v0.9.0

What's Changed

• chore(demo): adopt 0.9.0-preview.10 by @yesbert in #278
• docs: the navigation tree gets its page, and a session without a backend its recipe by @yesbert in #279
• chore(openspec): archive the navigation-tree and session docs change by @yesbert in #281
• fix(shell): the isolation level can be named by @yesbert in #280
• docs: the llms files carry the whole contract, and two guards hold it by @yesbert in #282
• chore(openspec): archive the llms-files change by @yesbert in #283
• docs: what a careful reader found by @yesbert in #284
• chore: bump version to 0.9.0 by @yesbert in #285

Full Changelog: v0.9.0-preview.10...v0.9.0