docs(M01): claim coordinate golden fixtures

Work-Package: M01-QAR-COORD-FIXTURES-001
Agent: sindo-main-codex
Tests: not applicable (claim only)
Fidelity: pinned AzerothCore spawn, raw ADT metadata and build 12340 observations scoped

coordination/claims/M01-QAR-COORD-FIXTURES-001.md

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+# M01-QAR-COORD-FIXTURES-001 — Coordinate golden fixtures
+
+<!-- OPENWC_CLAIM:M01-QAR-COORD-FIXTURES-001:sindo-main-codex:2026-07-15 -->
+
+## Ownership
+
+- Target: M01
+- Program: QAR
+- Owner/Agent ID: sindo-main-codex
+- Branch: `work/sindo-main-codex/m01-coordinate-fixtures`
+- Lease expires UTC: 2026-07-15
+- Integrator: M01 milestone integrator
+
+## Outcome
+
+Add a versioned, non-proprietary fixture and headless validator joining one
+pinned AzerothCore player spawn, raw ADT/MCNK metadata and the five M00
+original-client coordinate observations through coordinate contract version 2.
+
+## Non-goals
+
+- Committing ADT files, SQL dumps or original-client screenshots.
+- Claiming TrinityCore spawn equivalence without a pinned populated TDB source.
+- Migrating renderer/native consumers or rendering a live server spawn.
+- Changing coordinate formulas, IDs or `StreamingFocus`.
+
+## Paths
+
+- Exclusive: `src/tests/fixtures/coordinate_golden_points.json`,
+  `src/tools/verify_coordinate_golden_fixtures.gd`
+- Shared/hotspots: `docs/modules/coordinate-mapping.md`, this claim
+- Generated/ignored: extracted ADT data, server database downloads and Godot metadata
+
+## Contracts and data
+
+- Public API/events: no new production API; fixture schema version 1
+- Coordinate contract: version 2, unchanged
+- Migration/compatibility: additive test data; fixture consumers reject unknown schema versions
+- Consumers: M01 coordinate mapper, future native/renderer/server adapter migrations
+
+## Dependencies
+
+- Requires: merged coordinate contract version 2 at `b55bfca`
+- Blocks: coordinate consumer migration and golden server-spawn renderer integration
+- External state: source evidence reduced to pinned revision, numeric rows and SHA-256 hashes
+
+## Verification
+
+- Commands: fixture validator, coordinate mapper probe, M00 calibration,
+  manifest, coordination and documentation gates
+- Fixtures: AzerothCore Human Warrior start; raw `Azeroth_32_48.adt` MCNK
+  `(3,12)`; five build 12340 camera points
+- Fidelity evidence: exact source provenance and mapper outputs with bounded tolerances
+- Performance budget: negligible headless JSON and scalar arithmetic
+
+## Documentation deliverables
+
+- Inline public API docs: fixture-validator header and field validation functions
+- Module specification: fixture schema, provenance, verification and source map
+- Data-flow diagram: server/raw/client fixtures into mapper assertions
+- State/sequence/dependency diagrams: unchanged; synchronous stateless validation
+
+## Simplicity and naming
+
+- Important names introduced: `coordinate_golden_points`,
+  `verify_coordinate_golden_fixtures`
+- Simplest considered solution: one JSON fixture and one existing-style headless script
+- Rejected complexity/abstractions: test framework dependency, SQL parser, ADT bytes in Git
+- Unavoidable complexity and justification: three independent source categories need explicit provenance
+- Measured optimization evidence: not applicable
+
+## Status
+
+- State: active
+- Done: pinned source and raw-corpus research
+- Next: fixture schema, validator, documentation and gates
+- Blocked by: