fix: restore compilation of scoregate-score

[ayomidearegbeshola29-dev]

main does not compile, so the test suite cannot run at all. This restores the build.

What was broken

cargo test -p scoregate-score --lib fails with 10 errors on main:

• verkle.rs was truncated to 210 lines, ending mid-statement at let mut buf =, with a literal truncation marker. Restored byte-identical from 42958bb.
• The ledgerlens-score -> scoregate-score package rename (c54f61b) dropped four storage functions that governance_helpers.rs still calls. Restored from 2d161b7, plus the two DataKeyD variants they need.
• finalize_score_state was lost the same way. Restored from 0f5f35a.
• query_risk_gate_with_confidence called env.invoker(), which is not a Soroban API. The working version used env.current_contract_address().
• events.rs was missing the Vec import; storage.rs needed a type annotation and no longer uses SymbolStr.

I confirmed each of these by checking that upstream main still fails after only the verkle restore, so the verkle fix alone is not enough.

Verification

• cargo check -p scoregate-score --lib — clean
• cargo test -p scoregate-score --lib — 772 pass, 20 fail

The 20 failures are pre-existing and in unrelated modules (ttl_rent_manager, migration_rollback, malformed_proof_corpus, reconciliation, rejection_precedence, and others). They are left for whichever issues own them; this PR only restores the build so they can be investigated and so the feature issues can be worked on.

Note

cargo test rewrites ~350 files under test_snapshots/. Those are test artifacts, not part of this change, and were reverted before committing — the diff is 5 source files only.

[drips-wave]

Hey @ayomidearegbeshola29-dev! 👋 It looks like this PR isn't linked to any issue.

If this PR is for one of the issues assigned to you as part of a Wave, please link it to ensure your contribution is tracked properly. You can do this by adding a keyword to the PR description (e.g., Closes #123), or by clicking a button below:

Issue	Title
#110	#60 — Aggregator Read Endpoints Mutate Instance Storage on Shard Failure	Link to this issue
#111	#61 — Aggregator Decoupled Getters Ignore Unhealthy Status of Primary Shard	Link to this issue
#109	#59 — Aggregator Risk Gate Fails Open When All Registered Shards Are Unhealthy	Link to this issue
#68	#18 — Unbounded Loop and Gas Exhaustion in export_all_scores_paginated	Link to this issue

ℹ️ Learn more about linking PRs to issues