Update claude-companion to v1.3.0 (what its got: a lot) (#167)

* claude-companion: v1.3.0 — headless aggregator, user settings, sessions panel

Catalog-side update for lowcache/claude-companion, from 1.0.1 to 1.3.0.

Architecture: the pulse aggregator moved out of the bar widget into a headless
[[service]] (pulse-svc.luau). Capture no longer depends on the bar dot being
placed — the service starts with the shell and listens regardless of surfaces,
retiring the plugin's old "pulse must sit on a bar" deployment invariant. The bar
widget and desktop orb are now independent subscribers of the claude.pulse
rollup, rendering only. Noctalia 5 beta also fixed the older limitation where bar
widgets did not receive state.watch callbacks, so the bar dot is event-driven
like the orb; both docs are updated accordingly.

New: a `sessions` panel on right-click of the pulse (left-click still opens the
answer panel) — one row per live session with state, model and token burn, plus a
Retire control for a session whose SessionEnd hook never fired and which would
otherwise sit at idle indefinitely. It introduces no new IPC verb: only the
trailing `session` payload field is read for routing, so `session_end` with
`,,,,,<sid>` is already a well-formed single-session retire. PROTOCOL.md now
documents that property so any adapter can use it. Session ids are allowlisted
before reaching a shell command.

New: three animation settings (breath_speed, pulse_glow_floor, orb_swell), each
declaring an explicit `step` — an omitted step defaults to 1.0 in the manifest
parser, which collapses a fractional range to a couple of preset stops instead of
a slider.

plugin_api stays at 3. Everything used here is ungated at that level, and the
contributing guidance is to raise it only when adopting a capability from a newer
level. Verified against the installed build rather than assumed.

Also ships tests/manifest_spec.py, which pins the settings contract: every
numeric setting must declare an explicit step finer than its range, defaults must
land on a step boundary, label/description must use the *_key form, and every key
must resolve in translations/en.json. Neither the linter nor a widget spec can
catch a bad step, which is how the slider bug shipped in the first place.

Validated: catalog validator 54/54 exit 0, its own 54 self-tests pass, and the
plugin's suite (5 luau + shim + manifest) is green. Live-tested on niri against
Noctalia 5 beta; the compositor shim is unchanged in this update.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* claude-companion: tint the sessions retire control, fix singular header

Follow-up on the v1.3.0 submission from live review: the retire button carried no
variant and rendered at the background colour; a single session read "1 sessions".
The panel root stays unfilled by design — noctalia panels are translucent under
the glass style, so the backdrop is the shell's, not the plugin's.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: lowcache <drawpdeadredd@gmail.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

claude-companion/hooks/pulse-emit

@@ -12,13 +12,13 @@
 # Without one it sends a bare event, which lands in the widget's shared
 # "default" test slot — fine for a poke, wrong for a real integration.
 #
-# Env: PULSE_TARGET  plugin dispatch id (default lowcache/claude-companion:pulse)
+# Env: PULSE_TARGET  plugin dispatch id (default lowcache/claude-companion:pulse-svc)
 #      PULSE_DRYRUN  non-empty -> print the command instead of dispatching
 #
 # Fail-open by contract: exits 0 no matter what, output swallowed, dispatch
 # capped at 3 s. A hook must never block or error the agent driving it.
 
-TARGET="${PULSE_TARGET:-lowcache/claude-companion:pulse}"
+TARGET="${PULSE_TARGET:-lowcache/claude-companion:pulse-svc}"
 event="${1:-idle}"
 session="$2"