feat(desktop): consolidate declarative workstation profile

Capture desktop-specific system, session, Noctalia, and Pi integration alongside shared laptop support. Retire obsolete X11 configuration and make package ownership explicit for repeatable Decman deployments.
2026-08-24 20:20:58 +02:00
parent bfc5aa7933
commit ed063ab1fe
105 changed files with 1479 additions and 8826 deletions
@@ -0,0 +1,82 @@
+-- Read the tiny kernel meminfo pseudo-file every five seconds.  This avoids a
+-- resident helper process and reuses Noctalia's lightweight widget lifecycle.
+local command = [[awk '
+$1 == "MemTotal:" { total = $2 }
+$1 == "MemAvailable:" { available = $2 }
+$1 == "SwapTotal:" { swap_total = $2 }
+$1 == "SwapFree:" { swap_free = $2 }
+END {
+  if (!total || !available) exit 1
+  used = total - available
+  memory_used = used * 100 / total
+  if (swap_total > 0) {
+    swap_used = (swap_total - swap_free) * 100 / swap_total
+    printf "%.1f/%.1f GiB  S %.0f%%\t%.0f\t%.0f\n", used / 1048576, total / 1048576, swap_used, memory_used, swap_used
+  } else {
+    printf "%.1f/%.1f GiB  S —\t%.0f\t0\n", used / 1048576, total / 1048576, memory_used
+  }
+}' /proc/meminfo]]
+
+local request_in_flight = false
+
+local function colorForUsage(percent)
+  if percent >= 85 then
+    return "#ff453a" -- red
+  end
+  if percent >= 70 then
+    return "#ff8800" -- orange
+  end
+  if percent >= 50 then
+    return "#ffd60a" -- yellow
+  end
+  return "#ffffff" -- white
+end
+
+local function renderStatus(text, color)
+  barWidget.render(ui.row({ gap = 4, align = "center" }, {
+    ui.glyph({ name = "memory", size = 14, color = color }),
+    ui.label({ text = text, color = color }),
+  }))
+end
+
+function update()
+  noctalia.setUpdateInterval(5000)
+
+  if request_in_flight then
+    return
+  end
+
+  request_in_flight = true
+  noctalia.runAsync(command, function(result)
+    request_in_flight = false
+
+    if result.exitCode ~= 0 then
+      renderStatus("RAM —", "#fff1e6")
+      barWidget.setTooltip("Unable to read /proc/meminfo")
+      return
+    end
+
+    local text, memory_percent, swap_percent = string.match(
+      result.stdout,
+      "^([^\t]+)\t([%d.]+)\t([%d.]+)"
+    )
+    memory_percent = tonumber(memory_percent)
+    swap_percent = tonumber(swap_percent)
+
+    if text == nil or memory_percent == nil or swap_percent == nil then
+      renderStatus("RAM —", "#fff1e6")
+      barWidget.setTooltip("Unable to parse memory utilization")
+      return
+    end
+
+    local highest_usage = math.max(memory_percent, swap_percent)
+    renderStatus(text, colorForUsage(highest_usage))
+    barWidget.setTooltip(
+      string.format(
+        "RAM used / total · %.0f%% RAM · %.0f%% swap",
+        memory_percent,
+        swap_percent
+      )
+    )
+  end)
+end