SUPERSEDED ROUTE STATUS: Original castle -> room50 -> Secret Slide entry now
VERIFIED. See native-secret-slide-original-entry-verified-2026-10-25.txt.
Earlier failures below are historical; do not repeat their upgrade recommendation.

CORRECTION: The key/upper-hall routes below do not lead to Secret Slide. See
native-secret-slide-character-room-2026-10-25.txt for the verified room50 route
and two still-failed window approaches. Original entrance remains unverified.

Secret Slide original-castle route boundary - 2026-10-25

Status: PARTIALLY VERIFIED. This run checked the normal castle route with the
isolated two-Star Koopa save, using the current local executable
SHA256 FF4FDAEE69BA2FDA45D809ECA4E52BF7B3C9718AC0A93CF38668F1B31D797FF4.
Audio output was muted. It ran 10,000 frames and exited with code 0.

The original title/File A and exterior route reached castle level 2 at tick
2670. The player then reached the first-floor keyhole door at approximately
(-1075, 500, -1050) and remained against it in St_OnWall_Main. It did not
reach the upstairs level or Secret Slide. This run is evidence of a normal
route boundary, not a failure in the Secret Slide level or its Star box.

This isolated two-Star save does not have the required key progression for
the door. The game reported two Stars; no player, actor, collision or save
state was forced. Both isolated save files matched their seed SHA256 values
after the run. The captured frame-5000.bmp shows the keyhole door and Yoshi-
unrelated character model Mario; frame-9500.bmp records the continued wait.

The preceding castle-front-door run with the same save entered level 2 and
settled in the lobby. To continue toward the Secret Slide through ordinary
progression, first obtain the key through its normal course/boss route. A
separate QA-only run may use an established key-unlocked seed, but must be
reported as prerequisite-seeded and cannot claim fresh-save progression.
The direct development-pick route and the Secret Slide box's collection,
save/reload, and no-duplicate-credit tests remain distinct already-verified
milestones; the original entrance, Yoshi-specific box contact, and finish/timer
course completion remain open.

Case folder: work/native-muted-audio-walk-castle-slide-upper-floor-r1-20261025-20261021
Seed: work/koopa-repeat-save-seed-20261025

Key-prerequisite follow-up (separate, prerequisite-seeded QA save): The saved
40-Star/key-held QA fixture reached level 5 through the original castle doors
and staircase on the same executable. Yoshi climbed the red stairwell, and
the stage trace confirmed the level-2-to-level-5 transition at tick 3536. This
proves the key door is passable with the prerequisite already present; it is
not fresh-save key acquisition. The scout exited 0 at 8,000 frames with audio
muted and zero device samples; the fixture save matched its seed hash.

The shortened upper-floor route then reached waypoints through
5:-975:-3000:30 but did not reach its last point near (-900,-1500); Yoshi
remained against the inner stairwell wall in St_OnWall_Main. This is a route
incomplete result, not an identified collision defect. The existing full
geometry route in work/toad40-stair-and-upper-route-20261021.json includes
additional points around the enclosure and is the next evidence-based route
to use. The Secret Slide entrance itself remains unconfirmed.

Key-seeded case: work/native-muted-audio-walk-castle-slide-keyseed-upper-scout-r1-20261025-20261021

Full-route follow-up 2026-10-25: Replayed the complete `route` field from `work/toad40-stair-and-upper-route-20261021.json` using the prerequisite-seeded 40-Star/key-held save and current EXE FF4FDAEE69BA2FDA45D809ECA4E52BF7B3C9718AC0A93CF38668F1B31D797FF4. Original transitions level1->2 (tick2762) and level2->5 (tick3536) succeeded. Waypoints through index58 were reached; frame7000/9000 show Yoshi in the upstairs hall next to Toad, with the nearby painting and corridor visible. The last two narrow points were not logged as reached, and the Secret Slide portal was not activated. This is partial route acceptance only. Runtime exited0 at12000 frames, muted output with zero device samples; the isolated seed save SHA256 matched after the run. Case work/native-muted-audio-walk-castle-slide-full-upper-route-r1-20261025-20261021. Next inspect the upstairs visible paintings/exits around the final player position and target the original Secret Slide opening without state edits.
