chore(go): Apply go fix ./... automated cleanup

[shivasurya]

Description:

• Applied the revamped go fix ./... command across the entire sast-engine module
• 87 files updated with automated code fixes (net -108 lines)
• No functional changes — purely mechanical cleanup by the Go toolchain

Checklist:

• Tests passing (gradle testGo)?
• Lint passing (golangci-lint run this requires golangci-lint)?

🤖 Generated with Claude Code

[safedep]

SafeDep Report Summary

No dependency changes detected. Nothing to scan.

_{This report is generated by SafeDep Github App}

[github-actions]

Code Pathfinder Security Scan

No security issues detected.

Metric	Value
Files Scanned	87
Rules	38

---

_{Powered by Code Pathfinder}

[codecov]

Codecov Report

❌ Patch coverage is 88.73563% with 49 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.54%. Comparing base (94279cf) to head (3a63753).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
sast-engine/cmd/scan.go	19.23%	21 Missing ⚠️
sast-engine/graph/callgraph/builder/builder.go	65.21%	7 Missing and 1 partial ⚠️
sast-engine/mcp/tools.go	91.76%	7 Missing ⚠️
sast-engine/cmd/ci.go	85.00%	3 Missing ⚠️
sast-engine/graph/parser_docker.go	62.50%	2 Missing and 1 partial ⚠️
sast-engine/dsl/variable_matcher.go	50.00%	1 Missing and 1 partial ⚠️
...-engine/graph/callgraph/analysis/taint/analyzer.go	80.00%	1 Missing and 1 partial ⚠️
sast-engine/graph/callgraph/patterns/detector.go	60.00%	1 Missing and 1 partial ⚠️
sast-engine/graph/parser_golang.go	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #550      +/-   ##
==========================================
- Coverage   82.57%   82.54%   -0.04%     
==========================================
  Files         139      139              
  Lines       17079    17000      -79     
==========================================
- Hits        14103    14032      -71     
+ Misses       2433     2427       -6     
+ Partials      543      541       -2     

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