Fix D1 dashboard recent items query

[masonjames]

What does this PR do?

Fixes the D1 dashboard 500 from recent-items loading by replacing the single cross-collection UNION ALL query with per-collection capped queries that are merged and limited in JS. This preserves the dashboard API shape while avoiding D1's low compound SELECT limit on sites with many collections.

Closes #895

Type of change

• Bug fix
• Feature (requires maintainer-approved Discussion)
• Refactor (no behavior change)
• Translation
• Documentation
• Performance improvement
• Tests
• Chore (dependencies, CI, tooling)

Checklist

• I have read CONTRIBUTING.md
• pnpm typecheck passes
• pnpm lint passes
• pnpm test passes (or targeted tests for my change)
• pnpm format has been run
• I have added/updated tests for my changes (if applicable)
• User-visible strings in the admin UI are wrapped for translation (if applicable). Do not include messages.po changes except in translation PRs — a workflow extracts catalogs on merge to main.
• I have added a changeset (if this PR changes a published package)
• New features link to an approved Discussion: N/A — bug fix

AI-generated code disclosure

• This PR includes AI-generated code — model/tool: GPT-5 Codex

Screenshots / test output

Not visual.

Local targeted checks:

pnpm --silent lint:quick
=> { "diagnostics": [] }

cd packages/core && pnpm exec vitest run tests/unit/api/dashboard-handlers.test.ts
=> Test Files 1 passed; Tests 11 passed

pnpm --filter emdash typecheck
=> passed

pnpm format
=> passed

GitHub CI is passing, including Typecheck, Lint, Tests, Integration Tests, Browser Tests, Smoke Tests, E2E shards, Format, Version Check, Validate Plugins, and Validate PR.

Additional review:

Adversarial review cycle 1: found flaky test assertion on tied timestamps.
Fix applied: removed ordering-sensitive assertion from the D1 regression test.
Adversarial review cycle 2: No bugs found.

[changeset-bot]

🦋 Changeset detected

Latest commit: 9a2af65

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 13 packages

Name	Type
emdash	Patch
@emdash-cms/cloudflare	Patch
@emdash-cms/fixture-perf-site	Patch
@emdash-cms/perf-demo-site	Patch
@emdash-cms/cache-demo-site	Patch
@emdash-cms/admin	Patch
@emdash-cms/auth	Patch
@emdash-cms/blocks	Patch
@emdash-cms/gutenberg-to-portable-text	Patch
@emdash-cms/x402	Patch
create-emdash	Patch
@emdash-cms/auth-atproto	Patch
@emdash-cms/plugin-embeds	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[pkg-pr-new]

Open in StackBlitz

@emdash-cms/admin

npm i https://pkg.pr.new/@emdash-cms/admin@910

@emdash-cms/auth

npm i https://pkg.pr.new/@emdash-cms/auth@910

@emdash-cms/blocks

npm i https://pkg.pr.new/@emdash-cms/blocks@910

@emdash-cms/cloudflare

npm i https://pkg.pr.new/@emdash-cms/cloudflare@910

emdash

npm i https://pkg.pr.new/emdash@910

create-emdash

npm i https://pkg.pr.new/create-emdash@910

@emdash-cms/gutenberg-to-portable-text

npm i https://pkg.pr.new/@emdash-cms/gutenberg-to-portable-text@910

@emdash-cms/x402

npm i https://pkg.pr.new/@emdash-cms/x402@910

@emdash-cms/plugin-ai-moderation

npm i https://pkg.pr.new/@emdash-cms/plugin-ai-moderation@910

@emdash-cms/plugin-atproto

npm i https://pkg.pr.new/@emdash-cms/plugin-atproto@910

@emdash-cms/plugin-audit-log

npm i https://pkg.pr.new/@emdash-cms/plugin-audit-log@910

@emdash-cms/plugin-color

npm i https://pkg.pr.new/@emdash-cms/plugin-color@910

@emdash-cms/plugin-embeds

npm i https://pkg.pr.new/@emdash-cms/plugin-embeds@910

@emdash-cms/plugin-forms

npm i https://pkg.pr.new/@emdash-cms/plugin-forms@910

@emdash-cms/plugin-webhook-notifier

npm i https://pkg.pr.new/@emdash-cms/plugin-webhook-notifier@910

commit: 9a2af65

[masonjames]

Closing as a duplicate of #896. I missed that #896 already fixes #895 with the same per-collection recent-items approach, has a changeset, and has green CI. The only notable difference in this PR was a D1-like regression test that rejects compound UNION ALL query construction; maintainers can still lift that from this closed PR if useful, but #896 should be the active fix.

[Copilot]

Pull request overview

This PR fixes the dashboard’s “recent items” query so it no longer triggers D1’s low compound-SELECT limit. In the core API, it replaces the cross-collection UNION ALL approach with per-collection capped queries that are merged in application code, while keeping the dashboard response shape unchanged.

Changes:

• Reworked fetchRecentItems() to query each collection separately, merge the results in JS, and return the top 10 most recently updated items.
• Added a regression-oriented unit test intended to guard against reintroducing a compound recent-items query on D1.
• Added a patch changeset for the published emdash package.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
packages/core/src/api/handlers/dashboard.ts	Replaces the dashboard recent-items SQL strategy with per-collection queries plus JS merge/sort/limit logic.
packages/core/tests/unit/api/dashboard-handlers.test.ts	Adds a new regression test for the D1 compound-select failure mode.
.changeset/stale-actors-sneeze.md	Records the patch release note for the D1 dashboard fix.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.