chore(main): release 1.9.0

[PascaleBeier]

🤖 I have created a release beep boop

1.9.0 (2026-03-07)

Features

• cli: seed multitenant demo data [wip] (04417fb)
• config: add data path and backup settings [wip] (da423c9)
• db: add tenant database migrations [wip] (f460ab9)
• db: add tenant store manager and analytics helpers [wip] (228843a)
• db: add tenant team store core [wip] (589f0fc)
• frontend: add confirm popups to admin and site management [wip] (ec1799e)
• frontend: add create team dialog [wip] (7780626)
• frontend: add return-url auth redirect support [wip] (aaa5160)
• frontend: add team admin pages [wip] (7e1a160)
• frontend: add team models service and guard [wip] (4b9484f)
• frontend: add team switcher component [wip] (98ba1e6)
• frontend: refresh analytics pages for linked ranges [wip] (af93257)
• frontend: wire team context into main layout [wip] (512bc70)
• mail: add team invite email support [wip] (92f5aea)
• runtime: wire tenant stores and entitlements [wip] (ba97fae)
• server: add team management endpoints [wip] (c1a96e8)
• server: resolve analytics through tenant stores [wip] (f0bff51)
• worker: add tenant backup worker [wip] (5663dc5)
• worker: add tenant-aware retention and restore [wip] (1cdc638)

Bug Fixes

• lint: deduplicate tenant analytics handlers (961733b)

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