Remaster three remaining olive terrain pictures

docs/hd-backlog.md

@@ -1,14 +1,14 @@
 # Original artwork HD backlog
 
-Current artwork/runtime checkpoint — 18 October 2026: the optional HD pack contains **5,480 reviewed pictures in 3,627 complete sequences**, including **4,355 Terrain pictures**. **273 originals still await approval**: 180 Terrain, 59 enemies and ground objects, 33 UI/other pictures and one boss. Held drafts and actual provider refusals remain part of that backlog.
+Current artwork/runtime checkpoint — 18 October 2026: the optional HD pack contains **5,483 reviewed pictures in 3,630 complete sequences**, including **4,358 Terrain pictures**. **270 originals still await approval**: 177 Terrain, 59 enemies and ground objects, 33 UI/other pictures and one boss. Held drafts and actual provider refusals remain part of that backlog.
 
-This append adds the complete `40355–40364` sequence and the standalone `203ff`. They use untouched existing PNGs. Six frames explicitly retain **493 Original logical cells**; these are not generated HD. The larger lists use the reviewed SourceF bounds, and `203ff` brings the installed palette opt-ins to nine. Its related inventory keeps twelve registered pictures and three Original fallbacks.
+One new authentic-Source-only image supplies `203f8`, `203f9` and `203fa`. Its PNG is untouched, with three complete native definitions, plain sampling and unchanged 32×32 canvases, zero origins and fixed atlas crops. No optional policy is added; the nine existing palette opt-ins stay unchanged. The older plain and palette proposals remain held.
 
-The finite context reviews distinguish 36 OriginalSource endpoints and nine static pairs from the legal private validation-World scenes for `40359` and `40363`. Those two have no claimed Original-map occurrence. The separate `203ff` review covers five endpoints and two pairs. Coarse retained detail, texture-density boundaries and other recorded material limits remain qualified; no seamless or all-placement claim follows.
+Separate reviews cover 22 genuine endpoints and seven neighbor pairs, including five freshly checked reverse contexts for registered `203ff`. A legal private validation-World scene covers `203f8` and `203f9`, which have no Original-map occurrences; `203fa` has ten Original placements. Finer grain, relief and density boundaries retain their qualifications. This is not seamless, all-placement or complete-route approval.
 
-Validation accepts all 5,480 frames with zero rejects, plus 45 mods with one override. Three actual 1920×1080 SDL controls completed successfully at 120, 600 and 600 frames. Root viewed all three complete images and independently confirmed that their PNG bytes match the frozen SourceF H5463 controls. RGB and alpha comparisons measured zero changes across 6,220,800 pixels. These are bounded regression controls, with no claim that the seventeen new pictures appeared or that every placement or route was reviewed.
+Validation accepts all 5,483 frames with zero rejects, plus 45 mods with one override. Three actual 1920×1080 SDL controls completed successfully at 120, 600 and 600 frames. Root viewed all three full images and independently confirmed identical PNG bytes against frozen SourceF H5480. RGB and alpha comparisons measured zero changes across 6,220,800 pixels. These are bounded presentation controls, without a claim that the three new pictures appeared or that every placement or route was reviewed.
 
-SourceF, both binaries and Iron Coast Mission 2 version 1.0.3 remain unchanged. The existing SourceF runtime checks passed 113 Rust and 186 Python tests, with five existing Rust tests ignored; these are not new H5480 test runs. The latest closed native Windows result is SourceF H5463 at `1d0b2dda`: 401 passed, 26 ignored and none failed, including Mission 2 version 1.0.3. It does not establish native execution of this new artwork revision. See the [completion ledger](hd-completion.json), [backlog](hd-backlog.md) and [runtime evidence](hd-runtime-release.json) for exact scopes. Validated package checkpoint; Git history records publication.
+SourceF, both binaries and Mission 2 version 1.0.3 remain unchanged. Existing runtime and campaign tests retain their dated scopes. The latest closed native Windows result is SourceF H5463 at `1d0b2dda`, including Mission 2 version 1.0.3: 401 passed, 26 ignored and none failed. That is not a native Windows result for this artwork revision. The [completion ledger](hd-completion.json), [backlog](hd-backlog.md) and [runtime evidence](hd-runtime-release.json) record exact authorities and limits. Validated package checkpoint; Git history records publication.
 
 Preserved 17 October 2026 Source-update checkpoint at 5,384 (historical coverage): Current Source C+D runtime — 17 October 2026, published `a073f73f`: HD coverage remains **5,384 frames / 3,551 sequences**, with **369 originals remaining** (260 Terrain, 75 enemies/ground objects, 33 UI/other, one boss). Both executables are rebuilt; 90 Rust / 78 Python tests, HD validation and three exact 1080p regression controls pass. Five old Rust checks remain ignored. Source C+D native Windows CI is pending; the prior `58723547` result (361 passed / 26 ignored / zero failed) is a different epoch. Earlier material, context and QA records below remain historical; this source update adds no art approval.
 
@@ -60,7 +60,7 @@ The published 3,592-frame admission adds **427 source/material-qualified origina
 | Player and enemy projectiles | 51 | 51 | 0 | 18 |
 | Explosions and effects | 281 | 281 | 0 | 25 |
 | Equipment and pickups | 47 | 47 | 0 | 23 |
-| Terrain | 4,535 | 4,355 | 180 | 4 |
+| Terrain | 4,535 | 4,358 | 177 | 4 |
 | Menus, portraits, HUD and other pictures | 150 | 117 | 33 | mixed static / animated |
 
 The completion ledger retains `format_version: 1` with `ledger_schema: family_review_refs_v1`. Each approved asset uses a stable `coordinator_review_ref`; `family_reviews` stores the candidate/binding identities and exact full immutable external receipt once. The original 2,132 normalization reduced 53,594,880 bytes to 8,406,611 (84.31%) without changing approval or artwork. New registrations update only their own status/evidence; native preservation has a separate closed record.