chore: debug logging & env var for log level

[dacbd]

Summary by CodeRabbit

• New Features

  • Log level can now be configured using the CTRLC_LOG_LEVEL environment variable for more flexible control over logging verbosity.

• Improvements

  • Enhanced debug logging during AWS network synchronization to capture region, VPC, and subnet metadata.

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[coderabbitai]

📝 Walkthrough

Walkthrough

This PR adds environment variable support for the log-level flag configuration using a new helper function and introduces debug logging to record region and VPC metadata during AWS network synchronization processing.

Changes

Cohort / File(s)	Summary
Log-level environment configuration cmd/ctrlc/root/root.go	Added defaultOrEnv() helper function to enable environment variable override of the log-level flag default. The CTRLC_LOG_LEVEL environment variable is now checked, falling back to "info" if unset.
AWS network debug logging cmd/ctrlc/root/sync/aws/networks/networks.go	Added debug log entry in processNetwork() to record region, VPC name, VPC ID, and subnet count metadata after network setup.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• aws/az network scans #26 — Introduced the processNetwork() function that this PR now augments with additional debug logging.
• fix: Add additional logging context to aws network sync #44 — Previously added AWS region/context logging to the same networks file, establishing the logging pattern extended here.

Suggested reviewers

• zacharyblasczyk

Poem

🐰 Hopping through configs with environ in sight,
A flag now reads env vars with delight,
Debug logs spring forth to light the AWS way,
With region and VPC secrets on display! 🌿

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main changes: adding debug logging and environment variable support for log level configuration.

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✨ Finishing touches

• 📝 Generate docstrings

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