feat(noctalia): add knowledge lookup panel

Provide a portable, cache-ignored Obsidian vault lookup plugin and bind it to Super+N.

.config/noctalia/10-base.toml

@@ -37,7 +37,7 @@ pure_black_dark = true
 # Noctalia merges files alphabetically. Keep reusable modules here; machine-specific
 # layout and hardware settings live in 90-machine.toml, while 99-extend.toml is local.
 [plugins]
-enabled = ["alex/system-status"]
+enabled = ["alex/system-status", "alex/knowledge-lookup"]@@ -53,0 +54,3 @@ type = "alex/system-status:inhibitors"
 
 [widget.cpu]
 type = "alex/system-status:cpu"

.config/noctalia/90-machine.toml##class.arch_desktop

@@ -1,7 +1,7 @@
 # Desktop-specific shell layout and hardware telemetry.
 # Pi Status Bridge is installed locally from ~/projects/pi-gui.
 [plugins]
-enabled = ["alex/system-status", "alex/pi-status-bridge"]
+enabled = ["alex/system-status", "alex/pi-status-bridge", "alex/knowledge-lookup"]
 
 [widget.pi-status]
 type = "alex/pi-status-bridge:bridge"