Add metric snapshots admin

[JoaquinBN]

Registers MetricSnapshot in Django admin as a read-only view. Adds list columns, filters, search, and date navigation so metric refresh snapshots can be inspected from production admin without changing snapshot data.

Summary by CodeRabbit

• New Features

  • Added admin access for metric snapshots with a streamlined view for browsing records.
  • Enabled sorting, filtering, searching, and date-based navigation in the admin list.

• Bug Fixes

  • Restricted metric snapshot management in the admin to view-only access, preventing unintended edits, additions, or deletions.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: f198c24b-3669-411d-bc0a-3eb3a2ec088f

📥 Commits

Reviewing files that changed from the base of the PR and between e71352c and efd5b59.

📒 Files selected for processing (1)

• backend/api/admin.py

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📝 Walkthrough

Walkthrough

Adds a Django admin module that registers MetricSnapshot and configures it as a view-only admin listing with display, filtering, search, ordering, date hierarchy, read-only fields, disabled actions, and denied add/delete permissions.

Changes

MetricSnapshot admin

Layer / File(s)	Summary
Read-only admin registration backend/api/admin.py	Registers MetricSnapshot in Django admin and configures list display, filters, search, ordering, date hierarchy, read-only fields, disabled actions, and denied add/delete permissions.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Add metric snapshots admin' accurately and concisely describes the main change: registering MetricSnapshot in Django admin with appropriate configurations.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch JoaquinBN/fix-network-metrics

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