejection, icons, provider filtering, and ranking.
- Runtime self-test passes.
- A live visual check confirms icons and fallbacks, all providers, calculator copying, and keyboard selection.
- The launcher has no decorative bottom stripe.