Adds the reviewed 2026 Australian admin spine and keeps the sourced historical editions queryable. This version also changes how repeated LGA shapes are stored; the exact edition shapes remain available in the runtime and Detail download.

Added

• Admin spine: Added the reviewed ASGS 2026 Admin 0–6 selection and its release date evidence.
• Historical families: Added annual Local Government Area editions for 2021–2025 and retained the reviewed 2021 Statistical Area Level, Urban Centre and Locality, and special mesh block sources.
• Country history: Added the version-pinned CHANGES_OVER_TIME.md with year and family summaries.

Changes

• Historical storage: Stored the newest retained LGA edition with exact reverse changes for earlier editions. Five release-pinned GeoParquet exports reproduce their original Arrow rows and WKB exactly.
• Full routing: Bound the LGA edition indexes and compact objects to the admitted reference graph; the selected 2026 Admin spine remains materialized.
• Download format: Standardized exact and Display GeoParquet columns to portable shape schema 1.0.1 without changing loc_id, row order, or WKB. Historical download members use history/<family>/year=<YYYY>/part-0000.parquet; source-specific attributes remain in Full and are exposed as JSON in the download.

The source edition year orders publisher releases. It is not a claim that every polygon changed on January 1.

Normalized geometry source and material ownership without changing admitted coverage.

Changes

• source_material_identity: Added source-addressable family-bank and crosswalk lineage, licence policy, and material IDs.
• version_owned_paths: Replaced prior version-owned Full, Display, and reference-partition paths with release-scoped successors while retaining admitted coverage.

Optimized family and crosswalk storage without changing geographic content.

Changes

• physical layout: Repacked admitted family and crosswalk Parquets into bounded query-optimized row groups; identities, relationships, and geometry are unchanged.

Current-system baseline reconstructed from admitted release evidence.

Changes

• release: Established the first unified release manifest without changing geometry bytes.

Established a reconstructed historical baseline from retained source evidence.

Changes

• release: Recorded a deterministic pre-ledger baseline.

Established a reconstructed historical baseline from retained source evidence.

Changes

• release: Recorded a deterministic pre-ledger baseline.

Unified the complete Australian country release.

Changes

• Closed the Admin spine and reviewed statistical, local-government, place, and urban families into the shared Full/Display/download workflow.

Organized canonical identifiers, licenses, aliases, and crosswalks.

Changes

• Moved Australian administrative and ASGS relationships into the shared canonical country-graph contract.

First Australian administrative spine release.

Changes

• Published the Admin0-6 spine: 1 country, 9 Admin1, 89 Admin2, 340 Admin3, 2,454 Admin4, 61,811 Admin5, and 368,172 Admin6 records.
• Organized shallow Admin0-3 geometry nationally and deeper levels by Admin1 owner.

_Note: The early downloadable prototype used 0.1.0. The changelog presents this product milestone as 1.0.0; retained artifact metadata remains unchanged._