chore: holding pattern cost reduction (~56% monthly savings)

[JaminB]

Summary

• Adds "under active development" banner to all pages with link to GitHub repo
• Disables user registration (set via SSM — no code change needed)
• Shrinks all ECS task definitions to Fargate minimum (0.25 vCPU / 512 MB)
• Reduces Gunicorn/Celery concurrency to 1 to match smaller CPU
• Caps autoscaling max at 1 for api/ui/worker (prevents scale-out)

Cost impact

	Before	After
ECS compute	~$99/mo	~$36/mo
Aurora	~$44/mo	~$44/mo
Redis	~$13/mo	~$13/mo
ALB + misc	~$12/mo	~$12/mo
Total	~$168/mo	~$74/mo

Deploy steps

1. Merge this PR
2. cd terraform && terraform apply to resize ECS tasks and cap autoscaling
3. ECS will roll new task revisions automatically

Notes

• Worker/beat kept running (OAuth2 token refresh for GDrive/Dropbox connections)
• Registration already disabled in SSM — takes effect on next deploy
• Site remains fully functional; just slower under sustained load (acceptable for holding pattern)

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Added a development banner notice to the application interface, displayed beneath the top navigation with a link to the project repository.

• Chores

  • Adjusted ECS task resource allocation and modified auto-scaling configuration limits across services.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 8ee5ef8b-0b21-490d-9b92-98c85989b591

📥 Commits

Reviewing files that changed from the base of the PR and between 39a1c64 and b225d49.

📒 Files selected for processing (2)

• fileproxy/templates/base.html
• terraform/ecs.tf

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📝 Walkthrough

Walkthrough

This PR downscales a development environment by adding a visual indicator to the UI and reducing ECS task resources. The dev banner notifies users they are working in a development environment with a GitHub link, while infrastructure changes constrain CPU, memory, worker processes, and auto-scaling limits across all services to minimal levels.

Changes

Development Environment Configuration Downscale

Layer / File(s)	Summary
Development Environment Banner fileproxy/templates/base.html	Adds a centered warning-styled banner below the top navigation indicating development environment status with a link to the GitHub repository.
ECS Task Resource and Scaling Configuration terraform/ecs.tf	Reduces task-level CPU from 1024/512 to 256 and memory from 2048/1024 to 512 across api, ui, and worker services. Container environment variables GUNICORN_WORKERS and CELERY_WORKERS are set to "1". Auto-scaling max limits are constrained to 1 for all three services while preserving min, target_cpu, and scale_in values.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

🐰 A banner now waves, dev environment's true,
With scaled-down resources, lean and light through and through,
Fewer processes spinning, small containers run fleet,
The dev environment downscale is finally complete! 🌾

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately summarizes the main change: implementing cost reduction measures as a holding pattern, with a quantified savings metric (~56% monthly savings). It directly relates to both major changes in the PR (dev banner and infrastructure downsizing).
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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 unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/holding-pattern-cost-reduction

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[Copilot]

Pull request overview

This PR reduces holding-pattern infrastructure costs by downsizing ECS/Fargate resources, limiting service scale-out, and adding an active-development notice to the shared UI layout.

Changes:

• Shrinks API, UI, and worker task definitions to 0.25 vCPU / 512 MB.
• Reduces Gunicorn and Celery worker concurrency to 1.
• Caps API/UI/worker autoscaling maximum capacity at 1 and adds a development banner to the base template.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
terraform/ecs.tf	Reduces ECS task sizing, runtime concurrency, and autoscaling maximums for cost savings.
fileproxy/templates/base.html	Adds a site-wide active-development banner with a link to the GitHub repository.

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