Hotfix Linux: Different kill mechanism

[ArneTR]

We have seen runs having multiple kW which was due to truncation in the output of the CPU utilization stream

https://github.com/green-coding-solutions/argopy/actions/runs/13259456675

This hotfix kills the process more gracefully and thus truncation should not occur.

Greptile Summary

This PR modifies the process termination mechanism in setup.sh to address an issue where truncated CPU utilization data was causing incorrect energy measurements in the kWh range.

• Replaces recursive kill_tree function with pkill -SIGTERM for Linux CPU monitoring termination
• Keeps original kill_tree function for macOS process termination
• Fixes critical bug where truncated CPU utilization output led to inflated energy measurements
• Provides more graceful process termination to prevent data corruption during measurement collection

[github-actions]

Old Energy Estimation

Eco-CI Output:

Label	🖥 avg. CPU utilization [%]	🔋 Total Energy [Joules]	🔌 avg. Power [Watts]	Duration [Seconds]
Total Run (incl. overhead)	6.88917	32.4853	2.27	14.31
No quotes allowed in labels	11.65	7.3688	2.46	3.00
(Soo this is something) echo SHELL	7.58	9.56247	3.08	3.10
Environment setup (OS ubuntu-20.04, lint)	3.66	7.86485	2.56	3.07
No quotes allowed in labels	3.43333	7.68921	2.50	3.08

🌳 CO2 Data:
City: Washington, Lat: 38.7095, Lon: -78.1539
IP: 40.76.183.113
CO₂ from energy is: 0.014293400 g
CO₂ from manufacturing (embodied carbon) is: 0.004082841 g
Carbon Intensity for this location: 440 gCO₂eq/kWh
SCI: 0.018376 gCO₂eq / pipeline run emitted

---

Total cost of whole PR so far:

[github-actions]

Old Energy Estimation

Eco-CI Output:

Label	🖥 avg. CPU utilization [%]	🔋 Total Energy [Joules]	🔌 avg. Power [Watts]	Duration [Seconds]
Total Run (incl. overhead)	6.96833	33.9793	2.43	14.00
No quotes allowed in labels	9.305	7.20817	2.58	2.79
(Soo this is something) echo SHELL	8.71	9.50589	3.07	3.10
Environment setup (OS ubuntu-24.04, lint)	4.09333	8.8817	2.90	3.06
No quotes allowed in labels	3.58667	8.38356	2.73	3.07

🌳 CO2 Data:
City: Boydton, Lat: 36.6676, Lon: -78.3875
IP: 20.57.71.205
CO₂ from energy is: 0.014950760 g
CO₂ from manufacturing (embodied carbon) is: 0.003994393 g
Carbon Intensity for this location: 440 gCO₂eq/kWh
SCI: 0.018945 gCO₂eq / pipeline run emitted

---

Total cost of whole PR so far:

[github-actions]

Old Energy Estimation

Eco-CI Output:

Label	🖥 avg. CPU utilization [%]	🔋 Total Energy [Joules]	🔌 avg. Power [Watts]	Duration [Seconds]
Total Run (incl. overhead)	4.87917	31.1729	2.08	15.00
No quotes allowed in labels	8.425	6.37569	2.21	2.89
(Soo this is something) echo SHELL	4.9	9.6111	3.11	3.09
Environment setup (OS ubuntu-22.04, lint)	2.02	7.33759	2.40	3.06
No quotes allowed in labels	2.52333	7.84853	2.56	3.07

🌳 CO2 Data:
City: San Jose, Lat: 37.3388, Lon: -121.8916
IP: 52.238.27.205
CO₂ from energy is: 0.008634644 g
CO₂ from manufacturing (embodied carbon) is: 0.004279707 g
Carbon Intensity for this location: 277 gCO₂eq/kWh
SCI: 0.012914 gCO₂eq / pipeline run emitted

---

Total cost of whole PR so far:

[github-actions]

Old Energy Estimation

Eco-CI Output:

Label	🖥 avg. CPU utilization [%]	🔋 Total Energy [Joules]	🔌 avg. Power [Watts]	Duration [Seconds]
Total Run (incl. overhead)	10.5	31.884	2.09	15.27
No quotes allowed in labels	23	4.90654	1.72	2.86
(Soo this is something) echo SHELL	11.5	8.97363	2.68	3.35
Environment setup (OS macos-14, lint)	6	8.96506	2.79	3.21
No quotes allowed in labels	6	9.03873	2.71	3.34

🌳 CO2 Data:
City: , Lat: , Lon:
IP:
CO₂ from energy is: 0.016037652 g
CO₂ from manufacturing (embodied carbon) is: 0.006246290 g
Carbon Intensity for this location: 503 gCO₂eq/kWh
SCI: 0.022284 gCO₂eq / pipeline run emitted

---

Total cost of whole PR so far:

[github-actions]

Eco-CI Output:

Label	🖥 avg. CPU utilization [%]	🔋 Total Energy [Joules]	🔌 avg. Power [Watts]	Duration [Seconds]
Total Run (incl. overhead)	18.5	189.826	11.27	16.84
No quotes allowed in labels	40	31.6338	9.85	3.21
(Soo this is something) echo SHELL	11	50.522	14.27	3.54
Environment setup (OS macos-13, lint)	14.5	54.2763	15.92	3.41
No quotes allowed in labels	19.5	53.3935	15.48	3.45

🌳 CO2 Data:
City: San Antonio, Lat: 29.4227, Lon: -98.4927
IP: 13.105.117.9
CO₂ from energy is: 0.095482478 g
CO₂ from manufacturing (embodied carbon) is: 0.036044521 g
Carbon Intensity for this location: 503 gCO₂eq/kWh
SCI: 0.131527 gCO₂eq / pipeline run emitted

---

Total cost of whole PR so far:

[greptile-apps]

LGTM

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