test(M00): add empirical checkpoint FOV sweep

Work-Package: M00-QAR-FOV-SWEEP-001
Agent: sindo-main-codex
Tests: comparator filter self-test, FOV capture dry-run, bounded real sweep, repository gates
Fidelity: projection sweep remains inconclusive without reproducible reference yaw and pitch

coordination/claims/M00-QAR-FOV-SWEEP-001.md

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+# M00-QAR-FOV-SWEEP-001 — Empirical camera FOV sweep
+
+<!-- OPENWC_CLAIM:M00-QAR-FOV-SWEEP-001:sindo-main-codex:2026-07-14 -->
+
+## Ownership
+
+- Target: M00
+- Program: QAR
+- Owner/Agent ID: sindo-main-codex
+- Branch: `work/sindo-main-codex/m00-fov-sweep`
+- Lease expires UTC: 2026-07-14
+- Integrator: milestone integrator
+
+## Outcome
+
+Support a bounded empirical FOV sweep when build 12340 does not expose a readable camera FOV CVar.
+
+## Non-goals
+
+- Claiming exact WoW FOV from a single manually aimed screenshot.
+- Changing runtime player camera defaults.
+- Automating yaw/pitch registration or image warping.
+
+## Paths
+
+- Exclusive: FOV/filter CLI additions in checkpoint tools
+- Shared/hotspots: renderer baseline documentation
+- Generated/ignored: local sweep PNGs and JSON reports
+
+## Contracts and data
+
+- Public API/events: additive `--camera-fov` and comparator `--only` CLI options
+- Schema/format version: unchanged
+- Migration/compatibility: existing commands retain defaults
+- Consumers: M00 fidelity workflow
+
+## Dependencies
+
+- Requires: build 12340 reference JPG and paired-image comparator
+- Blocks: empirical projection ranking
+- External state: original screenshots remain outside Git
+
+## Verification
+
+- Commands: synthetic comparator test, capture dry-run with override, bounded real sweep
+- Fixtures: `elwynn_adt_boundary` reference
+- Fidelity evidence: ranked perceptual metrics with manual-direction limitation
+- Performance budget: offline diagnostic
+
+## Documentation deliverables
+
+- Inline public API docs: CLI headers
+- Module specification: verification/source map if needed
+- Data-flow diagram: FOV sweep flow
+- Sequence/state/dependency diagrams: not applicable
+- Source map/status updates: baseline findings
+
+## Simplicity and naming
+
+- Important names introduced: `camera_fov_override`, `only_filter`
+- Simplest considered solution: reuse capture and comparator
+- Rejected complexity/abstractions: computer vision registration framework
+- Unavoidable complexity and justification: multiple captures are required because client FOV is inaccessible
+- Measured optimization evidence: not applicable
+
+## Status
+
+- State: ready
+- Done: client FOV access audit, capture override, comparator filter/regression, dedicated-camera ownership fix and bounded sweep
+- Next: integrator review; obtain reproducible yaw/pitch/zoom metadata before changing normative FOV
+- Blocked by:
+
+## Handoff
+
+- Commit: branch HEAD
+- Results: corrected ranking 26=0.079588, 38=0.079633, 50=0.084353, 62=0.088360, 86=0.097993; plateau is inconclusive
+- Remaining risks: build 12340 FOV is inaccessible through tested APIs; manual direction/framing dominates metrics
+- Documentation updated: `docs/RENDER_BASELINE.md`, `docs/modules/world-renderer.md`