fix(chat): show table and knowledge base folders in the resource menus

[waleedlatif1]

Summary

• Tables and knowledge bases have folders now, but the chat attachment menu (+ / @) and the embedded resource menu still listed them flat — both now show the same hierarchy as the Tables and Knowledge pages
• Collapsed the two near-duplicate workflow/file tree builders + renderers into one shared buildResourceFolderTree / ResourceFolderTreeItems / ResourceTreeSections, so all four foldered families (workflows, files, tables, KBs) go through one code path
• A single FOLDERED_SECTION_SPECS table now drives display order, folder source, ordering, and folder selectability — the skip-set is derived from it, so a new family can't be added in one place and missed in the other (which would render it twice)
• Side effect of the unification: items whose folder no longer resolves surface at the root instead of silently vanishing (this was a latent bug in the Files submenu)
• Table/KB folders are structure only, not attachable resources — making them attachable needs resource-policy, invalidator, and copilot VFS support, so it's deliberately out of scope

Type of Change

• Bug fix

Testing

• 10 unit tests for the shared tree builder; mutation-checked that each can actually fail (broke orphan-healing → 2 red, pruning → 1 red, sort ordering → 3 red)
• tsc -p apps/sim clean, bun run lint:check clean
• Not yet verified in a running app

Notes / follow-ups (not in this PR)

• Cmd-K search modal builds table/KB rows without folderPath, while workflows and files include it — the receiving UI already renders the breadcrumb
• The table and knowledge-base selectors in workflow blocks are still flat comboboxes; two tables named the same in different folders are indistinguishable
• Copilot VFS asserts tables/ and knowledgebases/ are flat namespaces — that's the reason the "not attachable" call above is a deferral rather than a resolution
• The viewport clamp on the chat menu's submenus (calc(100vw-32px)) arguably belongs in emcn's DropdownMenuSubContent for every submenu, not as a consumer override

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Aug 2, 2026 5:55am

[cursor]

PR Summary

Low Risk
UI-only browse-menu refactor with no auth or persistence changes; risk is mainly regressions in workflow/file picker behavior, mitigated by shared builder tests and unchanged attach/select handlers.

Overview
The chat + / @ attachment menus and the mothership Add resource dropdown now show tables and knowledge bases in the same folder hierarchy as the Tables and Knowledge pages, instead of flat lists.

Duplicate workflow/file tree logic is replaced by a shared buildResourceFolderTree plus ResourceFolderTreeItems / ResourceTreeSections, driven by FOLDERED_SECTION_SPECS so workflows, files, tables, and KBs share one code path and FOLDERED_RESOURCE_TYPES stays aligned with what the submenus render. Table/KB folder metadata is loaded via typed useFolders calls into structureFolders (not attachable, so omitted from flat search). Hydration gating intentionally ignores those folder fetches so @-mention Enter is not blocked on extra round-trips.

Items whose folder no longer exists surface at the root instead of disappearing (including a latent files-menu case). Ten unit tests cover nesting, orphan healing, pruning, sort order, and parent cycles.

^{Reviewed by Cursor Bugbot for commit 48f1da4. Configure here.}

[greptile-apps]

Greptile Summary

The PR adds folder-aware table and knowledge-base browsing to both resource menus while consolidating all foldered resource families onto a shared tree builder and renderer.

• Adds generic hierarchy construction with orphan recovery, recursive pruning, and optional manual ordering.
• Introduces declarative foldered-section specifications shared by the embedded resource dropdown and chat attachment menu.
• Adds focused unit coverage for hierarchy, ordering, pruning, orphan, and cycle behavior.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete changed-code defect identified.

The shared hierarchy preserves existing rendering and selection contracts, handles unresolved parents safely, updates reactively as folder queries resolve, and is exercised by focused tree-builder tests.

Important Files Changed

Filename	Overview
apps/sim/app/workspace/[workspaceId]/home/components/mothership-view/components/add-resource-dropdown/add-resource-dropdown.tsx	Consolidates foldered resource fetching, section construction, rendering, and flat-list suppression without an identified contract break.
apps/sim/app/workspace/[workspaceId]/home/components/mothership-view/components/add-resource-dropdown/resource-folder-tree.ts	Adds a generic deterministic tree builder with orphan recovery, empty-folder pruning, and optional sort-order handling.
apps/sim/app/workspace/[workspaceId]/home/components/mothership-view/components/add-resource-dropdown/resource-folder-tree.test.ts	Covers the shared builder’s nesting, source preservation, orphan, pruning, ordering, and cycle behavior.
apps/sim/app/workspace/[workspaceId]/home/components/user-input/components/plus-menu-dropdown/plus-menu-dropdown.tsx	Replaces duplicated workflow and file rendering with shared foldered sections, adding table and knowledge-base hierarchy support.
apps/sim/app/workspace/[workspaceId]/home/components/mothership-view/components/add-resource-dropdown/index.ts	Updates the module’s public exports to expose the shared tree-section APIs.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  Resources[Resource groups] --> Specs[FOLDERED_SECTION_SPECS]
  Folders[Workflow, file, table, and KB folders] --> Specs
  Specs --> Builder[buildResourceFolderTree]
  Builder --> Sections[ResourceTreeSections]
  Sections --> Embedded[Embedded resource dropdown]
  Sections --> Chat[Chat attachment and mention menu]

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