Reorganize Blender Web execution around capabilities

docs/status/C4-002.md

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+# C4-002 Status
+
+status: done
+task: mesh_positive_pilot
+gate: G4
+updated: 2026-08-23 America/New_York
+
+C4-002 implements a typed `meshTranslateVertex` command for the `MESH` target.
+It validates a bounded finite three-axis delta, resolves the vertex before
+mutation, and uses the shared atomic Main transaction so malformed, stale,
+wrong-target, unknown-vertex, and overflow cases preserve geometry and Main
+state.
+
+The focused Node test and Chromium-only pilot cover desktop/WASM geometry delta
+parity, dirty state, negative rollback, undo/redo, save, and reopen. Evidence
+is under `tests/golden/corrective/C4-002/`; legacy queue mutation remains
+forbidden.
+
+All focused, Chromium, deterministic, regression, typecheck, governance,
+protected-hash, and diff gates exited 0. Handoff manifest:
+`tests/golden/corrective/C4-002/manifest.json`. Next corrective task:
+`C4-003`.