Add salemsayed/niri-active-workspace

[salemsayed]

Plugin

• Id: salemsayed/niri-active-workspace
• New plugin
• Update to an existing plugin (version bumped in plugin.toml)

What it does

A bar widget that shows only the workspace you are currently on, instead of a
pill listing every workspace.

The built-in workspaces widget always renders one slot per workspace. Under
niri that is worse than elsewhere, because niri always keeps a trailing empty
workspace, so the pill permanently carries at least one slot with nothing in it.
inactive_pill_size shrinks inactive slots but bottoms out at 0.25, so they
cannot be hidden. This widget renders a single label and moves the full list
into the tooltip.

The label is the workspace name, falling back to its index when unnamed. Left
click toggles the niri overview; scrolling moves between workspaces. The tooltip
lists every workspace on the same monitor with the focused one marked.

External dependencies

niri — declared in dependencies. The plugin API exposes no compositor state,
so all workspace data comes from niri's IPC. The widget spawns niri msg and
nothing else:

• niri msg --json workspaces — once at load, and again on a 60-second tick as
  a self-heal if the event stream dies.
• niri msg --json event-stream — one long-lived subscription. Only
  WorkspacesChanged and WorkspaceActivated are handled.
• niri msg action toggle-overview / focus-workspace-down /
  focus-workspace-up — only in response to a click or scroll.

No network access. No filesystem reads or writes. State is kept in memory.

Testing

Ran as a local path plugin source on a single-monitor niri session:

• Added the widget to the bar; confirmed it renders the focused workspace name
  and updates live when switching workspaces (verified against
  niri msg --json workspaces before and after).
• Confirmed the tooltip lists all workspaces with the focus marker.
• Exercised left click (overview) and scroll (workspace switching).
• Checked all four label_mode values and show_position.
• Confirmed the widget survives a plugin reload and that the 60-second
  re-snapshot path runs.

Not tested: multiple monitors. I only have one output. The widget resolves
its own connector via barWidget.outputName() (confirmed returning a real
connector on this setup) and selects the workspace that is is_active on that
output, falling back to the globally is_focused one when the connector is
unknown. On a single monitor those are the same workspace, so the divergent
branch is unexercised. Review of that path — or a quick check by someone with
two outputs — is welcome.

• Tested on Niri
• Tested on Hyprland
• Tested on Sway
• Tested on another compositor:
• Noctalia version tested against: v5.0.0 (856d99bbd199), package noctalia 5.0.0_beta.6-2
• Plugin API level: 3

Screenshots / Videos

The plugin card, which embeds a screenshot of the widget running in the bar —
the demo pill on the left is this widget, showing the focused workspace:

Checklist

• The directory name matches the part of id after the / in plugin.toml exactly.
• It ships plugin.toml, README.md, thumbnail.webp, and translations/en.json.
• README.md follows the
  README template, documents
  every entry id and dependency, and includes exact panel IPC commands and launcher prefixes where applicable.
• I created thumbnail.webp with the thumbnail generator.
• version follows semver and is bumped in this PR; plugin_api is the oldest API level this plugin requires.
• Every non-English translation in this PR uses a locale supported by Noctalia core, and I can read, write, and
  understand that language well enough to review and maintain it (no unreviewed machine/LLM translations).
• I did not edit catalog.toml; CI generates it.
• This PR touches exactly one plugin directory.

Code review attestation

• The code is readable and not obfuscated, minified, or generated.
• It does not download and execute remote code.
• Every network call, filesystem write, and spawned process is something the description above accounts for.
• I have the right to publish this code under the license declared in plugin.toml.