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  "result": "Round complete. Here's where the model stands.\n\n## Verification this round\n\n**Plan form closed out numerically.** The `/tmp/ov2/ov_plan.png` overlay I'd flagged was a red herring \u2014 its mask band (page rows 780\u20132245) picks up other drawings on the ACAP sheet, producing \"span\" coordinates out to 50 m on a 32.2 m semi-span. Measuring the render's own silhouette against the `top` ortho scale instead:\n\n| | measured | target |\n|---|---|---|\n| span | 64.26 m | 64.44 |\n| length | 70.68 m | 70.67 |\n| nose / tail station | \u221235.38 / 35.30 | \u221335.33 |\n\nThe 0.18 m span shortfall is \u22482 px of antialiased winglet tip. **No plan-form error.** The front overlay (`/tmp/ov2/ov_front.png`) independently confirms it \u2014 the red ACAP traces land on our wing planform, winglet cant, hump, nacelles, gear and fin, with only a ~5 px whole-overlay lateral offset from the drawing's centreline calibration. The side overlay still reconciles after this round's changes.\n\n## Fixes made\n\n1. **Engine exhaust** (`engines.js`) \u2014 added a 44-blade low-pressure turbine ring in the annulus between the core-nozzle rim and the plug, plus an inner shroud. From dead astern that ring was a plain black band, so the tail pipe read as a pale cone hanging in a hole. `exhaust aft L` now shows scale and depth. (+180 meshes, +2560 tris.)\n2. **Windshield wipers** (`details.js`) \u2014 they were mounted at `y 8.75`, which is the *header*: both arms hung off the top edge of the glass pointing up like aerials. Re-parked on the sill at the aft end of the pane, lying along the glass and canted up it, with the up-direction picked per flank because the port ring angle walks the other way.\n3. **No frame bays on the radome** (`livery.js`) \u2014 the panel grid and oil-canning bays started at station 2.2, ringing four bays across a one-piece glass-fibre moulding at exactly the point where the section is smallest and the cells tightest. Both now start at the radome joint (4.35).\n4. **`main gear` views reframed** \u2014 from 2.2 m up, the wing above the bogie took ~70% of the frame as shadowed undersurface. Dropped to axle height; the gear is now the subject against sunlit concrete.\n5. **`belly` view** \u2014 fov 20 framed 53 m at 150 m and cut the nose and fin clean off; fov 30 holds all 70.7 m.\n\n## Known limits, not regressed\n\n- Glazing edge serration is **mip moir\u00e9**, not the painter \u2014 I dumped the flat texture and the pane boundary is clean. SwiftShader clamps anisotropy to 1; this is the previously-accepted limit and would resolve on a real GPU.\n- Undersides are dark and blue-lit, which is what a shadow under a wing on a clear day looks like.\n- The `belly` sky is a flat saturated zenith blue.",
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