ui: data distribution screen (tracking issue)

[vilterp]

Description

Show users

• where their data lives
• how this is affected by zone configs
• how their workload is balanced across the cluster

Related issues

TODO

Breakdown

Milestone	Issue	PR	Description	Progress
🛴		#22344	Initial endpoint	🏁(minus #24802)
🛴		#24855	Initial page (replica count & zone configs)	🏁
🚲	TODO	#26879	Color and/or size coding instead of just numbers in each cell	✍️
🚗	#24961	TODO	Indexes & partitions	🤔
🚗	TODO	#26906	Leaseholders, QPS & Size	✍️
🚗	TODO	TODO	Design: enhance zone config list (collapse default configs, cross highlighting, syntax highlighting, pretty printing, etc)	📄
🚗	TODO	TODO	Liveness info on nodes	📄
🚀	TODO	TODO	Sidebar: show details for selected node (e.g. CPU, disk) or table (e.g. Schema)	📄
🚀	TODO	TODO	Integrate event log & range log to show whole story (events affecting replication + replication happening)	🤔
🚀	TODO	TODO	Some kind of integration with map (via sidebar, etc)	🤔
🚀	TODO	TODO	Hot range list (overall and/or per table) (can use new top-k ranges by QPS per store)	✍️
🚀	TODO	TODO	Problem range list	📄

Bugs

• ui: data distribution screen missing some zone configs #27718 — not all zone configs shown
• server: ReplicaMatrix endpoint errors after a table has been dropped #24853 — endpoint crashes after table dropped

Legend

Category	Icon	Description
Milestone
.	🛴	POC
.	🚲	MVP
.	🚗	Release
.	🚀	Future Work
Progress
.	📄	Not Started
.	🤔	Design needed (eng or visual)
.	✍️	In Progress
.	👥	In Review
.	🏁	Merged
.	🚷	Blocked

[github-actions]

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