BrowserOS Server - v0.0.140

• chore(release): reserve nightly v0.49.21 [skip ci] (9b9d840)
• fix(agent): propagate LLM errors to the chat UI with real detail (#2308) (1c4ae9f)
• fix(claw): reconcile historical live session status (#2306) (3f8be98)
• ci(release-cli): use frozen-lockfile install to match other workflows (#2303) (5e08709)
• fix(dev): keep the extension dev server alive on WXT 0.21 (#2299) (288eb61)
• chore: bump browserclaw extension version to 0.2.8.0 (#2297) (7620ea5)
• chore(release): update extension alpha feeds to 0.2.8.0 (8a9c7f3)
• chore: bump Claw server version to 0.0.37 (#2295) (8dae2b9)
• chore(release): snapshot browserclaw server alpha v0.0.37 (80ae7c0)
• chore(release): reserve nightly v0.49.20 [skip ci] (375a842)
• chore: bump agent extension version to 0.0.133.0 (#2286) (bfd2880)
• chore(release): update extension alpha feeds to 0.0.133.0 (6bb8834)
• chore: bump server version to 0.0.139 (#2284) (3d88c3a)
• chore(release): snapshot browseros server alpha v0.0.139 (74964f1)