🧹 Code Health: Improve catch block typing in web-fetch.ts

[TrueAlpha-spiral]

🎯 What: The code health issue addressed
Changed catch (e) to catch (error: unknown) and replaced the unsafe type assertion const error = e as Error; with the safer getErrorMessage(error) utility in packages/core/src/tools/web-fetch.ts.

💡 Why: How this improves maintainability
Explicitly typing the caught error as unknown and using the existing getErrorMessage utility prevents potential runtime errors if the thrown error is not an Error instance (e.g., a thrown string or object). This adheres to TypeScript best practices for error handling without sacrificing functionality.

✅ Verification: How you confirmed the change is safe

• Verified the code locally.
• Ran tests in packages/core workspace using npm test -w packages/core.
• Passed formatting tests.

✨ Result: The improvement achieved
Safer, more predictable error handling in the fallback logic of the WebFetchTool.

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PR created automatically by Jules for task 7832602433406661680 started by @TrueAlpha-spiral

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