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February 13: Friday Night Multi-Agent Architecture

A marathon session: 13 pull requests merged (2 features, 2 fixes, 1 docs, 3 refactors, 1 test, 4 maintenance). Test reliability improvements.

Developer Journal

Friday night coding from the couch — 7:53 PM, powered by an excellent afternoon nap. The composite wizard is getting closer to where it needs to be, shared screenshots showing progress.

JWST composite image of the Southern Ring Nebula showing infrared bands in green, blue, and red

Cropped view of the Southern Ring Nebula composite with tighter framing

Nearly midnight and instead of sleeping, designing a multi-agent architecture with multiple worktrees and Docker stacks that could be dynamically scaled. A previous attempt with just two Claude terminals hadn't gone well. The vision: agent teams with isolated environments, each with their own Docker stack. The reality: it would absolutely melt the laptop.

Terminal diagram showing multi-agent architecture with Claude and Codex teams sharing worktrees and Docker stacks on separate ports

Highlights

#315 resolve analyzer warnings in thumbnail queue files

Fix 8 analyzer warnings (promoted to errors with --warnaserror) introduced in #314.

The dotnet build in the Docker container doesn't use --warnaserror, so these passed CI but fail the local compliance check.

#300 add lineage view thumbnails and fix thumbnail path bug

Add inline 48x48 thumbnails to lineage file cards and fix a critical bug where thumbnail generation was failing with 403 Forbidden due to absolute file paths being sent to the processing engine.

Thumbnail generation was completely broken — all 2,020 queued records failed silently. The ThumbnailService sent absolute paths (/app/data/mast/...) but the processing engine expects relative paths ...

What Changed

Features (2)

  • #297 add automatic FITS thumbnail generation for dashboard cards
  • #300 add lineage view thumbnails and fix thumbnail path bug

Bug Fixes (2)

  • #294 enable E2E export tests with seed data and auth flow
  • #315 resolve analyzer warnings in thumbnail queue files

Refactoring (3)

  • #308 split JwstDataDashboard into focused view components
  • #313 replace emoji indicators with SVG icons
  • #314 replace fire-and-forget Task.Run with background task queue

Testing (1)

  • #309 add synthetic and fixture-based thumbnail tests

Documentation (1)

  • #316 update backend service documentation for thumbnail queue and missing services

Maintenance (4)

  • #295 add issue link prompt to PR template
  • #310 block commits on main and allow branch deletion in hooks
  • #311 add branch cleanup script for squash-merge workflows
  • #312 optimize CodeQL CI with path filtering and caching

Issues

Opened:

  • #298 — fix: SeedDataService should assign Admin role to admin user
  • #301 — fix: ImageViewer shows no metadata for mosaic-generated FITS files
  • #302 — refactor: split JwstDataDashboard into separate view components
  • #303 — refactor: extract shared MapToDataResponse and path resolution helpers
  • #304 — test: add unit tests for ThumbnailService
  • #305 — refactor: replace emoji indicators with SVG icons
  • #306 — refactor: replace fire-and-forget Task.Run with proper background task queue
  • #317 — Thumbnail generation fails for large FITS files (413 Request Entity Too Large)

Closed:

  • #255 — Re-enable CodeQL Security Analysis
  • #278 — Enable GitHub Branch Protection on Main
  • #286 — E2E Export Tests Skipped — No Seed Data in CI
  • #287 — Optimize CodeQL CI with Path Filtering and Caching
  • #298 — fix: SeedDataService should assign Admin role to admin user
  • #302 — refactor: split JwstDataDashboard into separate view components
  • #305 — refactor: replace emoji indicators with SVG icons
  • #306 — refactor: replace fire-and-forget Task.Run with proper background task queue

17 commits across 13 pull requests. Next: February 14, 2026 — use memory-efficient loading for thumbnail generat..., fix markdown table alignment across project docs, add language specifiers to fenced code blocks