feat: improve Shanghai hotel discovery and tracking

[hoangsvit]

Summary

• expose Giá phòng / Hotel Prices from the dashboard and flight tracker
• switch hotel discovery to broad Shanghai hotels search, then filter on the client
• bootstrap the catalog with 5 Google Hotels pages after merge/push
• keep scheduled daily refresh light at 3 pages to reduce SerpApi usage
• allow manual runs with 3 / 5 / 8 pages
• dedupe by property_token/name, calculate distance from 531 Jinling East Road, and estimate a nearby landmark area
• preserve hotels discovered by a deeper run when a later 3-page refresh does not return them; preserved hotels keep metadata but their old live price is deliberately cleared
• add full browser filters: search, distance, area, min/max price, rating, review count, star class, amenity, priced-only, favorites-only
• use browser-local Quan tâm / Favorites instead of a hard-coded shortlist
• reject 0-property Google Hotels responses instead of committing an empty snapshot
• remove the old 10-hotel fallback snapshot so preview cannot look like real API data when API count is actually zero
• serialize Flight + Hotel writer workflows and rebase before push to prevent non-fast-forward failures

Hotel discovery flow

merge/push: Shanghai hotels -> up to 5 pages
manual:     Shanghai hotels -> choose 3 / 5 / 8 pages
scheduled:  Shanghai hotels -> up to 3 pages

API results
  -> merge properties + non_matching_properties
  -> dedupe by property_token/name
  -> calculate distance/area metadata
  -> preserve deeper catalog metadata from earlier runs
  -> clear stale price for hotels not seen in latest refresh
  -> save data/hotels.json
  -> user filters manually in hotels.html

Data safety

• ZERO_RESULTS exits with an error and does not overwrite the last good snapshot.
• The workflow validates raw_property_count, latest_unique_property_count, and pages_fetched before committing.
• Price history is written only for hotels that have a live rate in the latest Google Hotels response.

Workflow write serialization

concurrency:
  group: price-tracker-writes-${{ github.ref }}
  cancel-in-progress: false

The generated-data commit also fetches/rebases the branch immediately before push as a final guard against a concurrent human update.

[github-actions]

🌍 Web preview

• Open travel dashboard
• Open live flight prices
• Open live hotel prices

Preview is pinned to commit b2af2ba and updates automatically when the PR changes.

[qodo-code-review]

Qodo reviews are paused for this user.

Troubleshooting steps vary by plan Learn more →

On a Teams plan?
Reviews resume once this user has a paid seat and their Git account is linked in Qodo.
Link Git account →

Using GitHub Enterprise Server, GitLab Self-Managed, or Bitbucket Data Center?
These require an Enterprise plan - Contact us
Contact us →

[coderabbitai]

Important

• 🔍 Trigger review

This repository does not receive automatic reviews because it has fewer than 10 stars.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 7fd523ab-d3e0-48d6-b63e-00b1af0a3c90

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}