feat: UI polish sprint — 7 items + logs toolbar redesign (#365)

* feat: UI polish sprint — tag filters, toast tokens, logs toolbar, billing portal, editor UX

- Fleet: replace inline tag pills with multi-select combobox dropdown
- Toast: remap all notification colors to oklch design tokens
- Logs: convert floating hover toolbar to permanent pinned toolbar,
  replace all hardcoded colors with design tokens for theme support
- Audit: fix dropdown scroll-lock (modal=false), light theme button contrast
- Resources: remove redundant inner border/bg on tab wrapper
- Editor: add ⌘K/Ctrl+K shortcut hint and handler, standardize button heights
- Billing: signed Lemon Squeezy portal URLs via sencho.io proxy for all tiers
- New MultiSelectCombobox UI component

* feat(editor): replace button row with split-button dropdown

Replace three separate editor buttons (Discard, Save Only, Save & Deploy)
with a compact split-button dropdown. Primary action is "Save & Deploy";
chevron opens dropdown with "Save Only" and "Discard Changes" options.

CHANGELOG.md

@@ -16,14 +16,24 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 * **stacks:** bulk `/api/stacks/statuses` endpoint — fetches all stack statuses in a single Docker API call instead of N individual `docker compose ps` invocations. Falls back to per-stack queries for remote nodes on older versions.
+* **fleet:** tag filter dropdown — replaced inline pills with a multi-select combobox for cleaner filtering
+* **editor:** ⌘K / Ctrl+K keyboard shortcut to focus the sidebar stack search
+* **billing:** signed Lemon Squeezy Customer Portal URLs — "Billing" button now opens an auto-authenticated portal session via the sencho.io proxy, available for all license tiers
 
 ### Fixed
 
 * **stacks:** sidebar status indicators showing "--" (unknown) after stopping a stack instead of "DN". Root cause was a race condition where `refreshStacks` queried container state before Docker had fully transitioned containers.
+* **logs:** toolbar (search, filters, actions) was a hover-only floating bar that could disappear — now a permanent pinned toolbar always visible at the top
+* **logs:** replaced all hardcoded colors with design tokens for proper light/dark theme support
+* **audit:** Export dropdown caused toolbar to scroll out of view due to Radix scroll-locking (`modal={false}` fix)
+* **audit:** light theme button contrast — outline buttons were invisible due to `--input` matching `--background`
+* **toast:** notification colors used hardcoded Tailwind values instead of oklch design tokens
+* **editor:** button row (Discard / Save Only / Save & Deploy) had inconsistent heights across variants
 
 ### Changed
 
 * **stacks:** stack actions (deploy, stop, restart, update) are now tracked per-stack instead of globally. Users can fire actions on multiple stacks concurrently without the UI blocking. Sidebar shows a spinner per stack during in-flight actions.
+* **resources:** removed redundant inner border and background on tab navigation wrapper
 
 ## [0.34.0](https://github.com/AnsoCode/Sencho/compare/v0.33.1...v0.34.0) (2026-04-03)