KInfoCenter Sensors page fails to load due to missing lm-sensors dependency

[Jainil]

**1) Ubuntu Version**
Kubuntu 25.10 (development/testing release)

**2) What I expected to happen**
The Sensors page in KDE Info Center should automatically load hardware sensor information such as CPU temperature, fan speeds, and voltages.
If the required backend tool (`sensors` from lm-sensors) is missing, KInfoCenter should either:
- install it automatically, or
- show a helpful message explaining what package to install.

**3) What happened instead**
The Sensors page fails to load and shows the error:

"Could not load page content.
The sensors tool is required to display this page, but could not be found."

No guidance is provided, and the module is unusable.

**4) Cause**
The Sensors module in KInfoCenter depends on the `sensors` binary from the `lm-sensors` package.
However, the Ubuntu/Kubuntu packaging for `kinfocenter` does not install or recommend this dependency.

After manually installing:

    sudo apt install lm-sensors
    sudo sensors-detect

the Sensors page loads and works correctly.

This confirms the issue is caused by missing dependency handling in the package.

**5) Steps to reproduce**
1. Install a clean Kubuntu 25.10 system.
2. Open Info Center.
3. Go to Devices → Sensors.
4. Observe the error shown instead of sensor data.

**6) Why this is a bug**
The KInfoCenter Sensors module is non-functional out of the box on Kubuntu.
Because it requires a tool that is not installed by default, the page always fails unless the user manually installs lm-sensors.

This is a packaging oversight affecting all Kubuntu 25.10 installs using KDE Plasma 6.4.x.

**7) Suggested fix**
One of:
- Add `lm-sensors` as a Recommends/Depends for the `kinfocenter` package, OR
- Modify the module to prompt the user to install lm-sensors, OR
- Improve the error message with install instructions.

**8) System Information**
Operating System: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-7-generic (64-bit)
Graphics Platform: Wayland
CPU: 12th Gen Intel® Core™ i7-12700H (20 threads)
RAM: 16 GiB
GPU 1: Intel Iris Xe
GPU 2: NVIDIA GeForce RTX 3070 Laptop GPU
Laptop Model: HP OMEN by HP Laptop 16-b1xxx

**9) Additional info**
A screenshot of the error is attached.

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: kinfocenter 4:6.4.5-0ubuntu2
ProcVersionSignature: Ubuntu 6.17.0-7.7-generic 6.17.2
Uname: Linux 6.17.0-7-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Sun Nov 30 10:43:56 2025
InstallationDate: Installed on 2025-11-29 (1 days ago)
InstallationMedia: Kubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
SourcePackage: kinfocenter
UpgradeStatus: No upgrade log present (probably fresh install)