[Freshair129]

Summary

Recover the bounded D7 extension left on the archived HQL2 branch (3f2e66b0), selectively applied to current main while preserving the newer parser reservation and zero-hop ordering guard.

• Allow one optional plain-ASCII label for zero-hop single-property projection: MATCH (n:Person) RETURN n.prop.score.
• Compare actor-scoped HQL1, legacy HQL and canonical HQL2 bags, including duplicate values, missing/explicit-null properties and an empty label selection.
• Keep filters, multiple columns, ordering, limits, temporal selectors and non-plain labels fail-closed; retain the current authorization and P6 boundary.
• Update the approved D7 contract and peer documents, preserve G4 documentation during integration, and record the recovery RCA.

Dependency and validation

Depends on #247 and must merge after it. The branch contains its G4 parent commits and targets main so main-filtered test workflows run. Once #247 is merged with its commit ancestry preserved, this PR's runtime diff is confined to the existing legacy zero-hop property arm. This head also inherits the annotation fixture follow-up from #247.

• Final focused local tests after fixture integration: 34 passed, 0 failed across annotation ACL (12), property projection (3), HQL1 adapter (13), labeled filter (2), ordering (2) and G4 diagnostics (2), with --locked --no-default-features --jobs 2 and explicit target selection.
• Strict all-target Clippy in core and default/NAPI configurations: passed with -D warnings.
• Default addon/library and standalone-server builds: passed.
• Documentation validation: 244 files, 0 violations; formatting, diff checks and version SSOT: passed.
• Base G4 expanded local regression before the fixture-only follow-up: 547 passed, 0 failed, 1 existing ignored case. The later annotation follow-up passes 20 focused tests on G4 and 34 on this integrated tree; strict all-target Clippy passes again in both configurations. Production source/build inputs are unchanged from the successful builds.
• Local validation is complete. Merge requires merged feat(hql2): recover truthful typed ANALYZE diagnostics #247 and green hosted checks at head 0e2fb8cb1fdd782943456e6a4ac9d1c9feb40577.

The initial G4 Windows job failed three annotation cases in a database-ID setup query with a generic query-budget error. The inherited test-only fix computes that fixture metadata from the existing public-key fingerprint contract. All substantive assertions remain. The underlying runner/budget dimension is unconfirmed and the incident RCA retains the original failure; qualification uses the fresh updated-head CI.

Qualification

C-3 / HIGH, bounded by the existing HQL1 differential-extension contract. No new transport, persistence, migration or authorization contract is introduced. Existing direct v1 transport behavior is unchanged. This recovery does not close broader P8/P13 or independent qualification.

Final hosted qualification and merge

At head 0e2fb8cb1fdd782943456e6a4ac9d1c9feb40577, 49 checks succeeded and 5 conditional checks skipped; all 10 workflows completed successfully, including Tests and Mobile Build. Merged normally after #247 as 6195e85943d519a5080cfda8bf17dda6c695a85f. The merged main tree exactly matches this tested head.