Log panel settings changes with a redacted old-to-new diff

[lancepioch]

Settings::save() now snapshots the loaded environment before writing .env and logs a settings:update event carrying only the keys that actually changed, as old-to-new pairs. Keys matching *SECRET*/*PASSWORD*/*TOKEN*/*_KEY are masked, and a save that changes nothing logs nothing. The CLI p:environment:* commands stay unaudited for now.

W11's settings-to-database work can carry the logging over when it rewrites save(). Part of W6 (security & audit).

[coderabbitai]

📝 Walkthrough

Walkthrough

The settings save flow now records changed environment values as activity events. It normalizes values, excludes unchanged keys, redacts secret-like values, adds English activity text, and tests the resulting event data.

Changes

Settings activity logging

Layer / File(s)	Summary
Settings diff and activity event app/Filament/Admin/Pages/Settings.php, lang/en/activity.php	The save flow compares environment values before writing, normalizes changed values, redacts secret-like keys, and logs a settings:update activity event. English pluralized activity text was added.
Activity logging validation tests/Filament/Admin/SettingsTest.php	The test verifies the activity event, changed settings, password redaction, and absence of the plaintext password.

Sequence Diagram(s)

sequenceDiagram
  participant Admin
  participant Settings
  participant Environment
  participant Activity
  Admin->>Settings: Save panel settings
  Settings->>Environment: Read current values
  Environment-->>Settings: Return current values
  Settings->>Environment: Write updated values
  Settings->>Activity: Log settings:update with redacted changes
  Activity-->>Admin: Record settings activity

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Priority: ➖ Normal

Merge Risk: 🟡 Moderate · up to f601b

In deployments using cached configuration, unchanged settings can generate incorrect audit events. Use a snapshot source that reflects the environment file before merging.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 66.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
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.
Description check	✅ Passed	The description accurately explains the settings audit event, changed-key diff, secret redaction, no-op behavior, and CLI scope.
Title check	✅ Passed	The title clearly and concisely describes logging panel settings changes with a redacted old-to-new diff.

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Actionable comments posted: 1

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Inline comments:
In `@app/Filament/Admin/Pages/Settings.php`:
- Line 1023: Update buildSettingsDiff() to obtain the old setting value from a
cached-configuration-safe snapshot source, such as the environment file, instead
of calling env($key). Preserve correct comparison and save() audit behavior for
keys defined only in .env, including unchanged non-null form values.

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ℹ️ Review info

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Configuration used: Repository UI

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📥 Commits

Reviewing files that changed from the base of the PR and between fdb519e and f601bac.

📒 Files selected for processing (3)

• app/Filament/Admin/Pages/Settings.php
• lang/en/activity.php
• tests/Filament/Admin/SettingsTest.php

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