Add 30-day comparison columns to integrations table

[RaHehl]

Add 30-day comparison columns to integrations table

What

Two new columns on the integrations page: ± Installations and ± Position, showing how each integration changed compared to ~30 days ago.

Why

Makes it easy to measure the impact of changes across releases — e.g. after adding new discovery for UniFi Protect, UniFi Access and UniFi Network, you can immediately see how their install numbers and ranking evolve over the following month.

How it works

• Once per day (when the processing queue completes), the worker looks up the KV history entry closest to 30 days ago and stores it as month_ago inside the existing AnalyticsData object
• No new KV keys, no extra scheduled tasks — ~2 additional KV operations per day (list + read), negligible cost
• The site embeds month_ago.integrations into the page at build time; all comparison logic runs client-side
• If no month_ago data exists yet (first deployment) the columns are simply hidden until history is available
• New integrations not present in the snapshot are labelled NEW
• Unchanged values show —

[RaHehl]

[Copilot]

Pull request overview

Adds a “30 days ago” snapshot (month_ago) to the analytics payload and updates the integrations table UI to show ±Installations and ±Position deltas based on that snapshot.

Changes:

• Worker: looks up the history KV entry closest to 30 days ago and stores it as AnalyticsData.month_ago.
• Worker: preserves month_ago through analytics schema migrations and updates schedule handler tests accordingly.
• Site: conditionally renders two new comparison columns on the integrations table (and supports custom table headers in the shared table layout).

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
worker/src/handlers/schedule.ts	Populates storedAnalytics.month_ago by listing history keys and reading the closest snapshot.
worker/src/utils/migrate.ts	Preserves month_ago field across analytics data migrations.
worker/src/data.ts	Adds MonthAgoData type and optional month_ago field on AnalyticsData.
worker/tests/handlers/schedule.spec.ts	Extends PROCESS_QUEUE test to mock history list/get and assert month_ago is written.
site/src/integrations.html	Adds conditional UI to show ±Installations / ±Position vs month-ago snapshot.
site/src/_layouts/table.html	Allows pages to override the table header via customTableHeader.

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