test(M00): add renderer coordinate calibration

Work-Package: M00-QAR-COORD-CALIBRATION-001
Agent: sindo-main-codex
Tests: coordinate probe, M00 dry-run, coordination and documentation gates
Fidelity: five build 12340 camera points round-trip within 0.000015 units

coordination/claims/M00-QAR-COORD-CALIBRATION-001.md

@@ -0,0 +1,78 @@
+# M00-QAR-COORD-CALIBRATION-001 — Renderer coordinate calibration
+
+<!-- OPENWC_CLAIM:M00-QAR-COORD-CALIBRATION-001:sindo-main-codex:2026-07-13 -->
+
+## Ownership
+
+- Target: M00
+- Program: QAR
+- Owner/Agent ID: sindo-main-codex
+- Branch: `work/sindo-main-codex/m00-coordinate-calibration`
+- Lease expires UTC: 2026-07-13
+- Integrator: milestone integrator
+
+## Outcome
+
+Record the five observed build 12340 camera positions as non-proprietary golden coordinates and determine whether the existing WoW/Godot position formula round-trips them.
+
+## Non-goals
+
+- Introducing the M01 production `CoordinateMapper` contract.
+- Changing terrain, placement, WMO, liquid, or streaming behavior.
+- Claiming camera composition parity from coordinate round-trip alone.
+
+## Paths
+
+- Exclusive: `src/tools/verify_render_coordinate_calibration.gd`
+- Shared/hotspots: `src/tools/render_baseline_manifest.json`, renderer baseline documentation
+- Generated/ignored: original-client screenshots and local reports
+
+## Contracts and data
+
+- Public API/events: none; headless diagnostic only
+- Schema/format version: additive checkpoint calibration metadata, manifest schema remains 1
+- Migration/compatibility: existing capture consumers ignore additive fields
+- Consumers: M00 fidelity workflow and future M01 golden fixtures
+
+## Dependencies
+
+- Requires: five accepted original-client build 12340 viewpoints
+- Blocks: diagnosis of paired camera/placement mismatch
+- External state: screenshots remain outside Git
+
+## Verification
+
+- Commands: coordinate calibration probe, baseline manifest, coordination and documentation gates
+- Fixtures: five `reference_wow_camera` values in renderer manifest
+- Fidelity evidence: positions were observed in build 12340 during the paired session
+- Performance budget: negligible headless arithmetic
+
+## Documentation deliverables
+
+- Inline public API docs: diagnostic script header
+- Module specification: renderer verification/source map update
+- Data-flow diagram: baseline calibration flow update
+- Sequence/state/dependency diagrams: not applicable; stateless synchronous probe
+- Source map/status updates: renderer module and baseline document
+
+## Simplicity and naming
+
+- Important names introduced: `reference_wow_camera`, `maximum_round_trip_error`
+- Simplest considered solution: direct formula probe over manifest fixtures
+- Rejected complexity/abstractions: production domain mapper before M01
+- Unavoidable complexity and justification: none
+- Measured optimization evidence: not applicable
+
+## Status
+
+- State: ready
+- Done: five golden camera points, headless round-trip probe, runner integration and documentation
+- Next: integrator review; diagnose terrain height/placement/composition separately
+- Blocked by:
+
+## Handoff
+
+- Commit: branch HEAD
+- Results: five points passed with maximum mapping/round-trip error 0.000015
+- Remaining risks: correct position arithmetic does not prove terrain height, placement or camera direction parity
+- Documentation updated: `docs/RENDER_BASELINE.md`, `docs/modules/world-renderer.md`

docs/RENDER_BASELINE.md

@@ -120,3 +120,21 @@ Baseline пока не имеет approved парных кадров ориги
 Первый paired run после калибровки создал десять сравнений (пять reference × cold/warm), без missing pairs. Все пары ожидаемо превысили строгий tolerance: mean perceptual error `0.0707..0.1746`, changed-pixel ratio `0.5504..0.8187`. Human inspection показал, что это пока не чистая material/lighting ошибка: при тех же WoW-derived координатах OpenWC terrain-overview camera находится под terrain/placements, WMO camera — внутри таверны, liquid camera — внутри скал; ADT и dense-M2 композиции также существенно смещены. До исправления coordinate/placement mismatch эти значения являются gap evidence, а не основанием расширять tolerance.
 
 Capture tool строит camera basis явно из target и world-up. Это исключает неоднозначный roll `look_at` при автоматической съёмке. `ViewportTexture.get_image()` сохраняется без дополнительного vertical flip для Godot 4.6.1.
+
+## Coordinate calibration
+
+Пять принятых build 12340 viewpoints записаны в manifest как `reference_wow_camera`. Они содержат только числовые world coordinates и не включают proprietary данные. Headless probe:
+
+```powershell
+godot --headless --path . --script res://src/tools/verify_render_coordinate_calibration.gd
+```
+
+```mermaid
+flowchart LR
+    O[Observed build 12340 WoW XYZ] --> W[WoW to Godot formula]
+    W --> G[Manifest Godot camera XYZ]
+    G --> R[Godot to WoW round-trip]
+    R --> E[Maximum numeric error]
+```
+
+На пяти точках maximum mapping/round-trip error равен `0.000015`. Это исключает текущую формулу `gx = center - wy`, `gy = wz`, `gz = center - wx` как источник крупного paired mismatch. Результат не доказывает renderer parity: следующая диагностика должна отдельно проверить terrain height, placement transforms и фактическое camera direction/FOV. Production `CoordinateMapper` остаётся задачей M01; M00 probe не создаёт второй публичный coordinate contract.

docs/modules/world-renderer.md

@@ -192,7 +192,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 
 ## Verification
 
-- Unit/contract tests: material mapping, unique-ID dedupe, placement probes, baseline manifest, synthetic perceptual checkpoint diff.
+- Unit/contract tests: material mapping, unique-ID dedupe, placement probes, baseline manifest, five-point coordinate calibration, synthetic perceptual checkpoint diff.
 - Integration/E2E: Eastern Kingdoms/Kalimdor streaming scenes and seven cold/warm checkpoints.
 - Fidelity evidence: пять локальных build 12340 reference JPG откалибровали terrain/ADT/M2/WMO/liquid viewpoints; automated paired-image metrics exist, но synthetic animation/dusk и полный human approval ещё не закрыты.
 - Performance budgets: M00 report records cold/warm p95 and max hitch; no final acceptance threshold yet.
@@ -242,6 +242,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `tools/run_render_baseline.ps1` | Unified M00 baseline runner |
 | `src/tools/compare_render_checkpoints.gd` | Offline JPG/PNG paired-image perceptual metrics and JSON pass/fail report |
 | `src/tools/capture_render_checkpoints.gd` | Deterministic no-roll checkpoint camera, performance and visual capture |
+| `src/tools/verify_render_coordinate_calibration.gd` | Build 12340 camera-coordinate golden point round-trip diagnostic |
 
 ## Related decisions and references
 

src/tools/render_baseline_manifest.json

@@ -43,6 +43,7 @@
       "name": "elwynn_terrain_overview",
       "coverage": ["terrain"],
       "camera": [16680.0, 180.0, 26220.0],
+      "reference_wow_camera": [-9153.334, 386.666, 180.0],
       "target": [16800.0, 62.0, 26400.0],
       "player": [16800.0, 58.0, 26400.0],
       "time_hours": 13.0
@@ -51,6 +52,7 @@
       "name": "elwynn_adt_boundary",
       "coverage": ["adt_boundary"],
       "camera": [17020.0, 105.0, 26590.0],
+      "reference_wow_camera": [-9523.334, 46.666, 105.0],
       "target": [17066.666, 62.0, 26666.666],
       "player": [17060.0, 58.0, 26660.0],
       "time_hours": 13.0
@@ -59,6 +61,7 @@
       "name": "goldshire_dense_m2",
       "coverage": ["dense_m2"],
       "camera": [16956.666, 150.0, 26466.666],
+      "reference_wow_camera": [-9400.0, 110.0, 150.0],
       "target": [17015.0, 62.0, 26525.0],
       "player": [17015.0, 58.0, 26525.0],
       "time_hours": 13.0
@@ -67,6 +70,7 @@
       "name": "goldshire_inn_large_wmo",
       "coverage": ["large_wmo"],
       "camera": [17013.666, 72.0, 26451.666],
+      "reference_wow_camera": [-9385.0, 53.0, 72.0],
       "target": [17042.27, 66.0, 26530.91],
       "player": [17042.27, 58.0, 26530.91],
       "time_hours": 13.0
@@ -75,6 +79,7 @@
       "name": "elwynn_waterfall_liquid",
       "coverage": ["liquid"],
       "camera": [16481.666, 190.0, 26366.666],
+      "reference_wow_camera": [-9300.0, 585.0, 190.0],
       "target": [16518.84, 68.0, 26427.27],
       "player": [16518.84, 55.0, 26427.27],
       "time_hours": 13.0

src/tools/verify_render_coordinate_calibration.gd

@@ -0,0 +1,88 @@
+extends SceneTree
+
+## Verifies observed build 12340 camera coordinates against the current renderer
+## WoW X/Y/Z to Godot X/Y/Z convention. This diagnostic does not define the
+## future M01 production CoordinateMapper contract.
+
+const MANIFEST_PATH := "res://src/tools/render_baseline_manifest.json"
+const WOW_WORLD_CENTER := 17066.666
+const MAXIMUM_POSITION_ERROR := 0.002
+
+
+func _initialize() -> void:
+	var manifest := _load_manifest()
+	if manifest.is_empty():
+		quit(1)
+		return
+
+	var failures: Array[String] = []
+	var calibrated_count := 0
+	var maximum_round_trip_error := 0.0
+	for checkpoint_variant in manifest.get("checkpoints", []):
+		if not (checkpoint_variant is Dictionary):
+			continue
+		var checkpoint: Dictionary = checkpoint_variant
+		var reference_wow_camera_variant = checkpoint.get("reference_wow_camera", null)
+		if not (reference_wow_camera_variant is Array):
+			continue
+		var reference_wow_camera: Array = reference_wow_camera_variant
+		var checkpoint_name := String(checkpoint.get("name", "checkpoint"))
+		if reference_wow_camera.size() != 3:
+			failures.append("%s reference_wow_camera must contain three coordinates" % checkpoint_name)
+			continue
+		var expected_godot_camera := _array_to_vector3(checkpoint.get("camera", []))
+		var reference_wow_position := _array_to_vector3(reference_wow_camera)
+		var mapped_godot_position := _wow_to_godot(reference_wow_position)
+		var round_trip_wow_position := _godot_to_wow(mapped_godot_position)
+		var mapping_error := mapped_godot_position.distance_to(expected_godot_camera)
+		var round_trip_error := round_trip_wow_position.distance_to(reference_wow_position)
+		maximum_round_trip_error = maxf(maximum_round_trip_error, maxf(mapping_error, round_trip_error))
+		if mapping_error > MAXIMUM_POSITION_ERROR:
+			failures.append("%s maps %.6f units away from manifest camera" % [checkpoint_name, mapping_error])
+		if round_trip_error > MAXIMUM_POSITION_ERROR:
+			failures.append("%s round-trip error is %.6f" % [checkpoint_name, round_trip_error])
+		calibrated_count += 1
+
+	if calibrated_count < 5:
+		failures.append("expected at least five build 12340 camera calibrations, found %d" % calibrated_count)
+	if not failures.is_empty():
+		for failure in failures:
+			push_error("RENDER_COORDINATE_CALIBRATION: %s" % failure)
+		quit(1)
+		return
+	print("RENDER_COORDINATE_CALIBRATION PASS points=%d maximum_error=%.6f" % [calibrated_count, maximum_round_trip_error])
+	quit(0)
+
+
+func _wow_to_godot(wow_position: Vector3) -> Vector3:
+	return Vector3(
+		WOW_WORLD_CENTER - wow_position.y,
+		wow_position.z,
+		WOW_WORLD_CENTER - wow_position.x
+	)
+
+
+func _godot_to_wow(godot_position: Vector3) -> Vector3:
+	return Vector3(
+		WOW_WORLD_CENTER - godot_position.z,
+		WOW_WORLD_CENTER - godot_position.x,
+		godot_position.y
+	)
+
+
+func _array_to_vector3(value_variant) -> Vector3:
+	if not (value_variant is Array) or value_variant.size() != 3:
+		return Vector3.ZERO
+	return Vector3(float(value_variant[0]), float(value_variant[1]), float(value_variant[2]))
+
+
+func _load_manifest() -> Dictionary:
+	var manifest_file := FileAccess.open(MANIFEST_PATH, FileAccess.READ)
+	if manifest_file == null:
+		push_error("Cannot open renderer baseline manifest: %s" % MANIFEST_PATH)
+		return {}
+	var parsed = JSON.parse_string(manifest_file.get_as_text())
+	if not (parsed is Dictionary):
+		push_error("Renderer baseline manifest is not a JSON object")
+		return {}
+	return parsed

tools/run_render_baseline.ps1

@@ -46,6 +46,7 @@ try {
     Invoke-GodotStep "render-materials" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_materials.gd")
     Invoke-GodotStep "m2-unique-dedupe" @("--headless", "--path", ".", "--script", "res://src/tools/verify_m2_unique_dedupe.gd")
     Invoke-GodotStep "baseline-manifest" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_baseline_manifest.gd")
+    Invoke-GodotStep "coordinate-calibration" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_coordinate_calibration.gd")
 
     $captureArgs = @(
         "--path", ".",