[Roxas2712]

Adds API-3 warp(mapId, x, y, facing?) and remember_outdoor(mapId, x, y) on Gen1–3.

The public warp adapter and scripts share a pure destination planner. Whole-program preflight follows the reference engine's linear map context and validates subsequent object/block/movement rows against destination definitions without loading a live map. Dispatch validates live data again. Arrival binds the continuation to the destination map and idle runner, clears talking-NPC context, and waits for the foreground before running later rows. One-shot callbacks and a bounded native-transition deadline prevent stale continuations.

The already admitted native transition remains engine-owned on unload/timeout, so it can finish arrival bookkeeping and release its own locks. Busy destination scripts are preserved and cause the portable run to fail.

Dependency: merge #113 and prerequisites first. Focused change 4632d3a…7e62026.

Validation at clean head 7e620268d09f78d8fc01664ba2329eb6e3936763:

• 185 focused checks, including actual native transitions across four versions, destination runner replacement, post-warp native block edits, same-map runtime reuse, overlay pauses, unload cleanup, replay, native failures and deadline behavior.
• 206 existing public warp, 180 movement, 117 script-edit and 5,283 portable checks pass. The old unsupported-warp capability assertion is replaced with positive generation-aware travel coverage.
• 120 cross-engine comparisons / 240 isolated loader runs against clean Gen1 79ea62f45fb2ea8f65d081a109431e4eb1bbdb36, including warp followed by player/NPC movement.
• Full headless: 88/98 engine suites, SDK 3/3 and B30 pass.
• All-PR integration 73b750d26fe1c74d1a419aa536b470035608910a: 93/103 engine suites, SDK 3/3, B30 and 120/240 cross-engine checks.
• Both full commands exit 1 with exactly the same 27 prerequisite baseline FAIL lines; no additional failures. StyLua and git diff --check pass.

ROM-free tests use native logic with synthetic destination materialization. No ROM gameplay/pixel equivalence claim. Future geometry validation requires the relevant destination tileset; branches/native entry scripts may change conditions after admission, which are checked again at runtime.

Hosted Actions: API 3 contracts and ci are action_required (fork workflow approval). Hosted tests have not run; the results above are local.