improve SSTTF script error handling

[harp-intel]

Error reading SSTTF configuration results in garbled output:

This PR adds/improves error handling in the collection scripts and the table values function.

[Copilot]

Pull Request Overview

This PR improves error handling in SSTTF (SST-TF) configuration scripts to prevent garbled output when errors occur. The changes add comprehensive error checking and validation to ensure the scripts fail gracefully with clear error messages rather than producing incorrect output.

• Added error handling and validation for pcm-tpmi command execution in SSTTF scripts
• Added numeric validation for script output values in table processing functions
• Implemented proper error reporting with descriptive messages to stderr

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
internal/script/script_defs.go	Added error handling and numeric validation for pcm-tpmi commands in SSTTFHP and SSTTFLP scripts
internal/report/table_defs.go	Added numeric validation for SSTTF table values with warning logging and graceful failure

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}