feat: admin audit log

[eclectic-coding]

Summary

• Adds solid_queue_web_audit_events table via opt-in install generator (rails generate solid_queue_web:install:migrations)
• Records every discard, retry, queue pause, and resume with action, actor, job class, queue name, and item count
• Actor identity captured via the optional SolidQueueWeb.current_actor config block (evaluated in controller context)
• GET /jobs/audit — paginated audit log with action/actor/queue filters, clickable actor/queue links, and CSV export
• "Audit" link added to the main nav
• Audit events seeded in the dummy app dev database

Audited actions

Action	Trigger
job_discarded	Single job discarded from the jobs list
jobs_discarded	Bulk or selection discard
failed_job_retried	Single failed job retried
failed_jobs_retried	Bulk or selection retry
failed_job_discarded	Single failed job discarded
failed_jobs_discarded	Bulk or selection discard of failed jobs
queue_paused	Queue paused
queue_resumed	Queue resumed

Test plan

• 15 request specs for AuditController (empty state, row rendering, action/actor/queue filters, clear link, invalid filter ignored, CSV, auth)
• 12 request specs for audit recording across all action controllers (single vs. bulk, correct action names, actor stored from current_actor block, nil actor when unconfigured)
• Full suite green: 382 examples, 0 failures

Closes #63

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 69.33333% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 97.22%. Comparing base (309aaf2) to head (f6a6376).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...rs/solid_queue_web/install/migrations_generator.rb	0.00%	20 Missing ⚠️
...trollers/solid_queue_web/application_controller.rb	62.50%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #78      +/-   ##
===========================================
- Coverage   100.00%   97.22%   -2.78%     
===========================================
  Files           34       37       +3     
  Lines          755      830      +75     
===========================================
+ Hits           755      807      +52     
- Misses           0       23      +23     

Files with missing lines	Coverage Δ
...pp/controllers/solid_queue_web/audit_controller.rb	100.00% <100.00%> (ø)
...lid_queue_web/failed_jobs/selections_controller.rb	100.00% <100.00%> (ø)
...trollers/solid_queue_web/failed_jobs_controller.rb	100.00% <100.00%> (ø)
...lers/solid_queue_web/jobs/selections_controller.rb	100.00% <100.00%> (ø)
app/controllers/solid_queue_web/jobs_controller.rb	100.00% <100.00%> (ø)
...ollers/solid_queue_web/queues/pauses_controller.rb	100.00% <100.00%> (ø)
...rs/solid_queue_web/retry_failed_jobs_controller.rb	100.00% <100.00%> (ø)
app/models/solid_queue_web/audit_event.rb	100.00% <100.00%> (ø)
lib/solid_queue_web.rb	100.00% <100.00%> (ø)
...trollers/solid_queue_web/application_controller.rb	90.32% <62.50%> (-9.68%)	⬇️
... and 1 more

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