Merge train 4843-1 (CI only; not for merge)

[erikdarlingdata]

Merge train, not for merge. This PR exists only to run CI once on dev plus the squash of each PR below, in this order. When it is green, each PR is squash-merged by itself in the same order, and dev's final tree is checked against this branch's tree. Then this PR is closed unmerged.

Part of #4843.

PRs in this train, in order

• Show the desktop Active Queries columns on the web Queries tab (Add the WPF viewer's missing views to the web viewer, starting with FinOps #4843) (Show the desktop Active Queries columns on the web Queries tab (#4843) #5102)
• Web: POST /api/alert-history/dismiss, with a column-level dismissed grant for the viewer role (Web: POST /api/alert-history/dismiss, with a column-level dismissed grant for the viewer role #5106)
• Web: Memory Pressure Events chart and PostgreSQL statement-eviction tile (Web: Memory Pressure Events chart and PostgreSQL statement-eviction tile #5107)
• Web server page: custom start and end in the Range picker (Web server page: custom start and end in the Range picker #5108)
• Add get_job_history: fleet-wide SQL Agent job runs over MCP, read through Darling.Storage (Add get_job_history: fleet-wide SQL Agent job runs over MCP, read through Darling.Storage #5095)

Train head ce11ee5b1, tree bd7fffe6d, base dev 21573611e.

[erikdarlingdata]

Train 1 landed: each PR above was squash-merged by itself in this order and dev's tree after the last one (aa7ea4c) is byte-identical to the tree this PR's CI tested (on dev 9b6f305). Closing unmerged, as planned.