[log] add debug logging to 5 Go packages

[github-actions]

Adds logger.New(...) declarations and meaningful log.Printf/log.Print calls to 5 previously unlogged files across the workflow, parser, and cli packages.

Files changed

• pkg/workflow/model_identifier.go — logs identifier parse entry, which branch is taken (provider-scoped, glob, bare name), query param count, and final result
• pkg/workflow/model_aliases.go — logs import/frontmatter layer merge counts and final alias map size
• pkg/workflow/heredoc_validation.go — logs delimiter validation attempts and detected injection attempts
• pkg/parser/sub_agent_extractor.go — logs extraction entry, marker count, duplicate detection, per-agent extraction, and completion summary
• pkg/cli/experiments_analyze_statistics.go — logs analysis entry, degenerate-case short-circuit, chi-square balance result, and final recommendation

Logger naming convention

All loggers follow the "pkg:filename" convention already used in the codebase:

• modelIdentifierLog = logger.New("workflow:model_identifier")
• modelAliasesLog = logger.New("workflow:model_aliases")
• heredocLog = logger.New("workflow:heredoc_validation")
• subAgentLog = logger.New("parser:sub_agent_extractor")
• experimentsStatsLog = logger.New("cli:experiments_statistics")

Testing

make build fails in this environment due to a pre-existing Go toolchain version constraint (go.mod requires 1.25.8, environment has 1.24.13). The changes are purely additive (new logger var + Printf calls), follow patterns used in hundreds of other files in the codebase, and do not alter any logic paths.

Generated by Go Logger Enhancement · ● 1.6M · ◷

• expires on May 6, 2026, 4:44 AM UTC