Add custom projects with LDraw part search, Rebrickable set import, and per-project part management

[Copilot]

Adds support for custom projects not tied to a LEGO set number, with a searchable LDraw library index, Rebrickable set import, and full add/remove/quantity management for project parts.

Database

• New ldraw_part_index table indexes local LDraw .dat files (part_num + description from file header)
• New project_parts table stores parts belonging to custom projects (part_num, quantity, color)
• is_custom boolean column added to projects
• Alembic migration 002_custom_projects handles all schema changes idempotently

Backend

• build_ldraw_part_index() / search_ldraw_part_index() in ldraw.py — scan parts/*.dat, parse description from line-type-0 header, upsert into index
• New router ldraw_parts.py exposes:
  • GET /api/ldraw-parts/search?q= — full-text search on part_num and description
  • POST /api/ldraw-parts/index — (re)build index by scanning local library
  • GET /api/ldraw-parts/index/status — indexed count
• POST /api/projects now accepts is_custom: true with no set_num
• New CRUD routes under /api/projects/{id}/parts — list, add (merges quantity if part already present), PATCH quantity, DELETE
• process_generation_custom() mirrors the existing generation pipeline but reads parts from project_parts instead of calling Rebrickable

Frontend

• ProjectsPage: + Custom Project button opens a modal to name and create a custom project
• ProjectDetailPage: custom projects show a parts management panel with two tabs:
  • LDraw library tab: LDraw index status + one-click rebuild, search input → results dropdown with + Add per result
  • From Rebrickable set tab: search for any LEGO set by name or number, browse the set's full parts list (with part name, color, and quantity), add individual parts with + Add, or bulk-import all parts at once with Import all (N) (parallelised with Promise.all)
  • Parts list with inline −/+ quantity controls and Remove button
  • Job wizard loads custom project parts for per-part rotation (bypasses Rebrickable call)

[!WARNING]

Original prompt

Create a new branch called task/custom-projects.

Give users the option of creating a custom project with self selected parts (create a search mechanism for the ldraw cache, it should probably just be a database table that indexes the ldraw cache)

Also allow users to add/remove parts from a Project.

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[scubar]

@copilot allow me to select a Set from rebrickable and add parts to it as well.

[Copilot]

@copilot allow me to select a Set from rebrickable and add parts to it as well.

Done in commit 5e4e5d7. The custom project parts panel now has a "From Rebrickable set" tab alongside the existing LDraw library tab.

Flow:

1. Switch to the "From Rebrickable set" tab
2. Search by set name or number (e.g. "75192" or "Millennium Falcon") — calls the existing Rebrickable search API
3. Click a result to browse its parts list (with part name, color, and quantity shown)
4. Add individual parts with "+ Add", or bulk-import the whole set with "Import all (N)"
5. Use "← Back" to search for a different set

All added parts land in the project's parts list with their Rebrickable quantity and color data preserved.

Here's how the three states look:

(Screenshot of the dark-theme UI below)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5037 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.soqk4I --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,5937910168472872059,6869429015508535560,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,12851094879095936569,9618905135070686889,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --no-sandbox --disable-gpu --screenshot=/tmp/tab_ldraw.png --window-size=1200,900 file:///tmp/preview.html cal/bin/git (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5172 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.7iLWcf --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,18324423658735494934,11336544684730738552,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,13993419433906161248,4835989713382116171,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• cdn.tailwindcss.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5037 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.soqk4I --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,5937910168472872059,6869429015508535560,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,12851094879095936569,9618905135070686889,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --no-sandbox --disable-gpu --screenshot=/tmp/tab_ldraw.png --window-size=1200,900 file:///tmp/preview.html cal/bin/git (dns block)
• clients2.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5037 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.soqk4I --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,5937910168472872059,6869429015508535560,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,12851094879095936569,9618905135070686889,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --no-sandbox --disable-gpu --screenshot=/tmp/tab_ldraw.png --window-size=1200,900 file:///tmp/preview.html cal/bin/git (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5172 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.7iLWcf --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,18324423658735494934,11336544684730738552,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,13993419433906161248,4835989713382116171,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• rebrickable.com
  • Triggering command: /usr/bin/python3 python3 -m pytest backend/tests/ -q (dns block)
• redirector.gvt1.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5037 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.soqk4I --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,5937910168472872059,6869429015508535560,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,12851094879095936569,9618905135070686889,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --no-sandbox --disable-gpu --screenshot=/tmp/tab_ldraw.png --window-size=1200,900 file:///tmp/preview.html cal/bin/git (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5172 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.7iLWcf --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,18324423658735494934,11336544684730738552,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,13993419433906161248,4835989713382116171,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• www.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5037 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.soqk4I --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,5937910168472872059,6869429015508535560,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,12851094879095936569,9618905135070686889,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /usr/bin/chromium chromium --headless --no-sandbox --disable-gpu --screenshot=/tmp/tab_ldraw.png --window-size=1200,900 file:///tmp/preview.html cal/bin/git (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --use-angle=swiftshader-webgl --crashpad-handler-pid=5172 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/org.chromium.Chromium.scoped_dir.7iLWcf --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,18324423658735494934,11336544684730738552,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,13993419433906161248,4835989713382116171,4 --trace-process-track-uuid=3190708989122997041 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)