fix(MAJORLEA-002-2): Region model uses @Value instead of the required Lombok quartet

[flamingo]

Closes findings from rule MAJORLEA-002-2 — Region model uses @value instead of the required Lombok quartet.

Draft — this is a starting point, not a finished change. The fix required judgment, so read it before trusting it.

#	Fix confidence	Finding	Location
1	🟢 92 high	Region model uses @value instead of the required Lombok quartet	backend/src/main/java/cx/flamingo/analysis/model/Region.java:1

What changed — and what was deliberately left — is explained per finding as inline review comments on the lines each finding touched.

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Run: https://product-hub.flamingo.so/admin/code-review
Run id: 89424001-8db6-4ce6-8840-ab853de69d56

Merging this PR is recorded as acceptance of the rule that produced it;
closing it unmerged is recorded as rejection. Both feed rule health, so
closing a wrong suggestion is useful rather than merely tidy.

[flamingo]

🦩 What this fix changed, finding by finding

1 finding(s) fixed in this draft — 1 explained inline on the diff.

[flamingo]

🦩 🔴 Region model uses @value instead of the required Lombok quartet

Replaced @Value with the mandated Lombok quartet (@Data, @Builder, @NoArgsConstructor, @AllArgsConstructor) on the Region class and its nested GeoCoordinates class in backend/src/main/java/cx/flamingo/analysis/model/Region.java, updated the lombok.Value import to the four corresponding lombok imports, matching the pattern used by sibling models (City, Language, State, SoccerTeam) and restoring no-arg construction for Jackson and builder-pattern construction consistency.

🤖 Prompt for AI agents

In backend/src/main/java/cx/flamingo/analysis/model/Region.java around line 1, review and complete this code-review fix: Region model uses @Value instead of the required Lombok quartet.
What the draft fix changed: Replaced `@Value` with the mandated Lombok quartet (`@Data`, `@Builder`, `@NoArgsConstructor`, `@AllArgsConstructor`) on the `Region` class and its nested `GeoCoordinates` class in `backend/src/main/java/cx/flamingo/analysis/model/Region.java`, updated the `lombok.Value` import to the four corresponding lombok imports, matching the pattern used by sibling models (City, Language, State, SoccerTeam) and restoring no-arg construction for Jackson and builder-pattern construction consistency.
Verify the change is correct and complete; do not refactor unrelated code.

fix confidence: 🟢 92 high — react 👍/👎 to teach the reviewer