Show shop names in dashboard changelogs

[shyim]

Motivation

• Make changelog entries unambiguous when environments share names by including the shop name in account changelogs and displaying entries as Shop · Environment in the dashboard.
• Expose the shop name in the API schema and frontend types so UI and other consumers can rely on a stable field.

Description

• Add environmentShopName to the OpenAPI AccountChangelog and AccountExtensionEnvironment schemas and propagate the new field into generated types.
• Update SQL queries (GetUserChangelogs, GetUserChangelogsByOrg) to JOIN shop and select the shop name into the changelog rows.
• Populate EnvironmentShopName in API responses in internal/handler/account.go and in environment-detail mapping in internal/handler/environment_convert.go (using the existing deref helper for optional shop names).
• Update the dashboard UI to render changelog titles as Shop · Environment with a fallback to the environment name, and add/adjust unit tests to cover the rendering and API mapping.

Testing

• Ran frontend type-check (npm run tsc) and it succeeded.
• Ran the frontend dashboard unit tests (Dashboard.spec.ts) and they passed.
• Attempted to run the focused API integration test TestGetAccountChangelogs_IncludesShopName, but it could not start the required testcontainers (Redis/Postgres) in this environment so the integration test did not complete.
• A full mise run test run also could not complete for the same reason (testcontainers/rootless Docker provider unavailable).

---

Codex Task

[greptile-apps]

Greptile Summary

This PR adds shop names to dashboard changelog data and display. The main changes are:

• Adds environmentShopName to OpenAPI, Go, and frontend API types.
• Joins shop into account changelog queries and maps the shop name into responses.
• Renders dashboard changelog titles as Shop · Environment with an environment-only fallback.
• Adds focused backend and frontend test coverage for the new display field.

Confidence Score: 4/5

The changelog display path is mostly safe, but extension-environment responses can expose the new required shop-name field as an empty string.

• The new changelog SQL path is protected by the existing environment-to-shop relationship.
• The dashboard rendering handles missing or empty shop names without crashing.
• Some API response paths and stored JSON values can still return empty shop names for a required field.

api/internal/handler/account.go and historical last-changelog handling.

Important Files Changed

Filename	Overview
api/sql/queries/user.sql	Adds shop joins to user changelog queries; the join matches the non-null environment-to-shop relationship.
api/internal/handler/account.go	Maps shop names for account changelog responses, but related account-extension response paths need consistent population.
api/internal/handler/environment_convert.go	Adds shop names to live environment changelog mapping using the existing nullable helper.
api/openapi/spec.yaml	Marks shop names as required on changelog and account-extension schemas.
frontend/src/views/Dashboard.vue	Displays combined shop and environment names with a safe fallback when the shop name is empty.

_{Reviews (1): Last reviewed commit: "Show shop names in dashboard changelogs" | Re-trigger Greptile}

[greptile-apps]

Extension Environments Lose Shop Names

Adding this required response field makes environmentShopName part of every AccountExtensionEnvironment, but existing account-extension mappings that were not updated will serialize the Go zero value. Calls that return subscribed or extension environments can send "environmentShopName":"", so consumers receive an empty required shop name while changelog rows include the real value.

[greptile-apps]

Stored Changelogs Get Empty Shops

Existing last_changelog JSON stored before this field existed will unmarshal into this new string field as "" and then serialize it as a required value. Environment-detail responses can therefore show an empty shop name for historical lastChangelog data even when the current environment still has a shop name available.