Bump version to v1.2.0

[Lash-L]

Summary

Bump the package, Home Assistant add-on, and lockfile to 1.2.0, and add the 1.2.0 add-on changelog.

Changes since v1.1.0:

• Onboarding for vacuums that have never been on the Roborock cloud ("New vacuum" in the guided CLI/GUI), with auto-inventory and a built-in catalog of Roborock robot vacuum models (feat: support onboarding vacuums without a cloud account (#62) #103, fixes Using local_roborock_server without roborock account? #62).
• Guided onboarding shows public-key calculation progress (feat: support onboarding vacuums without a cloud account (#62) #103).
• Onboarding adoption behind a reverse proxy / SNAT (fix(mqtt): allow onboarding adoption behind reverse proxy (#83) #105, fixes Device MQTT onboarding adoption fails behind a reverse proxy (client_ip correlation) #83).
• Custom advertised MQTT port (fix: custom MQTT advertised port #73).
• Explicit HTTPS ports for reverse proxies, including --local-api on :443 (Fix explicit HTTPS port handling for reverse proxies #77, Fix --local-api explicit :443 being rewritten to :555 for sync #100).
• App routine deletion persists (Handle DELETE /user/scene/{id} so app routine deletion persists #107).
• Docs: tested vacuums, HA manual region flow, cert paths, LocalRock app (Document verified vacuum compatibility and fix report routing #92, docs: add LocalRock as mobile app option #101, docs(ha): document native Manual region flow and Let's Encrypt ssl paths #102, docs: update tested vacuums with Saros 20, Q5 Pro, Qrevo C, and QRevo reports #104, docs: note China-market devices don't work outside China #106, docs: clarify cert mapping, onboarding prompt details, and Android zipalign step #108).

Checklist

• pyproject.toml, src/roborock_local_server/__init__.py, roborock_local_server_addon/config.yaml, and uv.lock all at 1.2.0 (release workflow checks pyproject vs __init__).
• Beta add-on stays on 1.1.0-rc2 and unused; its changelog note and docs/updating.md now point at stable 1.2.0.
• uv run pytest: 239 passed.

After merge, publish the v1.2.0 GitHub release to build and push the image.

🤖 Generated with Claude Code