[log] log: add debug logging to 5 Go files across workflow and cli packages

[github-actions]

Add meaningful debug log statements to 5 Go files that previously had no observability in key functions.

Changes

• pkg/workflow/safe_outputs_config_helpers.go: Added safeOutputsConfigGenLog.Printf(...) to generateTargetConfigWithRepos — new function from the latest cross-repo target_repo commit that had no logging
• pkg/workflow/lock_schema.go: Added two lockSchemaLog.Printf(...) calls to GenerateLockMetadata — logs schema version/strict/stopTime on entry, and logs when compiler version is embedded in release builds
• pkg/workflow/github_tool_to_toolset.go: Added githubToolToToolsetLog.Printf(...) at the end of init() — reports how many tool-to-toolset mappings were loaded from the embedded JSON (the logger was declared but never called)
• pkg/workflow/compiler_yaml_ai_execution.go: Added compilerYamlLog.Printf(...) to generateEngineExecutionSteps — logs engine ID and step count, consistent with other generateX functions in the same file
• pkg/cli/codemod_github_app.go: Added githubAppCodemodLog.Print(...) before each return true in hasDeprecatedAppField — identifies which frontmatter section contains the deprecated app: field

Test plan

• make build passes with no errors
• go test ./pkg/workflow/... ./pkg/cli/... passes (all tests green)
• No new log calls compute values or cause side effects — all arguments are simple field reads or len() calls

🤖 Generated with [Claude Code]((claude.com/redacted)

Generated by Go Logger Enhancement · ◷

• expires on Mar 19, 2026, 8:37 PM UTC