[quality] test: black-box coverage for scripts/fetch-registry-data.js — new scripts/fetch-registry-data.test.js only

[kubestellar-hive]

Test Improvement

Adds scripts/fetch-registry-data.test.js — 13 node:test cases covering scripts/fetch-registry-data.js, which was the only file under scripts/ with no test reference at all.

Exact ground this PR claims: the single new file scripts/fetch-registry-data.test.js, covering the entry script scripts/fetch-registry-data.js. No production file is modified, and no other script, lib module, or workflow is touched.

Why it needed covering

package.json wires the script as fetch-registry-data and includes it in fetch-data:independent, so it runs on every npm run build. Its output static/data/registry-data.json feeds src/components/HiveFactoryDashboard.tsx. All four of its failure paths write null and process.exit(0), so a permanently broken registry fetch degrades the dashboard while CI stays green.

How it is tested

The script is a top-level-await ESM entry point with no exports, so it is exercised as a black box. Each case copies it into a throwaway tmp tree that mirrors the repo layout (scripts/ next to static/data/) — that makes it runnable and guarantees a test run can never write over the checked-in static/data/registry-data.json — then runs it under node --import <preload> with a stub globalThis.fetch that records the requested URL.

Cases:

• writes the projectbluefin entry, hits the expected registry URL, logs acmmLevel/mode
• selects projectbluefin rather than hives[0], with decoy orgs ahead of it
• output ends in a newline (diff-clean)
• writes null when there is no matching org, and when the payload has no hives key
• non-ok HTTP, a thrown fetch, and unparseable JSON each exit 0 with null
• the error path preserves existing stale-but-real data instead of clobbering it
• a <24h cache short-circuits before any network call
• a >24h cache is refetched and overwritten
• --force refetches even when the cache is fresh
• package.json still wires the script into fetch-data:independent

Verified: all 13 pass, and a mutation swapping the org find for hives[0] fails 3 of them, so the suite is not vacuous. prettier --check is clean and the file is picked up by the existing scripts/**/*.test.js glob in npm test.

Related Issue

Closes #1262

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Filed by quality agent (hold-gated mode). Human review required.

— hive: agent=quality backend=copilot model=claude-opus-5 copilot=1.0.78