H-4819: entity links pagination

[alex-e-leon]

🌟 What is the purpose of this PR?

Paginates links for entities when in readonly mode in hash-app. For now I've set the page limit to 200, and the pagination strategy is infinite scroll.

A couple more notes on my approach:

• A lot of the data was being passed around through context, and I've switched it all to be passed as props instead. While I was trying to understand how the existing components worked, the context pattern made it really hard to understand where data was being set + updated + read. Before react-compiler this might not have been possible due to performance issues, but I don't see any performance impact even on very large datasets. @CiaranMn If you prefer though that I keep the old context approach let me know and I'll undo it.
• There's a lot of existing complex logic around editable state/draft states/switching between entities within the same view etc. The new pagination logic adds an additional layer of complexity. I mostly gave up trying to understand all this complexity and just asked claude to handle it, so I'm not super proud of this code - but I can't really see any better approach to getting the logic right without a large refactor or just throwing more ai at it.

Pre-Merge Checklist 🚀

🚢 Has this modified a publishable library?

This PR:

• does not modify any publishable blocks or libraries, or modifications do not need publishing

📜 Does this require a change to the docs?

The changes in this PR:

• are internal and do not require a docs change

[vercel]

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Project	Deployment	Actions	Updated (UTC)
hash	Ready	Preview, Comment	Jun 25, 2026 4:00pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
hashdotdesign-tokens	Ignored	Preview	Jun 25, 2026 4:00pm
petrinaut	Skipped		Jun 25, 2026 4:00pm

[cursor]

PR Summary

Medium Risk
Entity page load and link display behavior change across readonly vs editable paths and draft/permission edge cases; pagination and stale-completion handling add complexity but stay localized to the entity editor.

Overview
Readonly entity views no longer load all incoming/outgoing links in the main queryEntitySubgraph call. Link traversal is omitted until permissions return; if the user can edit, a second fetch adds full link data for the editor. If the entity is readonly, incoming/outgoing link sections load links themselves via cursor pagination (100 per page, infinite scroll) through new useEntityLinks and useAccumulatedCursorPagination, with totals and link-type filter options from separate summarize queries.

The monolithic LinksSection is removed; incoming/outgoing sections own data loading, link-type filtering (useLinkTypeFilter), loading/error states, and pass props into the virtualized tables instead of useEntityEditor. Editable mode still uses the full subgraph and the existing grid for outgoing links; readonly tables gain scroll-gated loadMore, server sort on outgoing link type where supported, and simplified client-side sort/filter elsewhere.

VirtualizedTable gains optional infinite-scroll hooks (onEndReached, onRangeChange, onIsScrolling, loadingMore). Global search caps entity/entity-type queries at 100 results. CRM seed data fixes pipeline stage default probability so Closed Won/Lost are 100%/0% and open stages ramp to 90%.

^{Reviewed by Cursor Bugbot for commit 0d994fc. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 59.62%. Comparing base (fd129ea) to head (7db06fb).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
apps/hash-api/src/seed-data/seed-crm-data.ts	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8886      +/-   ##
==========================================
+ Coverage   59.61%   59.62%   +0.01%     
==========================================
  Files        1348     1348              
  Lines      131877   131754     -123     
  Branches     5944     5942       -2     
==========================================
- Hits        78615    78562      -53     
+ Misses      52357    52288      -69     
+ Partials      905      904       -1     

Flag	Coverage Δ
apps.hash-api	0.00% <0.00%> (ø)

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