https://linear.app/unleash/issue/2-2723/add-signals-tip
Adds a tip to the event timeline regarding the usage of signals.
The conditions for it to show up are the following:
- `!signalsSuggestionSeen` - The current user has not closed the tip yet
- `isEnterprise()` - The Unleash instance is an Enterprise instance
(signals are currently Enterprise-only)
- `isAdmin` - The current user is an admin (signals are currently
admin-only)
- `signalsEnabled` - The signals feature flag is currently enabled
- `!loading` - Signal endpoints have not finished loading (prevents
flickering)
- `signalEndpoints.length === 0` - The Unleash instance currently has
zero configured signal endpoints (signals feature is not being used)

https://linear.app/unleash/issue/2-2703/align-with-ux
Timeline UI/UX improvements after sync with UX, including:
- Added some spacing between each event in the grouping tooltip
- Aligned the x events occurred header with filter dropdown
- Improved the strategy icon somewhat so it doesn't look as off center
- New timeline icon
- Improve icon position relative to timestamp on each event in the
grouping tooltip
- Changed text color in dropdowns to a lighter gray
- Removed bold formatting in tooltip
- Adjusted paddings and margins
- Added close button
- Added shadow
- Added left border
There are a few details missing, which will be tackled in separate PRs.

---------
Co-authored-by: Nuno Góis <github@nunogois.com>
https://linear.app/unleash/issue/2-2665/show-signals-in-the-event-timeline
Implements signals in the event timeline.
This merges events and signals into a unified `TimelineEvent`
abstraction, streamlining the data structure to only include properties
relevant to the timeline.
Key changes:
- Refactors the timeline logic to handle both events and signals through
the new abstraction.
- Introduces the `useSignalQuery` hook, modeled after `useEventSearch`,
as both serve similar purposes, albeit for different resource types.
Note: The signals suggestion alert is not included and will be addressed
in a future task.

https://linear.app/unleash/issue/2-2700/persist-timeline-state-in-local-storage
Implements persistent state management for the event timeline using
local storage.
I believe this improves UX by persisting both the timeline toggle
(visibility) state and applied filters across page refreshes.
Includes some scouting/refactoring and some workarounds to prevent the
timeline from animating on page load (in most cases).
https://linear.app/unleash/issue/2-2664/implement-event-tooltips
Implements event tooltips in the new event timeline.
This leverages our current `feature-event-formatter-md` to provide both
a label and a summary of the event. Whenever our new `eventTimeline`
flag is enabled, we enrich our events in our event search endpoint with
this information. We've discussed different options here and reached the
conclusion that this is the best path forward for now. This way we are
being consistent, DRY, relatively performant and it also gives us a
happy path forward if we decide to scope in the event log revamp, since
this data will already be present there.
We also added a new `label` property to each of our event types
currently in our event formatter. This way we can have a concise,
human-readable name for each event type, instead of exposing the
internal event type string.
~~We also fixed the way the event formatter handled bold text (as in,
**bold**). Before, it was wrapping them in *single asterisks*, but now
we're using **double asterisks**. We also abstracted this away into a
helper method aptly named `bold`. Of course, this change meant that a
bunch of snapshots and tests needed to be updated.~~
~~This new `bold` method also makes it super easy to revert this
decision if we choose to, for any reason. However I believe we should
stick with markdown formatting, since it is the most commonly supported
formatting syntax, so I see this as an important fix. It's also in the
name of the formatter (`md`). I also believe bold was the original
intent. If we want italic formatting we should implement it separately
at a later point.~~
Edit: It was _bold_ of me to assume this would work out of the box on
Slack. It does when you manually try it on the app, but not when using
the Slack client. See: https://github.com/Unleash/unleash/pull/8222

