diff --git a/.run/P36/delever/calibration.json b/.run/P36/delever/calibration.json
index 13e37da808..facb31c09d 100644
--- a/.run/P36/delever/calibration.json
+++ b/.run/P36/delever/calibration.json
@@ -1,7 +1,7 @@
 {
- "head": "bc16e5994",
+ "head": "c0bbd26c6",
  "stamp": "e34b6679685f",
- "generated": "2026-09-12 18:00",
+ "generated": "2026-09-12 18:07",
  "aliases": [
   "main",
   "md_SC07_004",
@@ -21,176 +21,176 @@
   "main": {
    "objects": 85,
    "identical": 85,
-   "seconds": 6.867000000000002,
-   "mean_s": 0.081
+   "seconds": 6.604,
+   "mean_s": 0.078
   },
   "md_SC07_004": {
    "objects": 1,
    "identical": 1,
-   "seconds": 0.505,
-   "mean_s": 0.505
+   "seconds": 0.527,
+   "mean_s": 0.527
   },
   "ov_SC03_015": {
    "objects": 32,
    "identical": 32,
-   "seconds": 4.68,
-   "mean_s": 0.146
+   "seconds": 4.619,
+   "mean_s": 0.144
   },
   "ov_SC04_011": {
    "objects": 28,
    "identical": 28,
-   "seconds": 3.917,
-   "mean_s": 0.14
+   "seconds": 3.8760000000000012,
+   "mean_s": 0.138
   }
  },
  "per_object_seconds": {
-  "build/src/800.o": 0.773,
-  "build/src/800_b.o": 0.082,
-  "build/src/800_b_2.o": 0.324,
-  "build/src/800_b_o0a.o": 0.066,
-  "build/src/800_c.o": 0.226,
-  "build/src/800b2.o": 0.089,
-  "build/src/apicard1.o": 0.071,
-  "build/src/apicard2.o": 0.076,
-  "build/src/apicard3.o": 0.066,
-  "build/src/apicard4.o": 0.067,
-  "build/src/apicard5.o": 0.064,
-  "build/src/apicard6.o": 0.083,
-  "build/src/apicard7.o": 0.079,
-  "build/src/boot.o": 0.108,
-  "build/src/gap.o": 0.073,
-  "build/src/libapi1.o": 0.087,
+  "build/src/800.o": 0.744,
+  "build/src/800_b.o": 0.098,
+  "build/src/800_b_2.o": 0.319,
+  "build/src/800_b_o0a.o": 0.063,
+  "build/src/800_c.o": 0.198,
+  "build/src/800b2.o": 0.092,
+  "build/src/apicard1.o": 0.063,
+  "build/src/apicard2.o": 0.056,
+  "build/src/apicard3.o": 0.068,
+  "build/src/apicard4.o": 0.066,
+  "build/src/apicard5.o": 0.074,
+  "build/src/apicard6.o": 0.06,
+  "build/src/apicard7.o": 0.089,
+  "build/src/boot.o": 0.088,
+  "build/src/gap.o": 0.064,
+  "build/src/libapi1.o": 0.065,
   "build/src/libapi2.o": 0.058,
-  "build/src/libc2_1.o": 0.065,
-  "build/src/libc2_2.o": 0.064,
-  "build/src/libcd1.o": 0.068,
-  "build/src/libcd2.o": 0.063,
-  "build/src/libetc.o": 0.059,
+  "build/src/libc2_1.o": 0.063,
+  "build/src/libc2_2.o": 0.058,
+  "build/src/libcd1.o": 0.072,
+  "build/src/libcd2.o": 0.057,
+  "build/src/libetc.o": 0.061,
   "build/src/libgpu.o": 0.062,
-  "build/src/libgpu2.o": 0.071,
-  "build/src/libgs1.o": 0.064,
-  "build/src/libgs2.o": 0.079,
-  "build/src/libgs3.o": 0.067,
-  "build/src/libgs4.o": 0.06,
-  "build/src/libgs5.o": 0.062,
-  "build/src/libgs6.o": 0.086,
+  "build/src/libgpu2.o": 0.067,
+  "build/src/libgs1.o": 0.058,
+  "build/src/libgs2.o": 0.051,
+  "build/src/libgs3.o": 0.056,
+  "build/src/libgs4.o": 0.059,
+  "build/src/libgs5.o": 0.061,
+  "build/src/libgs6.o": 0.076,
   "build/src/libgs7.o": 0.061,
-  "build/src/libgs8.o": 0.062,
-  "build/src/libgte1.o": 0.062,
-  "build/src/libgte10.o": 0.066,
-  "build/src/libgte11.o": 0.066,
-  "build/src/libgte12.o": 0.067,
-  "build/src/libgte13.o": 0.065,
-  "build/src/libgte14.o": 0.067,
-  "build/src/libgte15.o": 0.069,
-  "build/src/libgte16.o": 0.066,
-  "build/src/libgte17.o": 0.064,
-  "build/src/libgte18.o": 0.065,
-  "build/src/libgte19.o": 0.066,
-  "build/src/libgte2.o": 0.062,
-  "build/src/libgte20.o": 0.059,
-  "build/src/libgte21.o": 0.06,
-  "build/src/libgte22.o": 0.063,
-  "build/src/libgte23.o": 0.069,
-  "build/src/libgte24.o": 0.062,
-  "build/src/libgte25.o": 0.065,
+  "build/src/libgs8.o": 0.057,
+  "build/src/libgte1.o": 0.06,
+  "build/src/libgte10.o": 0.055,
+  "build/src/libgte11.o": 0.054,
+  "build/src/libgte12.o": 0.063,
+  "build/src/libgte13.o": 0.055,
+  "build/src/libgte14.o": 0.062,
+  "build/src/libgte15.o": 0.064,
+  "build/src/libgte16.o": 0.058,
+  "build/src/libgte17.o": 0.058,
+  "build/src/libgte18.o": 0.06,
+  "build/src/libgte19.o": 0.058,
+  "build/src/libgte2.o": 0.063,
+  "build/src/libgte20.o": 0.06,
+  "build/src/libgte21.o": 0.067,
+  "build/src/libgte22.o": 0.066,
+  "build/src/libgte23.o": 0.057,
+  "build/src/libgte24.o": 0.063,
+  "build/src/libgte25.o": 0.067,
   "build/src/libgte26.o": 0.062,
-  "build/src/libgte27.o": 0.062,
-  "build/src/libgte28.o": 0.066,
-  "build/src/libgte29.o": 0.061,
-  "build/src/libgte3.o": 0.063,
-  "build/src/libgte30.o": 0.061,
-  "build/src/libgte4.o": 0.06,
-  "build/src/libgte5.o": 0.068,
-  "build/src/libgte6.o": 0.066,
-  "build/src/libgte7.o": 0.062,
-  "build/src/libgte8.o": 0.062,
-  "build/src/libgte9.o": 0.062,
-  "build/src/libmcrd1.o": 0.073,
-  "build/src/libmcrd2.o": 0.063,
-  "build/src/libpad1.o": 0.066,
-  "build/src/libpad2.o": 0.068,
-  "build/src/sgap.o": 0.073,
-  "build/src/sgap_2.o": 0.065,
-  "build/src/sgap_3.o": 0.064,
-  "build/src/sgap_4.o": 0.072,
+  "build/src/libgte27.o": 0.066,
+  "build/src/libgte28.o": 0.076,
+  "build/src/libgte29.o": 0.06,
+  "build/src/libgte3.o": 0.055,
+  "build/src/libgte30.o": 0.07,
+  "build/src/libgte4.o": 0.062,
+  "build/src/libgte5.o": 0.059,
+  "build/src/libgte6.o": 0.058,
+  "build/src/libgte7.o": 0.064,
+  "build/src/libgte8.o": 0.064,
+  "build/src/libgte9.o": 0.066,
+  "build/src/libmcrd1.o": 0.076,
+  "build/src/libmcrd2.o": 0.067,
+  "build/src/libpad1.o": 0.065,
+  "build/src/libpad2.o": 0.07,
+  "build/src/sgap.o": 0.063,
+  "build/src/sgap_2.o": 0.07,
+  "build/src/sgap_3.o": 0.068,
+  "build/src/sgap_4.o": 0.073,
   "build/src/sgap_5.o": 0.064,
-  "build/src/sgap_6.o": 0.06,
-  "build/src/sgap_8.o": 0.07,
-  "build/src/snd1.o": 0.069,
-  "build/src/snd10.o": 0.067,
-  "build/src/snd11.o": 0.073,
+  "build/src/sgap_6.o": 0.063,
+  "build/src/sgap_8.o": 0.076,
+  "build/src/snd1.o": 0.075,
+  "build/src/snd10.o": 0.061,
+  "build/src/snd11.o": 0.067,
   "build/src/snd12.o": 0.065,
-  "build/src/snd2.o": 0.068,
-  "build/src/snd3.o": 0.062,
-  "build/src/snd4.o": 0.075,
-  "build/src/snd5.o": 0.065,
-  "build/src/snd6.o": 0.069,
-  "build/src/snd7.o": 0.071,
-  "build/src/snd8.o": 0.066,
-  "build/src/snd9.o": 0.076,
-  "build/src/md_SC07_004/md_SC07_004.o": 0.505,
-  "build/src/ov_SC03_015/ov_SC03_015.o": 0.136,
-  "build/src/ov_SC03_015/ov_SC03_015_after.o": 0.522,
+  "build/src/snd2.o": 0.071,
+  "build/src/snd3.o": 0.069,
+  "build/src/snd4.o": 0.07,
+  "build/src/snd5.o": 0.07,
+  "build/src/snd6.o": 0.068,
+  "build/src/snd7.o": 0.065,
+  "build/src/snd8.o": 0.063,
+  "build/src/snd9.o": 0.069,
+  "build/src/md_SC07_004/md_SC07_004.o": 0.527,
+  "build/src/ov_SC03_015/ov_SC03_015.o": 0.155,
+  "build/src/ov_SC03_015/ov_SC03_015_after.o": 0.488,
   "build/src/ov_SC03_015/ov_SC03_015_jr_8012ACE0.o": 0.404,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80135888.o": 0.07,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80135A4C.o": 0.067,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80135D20.o": 0.135,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_801380E0.o": 0.163,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8013C98C.o": 0.111,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8013F350.o": 0.081,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8013FFD8.o": 0.07,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80140608.o": 0.187,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8015444C.o": 0.093,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80154C24.o": 0.185,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_801588CC.o": 0.098,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80159C84.o": 0.058,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8015A3C8.o": 0.069,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8015AE2C.o": 0.09,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8015C32C.o": 0.45,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8016AB6C.o": 0.263,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80171B4C.o": 0.108,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80135888.o": 0.075,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80135A4C.o": 0.063,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80135D20.o": 0.122,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_801380E0.o": 0.168,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8013C98C.o": 0.116,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8013F350.o": 0.079,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8013FFD8.o": 0.08,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80140608.o": 0.184,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8015444C.o": 0.071,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80154C24.o": 0.167,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_801588CC.o": 0.091,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80159C84.o": 0.059,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8015A3C8.o": 0.057,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8015AE2C.o": 0.091,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8015C32C.o": 0.455,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8016AB6C.o": 0.251,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80171B4C.o": 0.096,
   "build/src/ov_SC03_015/ov_SC03_015_jr_801734BC.o": 0.199,
   "build/src/ov_SC03_015/ov_SC03_015_jr_801789AC.o": 0.058,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80178D40.o": 0.103,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8017A4AC.o": 0.069,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8017AE2C.o": 0.16,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_8017EB7C.o": 0.19,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_80184440.o": 0.051,
-  "build/src/ov_SC03_015/ov_SC03_015_jr_801848E4.o": 0.258,
-  "build/src/ov_SC03_015/ov_SC03_015_o0b.o": 0.06,
-  "build/src/ov_SC03_015/ov_SC03_015_o0c.o": 0.055,
-  "build/src/ov_SC03_015/ov_SC03_015_o0d.o": 0.05,
-  "build/src/ov_SC03_015/ov_SC03_015_o0e.o": 0.067,
-  "build/src/ov_SC04_011/ov_SC04_011.o": 0.116,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80178D40.o": 0.105,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8017A4AC.o": 0.066,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8017AE2C.o": 0.165,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_8017EB7C.o": 0.184,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_80184440.o": 0.048,
+  "build/src/ov_SC03_015/ov_SC03_015_jr_801848E4.o": 0.286,
+  "build/src/ov_SC03_015/ov_SC03_015_o0b.o": 0.056,
+  "build/src/ov_SC03_015/ov_SC03_015_o0c.o": 0.057,
+  "build/src/ov_SC03_015/ov_SC03_015_o0d.o": 0.061,
+  "build/src/ov_SC03_015/ov_SC03_015_o0e.o": 0.062,
+  "build/src/ov_SC04_011/ov_SC04_011.o": 0.12,
   "build/src/ov_SC04_011/ov_SC04_011_after.o": 0.422,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8012ACE0.o": 0.358,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80135888.o": 0.053,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80135A4C.o": 0.047,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80135D20.o": 0.125,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8012ACE0.o": 0.333,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80135888.o": 0.045,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80135A4C.o": 0.05,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80135D20.o": 0.104,
   "build/src/ov_SC04_011/ov_SC04_011_jr_801380E0.o": 0.149,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8013C98C.o": 0.108,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8013F350.o": 0.073,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8013FFD8.o": 0.061,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80140608.o": 0.166,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8015444C.o": 0.072,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80154C24.o": 0.166,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_801588CC.o": 0.088,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80159C84.o": 0.065,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8015A3C8.o": 0.069,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8015AE2C.o": 0.094,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8015C32C.o": 0.36,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8016AB6C.o": 0.209,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80171B4C.o": 0.095,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_801734BC.o": 0.162,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8013C98C.o": 0.112,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8013F350.o": 0.075,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8013FFD8.o": 0.06,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80140608.o": 0.178,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015444C.o": 0.07,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80154C24.o": 0.158,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_801588CC.o": 0.086,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80159C84.o": 0.064,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015A3C8.o": 0.068,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015AE2C.o": 0.098,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8015C32C.o": 0.357,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8016AB6C.o": 0.224,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80171B4C.o": 0.096,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_801734BC.o": 0.182,
   "build/src/ov_SC04_011/ov_SC04_011_jr_801789AC.o": 0.059,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_80178D40.o": 0.09,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8017A4AC.o": 0.067,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8017AE2C.o": 0.097,
-  "build/src/ov_SC04_011/ov_SC04_011_jr_8017D494.o": 0.439,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_80178D40.o": 0.091,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8017A4AC.o": 0.059,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8017AE2C.o": 0.095,
+  "build/src/ov_SC04_011/ov_SC04_011_jr_8017D494.o": 0.427,
   "build/src/ov_SC04_011/ov_SC04_011_o0b.o": 0.045,
-  "build/src/ov_SC04_011/ov_SC04_011_o0c.o": 0.062
+  "build/src/ov_SC04_011/ov_SC04_011_o0c.o": 0.049
  },
  "ok": true,
- "seconds": 2.1
+ "seconds": 2.0
 }
diff --git a/.run/P37/baseline/r22_t4_sig1.log b/.run/P37/baseline/r22_t4_sig1.log
new file mode 100644
index 0000000000..aeaa4fc42c
--- /dev/null
+++ b/.run/P37/baseline/r22_t4_sig1.log
@@ -0,0 +1,476 @@
+clean: removed build/, expected/, and the regenerated splat tree (asm/, assets/, undefined_*_auto.txt).
+disc-extract: up to date — extracted/retail/ matches the committed manifest (sha1 e5c6019249dec3c71bb2cf40658a78439dddb037)
+splat 0.41.0 (powered by spimdisasm 1.41.0)
+
  0%|          | 0/1096 [00:00<?, ?it/s]
Loading symbols (symbols.us):   0%|          | 0/1096 [00:00<?, ?it/s]
Loading symbols (symbols.us): 100%|██████████| 1096/1096 [00:00<00:00, 232721.98it/s]
+
  0%|          | 0/47 [00:00<?, ?it/s]
Loading symbols (symbols.us.ram):   0%|          | 0/47 [00:00<?, ?it/s]
Loading symbols (symbols.us.ram): 100%|██████████| 47/47 [00:00<00:00, 668245.04it/s]
+
  0%|          | 0/2 [00:00<?, ?it/s]
Scanning header:   0%|          | 0/2 [00:00<?, ?it/s]
Scanning main:   0%|          | 0/2 [00:00<?, ?it/s]  
+Rodata segment '800' may belong to the text segment '800'
+    Based on the usage from the function LzssDecodeSector to the symbol jtbl_80072A38
+
+The rodata segment '800' has jumptables that are not aligned properly file-wise, indicating one or more likely file split.
+File split suggestions for this segment will follow in config yaml format:
+      - [0x6324C, .rodata]
+      - [0x63388, .rodata]
+      - [0x633FC, .rodata]
+
+
+Rodata segment '800_b' may belong to the text segment '800_b'
+    Based on the usage from the function func_8002B0B4 to the symbol jtbl_80072E44
+
+Rodata segment '800_b_2' may belong to the text segment '800_b_2'
+    Based on the usage from the function func_8002DC68 to the symbol jtbl_80072F3C
+
+The rodata segment '800_b_2' has jumptables that are not aligned properly file-wise, indicating one or more likely file split.
+File split suggestions for this segment will follow in config yaml format:
+      - [0x63920, .rodata]
+
+
+Rodata segment '800_c' may belong to the text segment '800_c'
+    Based on the usage from the function func_80035270 to the symbol jtbl_800732A0
+
Scanning main: 100%|██████████| 2/2 [00:01<00:00,  1.71it/s]
Scanning main: 100%|██████████| 2/2 [00:01<00:00,  1.70it/s]
+
  0%|          | 0/2 [00:00<?, ?it/s]
Splitting header:   0%|          | 0/2 [00:00<?, ?it/s]
Splitting main:   0%|          | 0/2 [00:00<?, ?it/s]  
Splitting main: 100%|██████████| 2/2 [00:00<00:00,  3.01it/s]
Splitting main: 100%|██████████| 2/2 [00:00<00:00,  3.01it/s]
+
  0%|          | 0/2 [00:00<?, ?it/s]
Linker script header:   0%|          | 0/2 [00:00<?, ?it/s]
Linker script main:   0%|          | 0/2 [00:00<?, ?it/s]  
Linker script main: 100%|██████████| 2/2 [00:00<00:00, 110.42it/s]
+Split 340 KB (82.28%) in defined segments
+              header:     2 KB (0.50%) 1 split, 0 cached
+                   c:   338 KB (81.78%) 85 split, 0 cached
+             unknown:      0 B (0.00%) from unknown bin files
+ld_interleave --order: .main island = 8 pieces [53198.data.o, 800.o, 63470.data.o, 800_b.o, 800_b_2.o, 63940.data.o, 800_c.o, 63C4C.data.o]; pre=0 text=85 empties=166 bss=85
+[ OK ] resident
+[ OK ] ov_SC05_000
+[ OK ] ov_SC01_000
+[ OK ] ov_SC04_000
+[ OK ] ov_SC06_000
+[ OK ] ov_SC01_005
+[ OK ] ov_SC03_002
+[ OK ] ov_SC01_077
+[ OK ] ov_SC01_006
+[ OK ] ov_SC04_019
+[ OK ] ov_SC02_000
+[ OK ] ov_SC04_018
+[ OK ] ov_SC02_003
+[ OK ] ov_SC03_001
+[ OK ] ov_SC03_006
+[ OK ] ov_SC01_004
+[ OK ] ov_SC01_001
+[ OK ] ov_SC01_008
+[ OK ] ov_SC01_074
+[ OK ] ov_SC07_000
+[ OK ] ov_SC02_004
+[ OK ] ov_SC02_015
+[ OK ] ov_SC02_021
+[ OK ] ov_SC01_080
+[ OK ] ov_SC01_009
+[ OK ] ov_SC02_016
+[ OK ] ov_SC01_084
+[ OK ] ov_SC02_026
+[ OK ] ov_SC02_031
+[ OK ] ov_SC02_028
+[ OK ] ov_SC02_005
+[ OK ] ov_SC02_039
+[ OK ] ov_SC02_027
+[ OK ] ov_SC02_011
+[ OK ] ov_SC02_035
+[ OK ] ov_SC03_003
+[ OK ] ov_SC02_017
+[ OK ] ov_SC02_041
+[ OK ] ov_SC03_012
+[ OK ] ov_SC03_011
+[ OK ] ov_SC03_010
+[ OK ] ov_SC03_013
+[ OK ] ov_SC03_023
+[ OK ] ov_SC03_007
+[ OK ] ov_SC03_024
+[ OK ] ov_SC03_031
+[ OK ] ov_SC03_092
+[ OK ] ov_SC03_029
+[ OK ] ov_SC03_089
+[ OK ] ov_SC03_014
+[ OK ] ov_SC03_090
+[ OK ] ov_SC03_015
+[ OK ] ov_SC03_095
+[ OK ] ov_SC03_028
+[ OK ] ov_SC03_030
+[ OK ] ov_SC03_091
+[ OK ] ov_SC03_093
+[ OK ] ov_SC03_094
+[ OK ] ov_SC03_096
+[ OK ] ov_SC03_097
+[ OK ] ov_SC03_101
+[ OK ] ov_SC03_109
+[ OK ] ov_SC03_099
+[ OK ] ov_SC03_110
+[ OK ] ov_SC03_108
+[ OK ] ov_SC03_100
+[ OK ] ov_SC03_102
+[ OK ] ov_SC03_098
+[ OK ] ov_SC03_112
+[ OK ] ov_SC03_113
+[ OK ] ov_SC03_111
+[ OK ] ov_SC03_115
+[ OK ] ov_SC03_114
+[ OK ] ov_SC03_103
+[ OK ] ov_SC03_104
+[ OK ] ov_SC03_105
+[ OK ] ov_SC03_116
+[ OK ] ov_SC03_126
+[ OK ] ov_SC04_003
+[ OK ] ov_SC04_008
+[ OK ] ov_SC04_006
+[ OK ] ov_SC04_009
+[ OK ] ov_SC03_121
+[ OK ] ov_SC03_117
+[ OK ] ov_SC04_002
+[ OK ] ov_SC04_004
+[ OK ] ov_SC03_125
+[ OK ] ov_SC04_007
+[ OK ] ov_SC04_005
+[ OK ] ov_SC03_118
+[ OK ] ov_SC03_119
+[ OK ] ov_SC04_010
+[ OK ] ov_SC03_124
+[ OK ] ov_SC04_012
+[ OK ] ov_SC04_021
+[ OK ] ov_SC05_006
+[ OK ] ov_SC04_016
+[ OK ] ov_SC05_002
+[ OK ] ov_SC05_003
+[ OK ] ov_SC05_004
+[ OK ] ov_SC05_001
+[ OK ] ov_SC05_009
+[ OK ] ov_SC05_007
+[ OK ] ov_SC04_020
+[ OK ] ov_SC05_005
+[ OK ] ov_SC04_015
+[ OK ] ov_SC05_008
+[ OK ] ov_SC04_011
+[ OK ] ov_SC05_011
+[ OK ] ov_SC05_010
+[ OK ] ov_SC05_019
+[ OK ] ov_SC06_015
+[ OK ] ov_SC06_008
+[ OK ] ov_SC06_013
+[ OK ] ov_SC06_016
+[ OK ] ov_SC06_014
+[ OK ] ov_SC06_011
+[ OK ] ov_SC06_010
+[ OK ] ov_SC05_017
+[ OK ] ov_SC05_018
+[ OK ] ov_SC06_020
+[ OK ] ov_SC06_006
+[ OK ] ov_SC06_027
+[ OK ] ov_SC06_018
+[ OK ] ov_SC06_025
+[ OK ] ov_SC06_022
+[ OK ] ov_SC07_008
+[ OK ] ov_SC06_024
+[ OK ] md_MAIN_013
+[ OK ] md_MAIN_014
+[ OK ] ov_SC07_002
+[ OK ] md_MAIN_016
+[ OK ] md_MAIN_015
+[ OK ] ov_SC07_001
+[ OK ] md_MAIN_017
+[ OK ] md_MAIN_018
+[ OK ] ov_SC06_030
+[ OK ] md_MAIN_020
+[ OK ] md_MAIN_019
+[ OK ] md_MAIN_021
+[ OK ] md_MAIN_022
+[ OK ] md_MAIN_024
+[ OK ] md_MAIN_023
+[ OK ] md_MAIN_025
+[ OK ] md_MAIN_026
+[ OK ] md_MAIN_027
+[ OK ] md_MAIN_028
+[ OK ] ov_MAIN_012
+[ OK ] md_MAIN_029
+[ OK ] ov_SC07_011
+[ OK ] md_MAIN_030
+[ OK ] ov_SC07_009
+[ OK ] md_MAIN_031
+[ OK ] md_MAIN_032
+[ OK ] ov_SC06_032
+[ OK ] md_MAIN_033
+[ OK ] md_MAIN_035
+[ OK ] md_MAIN_034
+[ OK ] md_MAIN_036
+[ OK ] md_MAIN_037
+[ OK ] md_MAIN_039
+[ OK ] md_MAIN_038
+[ OK ] md_MAIN_040
+[ OK ] md_MAIN_041
+[ OK ] md_MAIN_042
+[ OK ] md_MAIN_043
+[ OK ] md_MAIN_044
+[ OK ] md_MAIN_045
+[ OK ] ov_SC06_033
+[ OK ] md_MAIN_046
+[ OK ] md_MAIN_047
+[ OK ] ov_SC06_029
+[ OK ] md_MAIN_008
+[ OK ] md_MAIN_001
+[ OK ] ov_SC07_010
+[ OK ] md_MAIN_011
+[ OK ] md_SC03_073
+[ OK ] md_SC03_074
+[ OK ] md_SC03_075
+[ OK ] md_SC03_078
+[ OK ] md_SC03_077
+[ OK ] md_SC03_076
+[ OK ] md_SC03_132
+[ OK ] md_SC03_133
+[ OK ] ov_SC07_007
+[ OK ] md_SC03_079
+[ OK ] md_SC03_137
+[ OK ] md_SC03_134
+[ OK ] md_SC03_135
+[ OK ] md_SC03_136
+[ OK ] ov_SC03_107
+[ OK ] md_SC03_138
+[ OK ] md_SC04_024
+[ OK ] md_SC04_025
+[ OK ] md_MAIN_003
+[ OK ] md_SC04_029
+[ OK ] md_SC04_026
+[ OK ] md_SC04_028
+[ OK ] md_SC04_027
+[ OK ] md_SC05_023
+[ OK ] md_SC05_024
+[ OK ] md_SC05_028
+[ OK ] md_SC05_025
+[ OK ] md_MAIN_007
+[ OK ] md_SC04_030
+[ OK ] md_MAIN_009
+[ OK ] md_SC05_027
+[ OK ] md_SC05_029
+[ OK ] md_SC03_053
+[ OK ] md_SC05_026
+[ OK ] md_SC03_056
+[ OK ] md_SC03_054
+[ OK ] md_SC02_009
+[ OK ] ov_SC02_037
+[ OK ] ov_SC07_006
+[ OK ] md_SC07_004
+[ OK ] md_SC07_003
+extract-all: 217 extracted, 0 failed of 217 (+ main, serial)
+[ OK ] resident
+[ OK ] ov_SC01_000
+[ OK ] ov_SC05_000
+[ OK ] ov_SC04_000
+[ OK ] ov_SC01_005
+[ OK ] ov_SC01_001
+[ OK ] ov_SC01_006
+[ OK ] ov_SC03_006
+[ OK ] ov_SC03_002
+[ OK ] ov_SC06_000
+[ OK ] ov_SC01_077
+[ OK ] ov_SC04_018
+[ OK ] ov_SC04_019
+[ OK ] ov_SC03_001
+[ OK ] ov_SC02_000
+[ OK ] ov_SC02_003
+[ OK ] ov_SC01_004
+[ OK ] ov_SC07_000
+[ OK ] ov_SC01_008
+[ OK ] ov_SC01_074
+[ OK ] ov_SC02_004
+[ OK ] ov_SC01_080
+[ OK ] ov_SC01_009
+[ OK ] ov_SC02_015
+[ OK ] ov_SC01_084
+[ OK ] ov_SC02_016
+[ OK ] ov_SC02_021
+[ OK ] ov_SC02_026
+[ OK ] ov_SC02_011
+[ OK ] ov_SC02_017
+[ OK ] ov_SC02_005
+[ OK ] ov_SC02_039
+[ OK ] ov_SC02_031
+[ OK ] ov_SC02_027
+[ OK ] ov_SC02_035
+[ OK ] ov_SC03_003
+[ OK ] ov_SC02_041
+[ OK ] ov_SC02_028
+[ OK ] ov_SC03_010
+[ OK ] ov_SC03_012
+[ OK ] ov_SC03_007
+[ OK ] ov_SC03_011
+[ OK ] ov_SC03_023
+[ OK ] ov_SC03_013
+[ OK ] ov_SC03_014
+[ OK ] ov_SC03_015
+[ OK ] ov_SC03_030
+[ OK ] ov_SC03_024
+[ OK ] ov_SC03_031
+[ OK ] ov_SC03_029
+[ OK ] ov_SC03_089
+[ OK ] ov_SC03_028
+[ OK ] ov_SC03_092
+[ OK ] main
+[ OK ] ov_SC03_090
+[ OK ] ov_SC03_093
+[ OK ] ov_SC03_095
+[ OK ] ov_SC03_091
+[ OK ] ov_SC03_094
+[ OK ] ov_SC03_096
+[ OK ] ov_SC03_097
+[ OK ] ov_SC03_098
+[ OK ] ov_SC03_099
+[ OK ] ov_SC03_100
+[ OK ] ov_SC03_101
+[ OK ] ov_SC03_102
+[ OK ] ov_SC03_109
+[ OK ] ov_SC03_103
+[ OK ] ov_SC03_108
+[ OK ] ov_SC03_110
+[ OK ] ov_SC03_111
+[ OK ] ov_SC03_114
+[ OK ] ov_SC03_113
+[ OK ] ov_SC03_104
+[ OK ] ov_SC03_105
+[ OK ] ov_SC03_112
+[ OK ] ov_SC03_115
+[ OK ] ov_SC03_116
+[ OK ] ov_SC03_117
+[ OK ] ov_SC03_126
+[ OK ] ov_SC03_118
+[ OK ] ov_SC03_121
+[ OK ] ov_SC03_119
+[ OK ] ov_SC03_125
+[ OK ] ov_SC04_003
+[ OK ] ov_SC04_004
+[ OK ] ov_SC04_002
+[ OK ] ov_SC04_008
+[ OK ] ov_SC04_006
+[ OK ] ov_SC04_005
+[ OK ] ov_SC03_124
+[ OK ] ov_SC04_007
+[ OK ] ov_SC04_009
+[ OK ] ov_SC04_010
+[ OK ] ov_SC04_012
+[ OK ] ov_SC04_016
+[ OK ] ov_SC04_021
+[ OK ] ov_SC04_015
+[ OK ] ov_SC04_020
+[ OK ] ov_SC04_011
+[ OK ] ov_SC05_002
+[ OK ] ov_SC05_006
+[ OK ] ov_SC05_004
+[ OK ] ov_SC05_005
+[ OK ] ov_SC05_001
+[ OK ] ov_SC05_003
+[ OK ] ov_SC05_007
+[ OK ] ov_SC05_008
+[ OK ] ov_SC05_009
+[ OK ] ov_SC05_010
+[ OK ] ov_SC05_011
+[ OK ] ov_SC05_019
+[ OK ] ov_SC06_011
+[ OK ] ov_SC06_013
+[ OK ] ov_SC06_015
+[ OK ] ov_SC06_014
+[ OK ] ov_SC05_018
+[ OK ] ov_SC06_006
+[ OK ] ov_SC06_008
+[ OK ] ov_SC06_010
+[ OK ] ov_SC06_016
+[ OK ] ov_SC05_017
+[ OK ] ov_SC06_020
+[ OK ] ov_SC06_018
+[ OK ] ov_SC06_022
+[ OK ] ov_SC06_024
+[ OK ] ov_SC06_027
+[ OK ] ov_SC06_025
+[ OK ] md_MAIN_013
+[ OK ] md_MAIN_014
+[ OK ] ov_SC07_009
+[ OK ] ov_SC07_008
+[ OK ] md_MAIN_016
+[ OK ] md_MAIN_015
+[ OK ] ov_SC07_001
+[ OK ] md_MAIN_017
+[ OK ] ov_SC06_030
+[ OK ] md_MAIN_018
+[ OK ] md_MAIN_020
+[ OK ] md_MAIN_019
+[ OK ] ov_SC07_002
+[ OK ] md_MAIN_021
+[ OK ] md_MAIN_022
+[ OK ] md_MAIN_023
+[ OK ] md_MAIN_024
+[ OK ] md_MAIN_025
+[ OK ] md_MAIN_026
+[ OK ] md_MAIN_027
+[ OK ] md_MAIN_028
+[ OK ] md_MAIN_029
+[ OK ] md_MAIN_030
+[ OK ] ov_SC06_029
+[ OK ] md_MAIN_031
+[ OK ] md_MAIN_032
+[ OK ] md_MAIN_033
+[ OK ] md_MAIN_035
+[ OK ] md_MAIN_034
+[ OK ] md_MAIN_037
+[ OK ] md_MAIN_036
+[ OK ] md_MAIN_038
+[ OK ] ov_SC07_010
+[ OK ] md_MAIN_039
+[ OK ] md_MAIN_040
+[ OK ] md_MAIN_042
+[ OK ] md_MAIN_041
+[ OK ] ov_SC07_007
+[ OK ] md_MAIN_043
+[ OK ] ov_SC07_006
+[ OK ] md_MAIN_045
+[ OK ] md_MAIN_044
+[ OK ] md_MAIN_046
+[ OK ] md_MAIN_008
+[ OK ] md_MAIN_001
+[ OK ] md_MAIN_047
+[ OK ] md_MAIN_011
+[ OK ] md_SC03_073
+[ OK ] md_SC03_074
+[ OK ] ov_MAIN_012
+[ OK ] ov_SC06_032
+[ OK ] md_SC03_075
+[ OK ] ov_SC06_033
+[ OK ] md_SC03_078
+[ OK ] md_SC03_079
+[ OK ] ov_SC07_011
+[ OK ] md_SC03_132
+[ OK ] md_SC03_133
+[ OK ] md_SC03_077
+[ OK ] md_SC03_134
+[ OK ] md_SC03_076
+[ OK ] md_SC03_137
+[ OK ] md_SC07_003
+[ OK ] md_SC03_138
+[ OK ] md_SC04_024
+[ OK ] md_SC04_025
+[ OK ] md_SC03_136
+[ OK ] md_SC04_026
+[ OK ] md_MAIN_003
+[ OK ] md_SC03_135
+[ OK ] md_SC04_029
+[ OK ] md_SC04_030
+[ OK ] md_SC05_023
+[ OK ] md_SC04_028
+[ OK ] md_SC05_024
+[ OK ] md_SC05_025
+[ OK ] md_SC04_027
+[ OK ] md_SC05_028
+[ OK ] md_SC05_029
+[ OK ] md_MAIN_007
+[ OK ] md_MAIN_009
+[ OK ] md_SC03_053
+[ OK ] md_SC02_009
+[ OK ] md_SC05_027
+[ OK ] md_SC07_004
+[ OK ] md_SC03_056
+[ OK ] md_SC03_054
+[ OK ] md_SC05_026
+[ OK ] ov_SC02_037
+[ OK ] ov_SC03_107
+check-all: 218 passed, 0 failed of 218
+wall=85.91 s
+exit=0
diff --git a/.run/P37/restruct/apply_t4_sig1.log b/.run/P37/restruct/apply_t4_sig1.log
new file mode 100644
index 0000000000..4aedd8fac8
--- /dev/null
+++ b/.run/P37/restruct/apply_t4_sig1.log
@@ -0,0 +1,3 @@
+18:07:57 signature func_800385C0: `void func_800385C0(s32 a0)` — 1 definition(s) in ['src/800_c.c'], 3 declarations in 1 other files
+18:07:57 signature func_800385C0: IDENTICAL on every recipe (2 objects, 0.3 s) — 2 files written
+18:07:57 restruct: signature func_800385C0 — IDENTICAL · 2 files written
diff --git a/.run/P37/restruct/calibrate_t4_sig1.log b/.run/P37/restruct/calibrate_t4_sig1.log
new file mode 100644
index 0000000000..d77dc3598a
--- /dev/null
+++ b/.run/P37/restruct/calibrate_t4_sig1.log
@@ -0,0 +1,5 @@
+delever_oracle --calibrate main md_SC07_004 ov_SC03_015 ov_SC04_011: 146/146 objects byte-identical untouched; twin checks 32 (0 mismatch); positive control DIFFERS on build/src/800.o; 2.0 s — OK
+   main           85/85 identical, mean 0.078 s per object
+   md_SC07_004    1/1 identical, mean 0.527 s per object
+   ov_SC03_015    32/32 identical, mean 0.144 s per object
+   ov_SC04_011    28/28 identical, mean 0.138 s per object
diff --git a/.run/P37/restruct/cycle_t4sig.log b/.run/P37/restruct/cycle_t4sig.log
new file mode 100644
index 0000000000..8b536e0ebb
--- /dev/null
+++ b/.run/P37/restruct/cycle_t4sig.log
@@ -0,0 +1 @@
+log: t4_sig1
diff --git a/.run/P37/restruct/ledger.jsonl b/.run/P37/restruct/ledger.jsonl
index 6e86341936..a3c0032228 100644
--- a/.run/P37/restruct/ledger.jsonl
+++ b/.run/P37/restruct/ledger.jsonl
@@ -141474,3 +141474,5 @@
 {"ts": "2026-09-12 18:02:26", "label": "t4_HD4", "rung": "D", "calib": {"head": "bc16e5994", "stamp": "e34b6679685f"}, "tu": "src/shared/ov/func_8018AF00.h", "unit": "decl:func_8018A168", "callee": "func_8018A168", "header": true, "nhash_before": "717d108223dc", "nhash_after": "717d108223dc", "verdict": "DECL-NONE", "cause": "no visible definition (external to this TU's binary, or argcheck's alias-resolved row)", "sites": []}
 {"ts": "2026-09-12 18:02:26", "label": "t4_HD4", "rung": "D", "calib": {"head": "bc16e5994", "stamp": "e34b6679685f"}, "tu": "src/shared/ov/func_8018C1E0__5fb4815c.h", "unit": "decl:func_80178BF8", "callee": "func_80178BF8", "header": true, "nhash_before": "a7fa6396f387", "nhash_after": "a7fa6396f387", "verdict": "DECL-NONE", "cause": "no visible definition (external to this TU's binary, or argcheck's alias-resolved row)", "sites": []}
 {"ts": "2026-09-12 18:02:26", "label": "t4_HD4", "rung": "D", "calib": {"head": "bc16e5994", "stamp": "e34b6679685f"}, "tu": "src/shared/ov/func_8018C3F0__52d19dc6.h", "unit": "decl:func_80178BF8", "callee": "func_80178BF8", "header": true, "nhash_before": "a7fa6396f387", "nhash_after": "a7fa6396f387", "verdict": "DECL-NONE", "cause": "no visible definition (external to this TU's binary, or argcheck's alias-resolved row)", "sites": []}
+{"ts": "2026-09-12 18:07:57", "label": "t4_sig1", "rung": "D", "calib": {"head": "c0bbd26c6", "stamp": "e34b6679685f"}, "tu": "src/800_c.c", "unit": "def:func_800385C0", "callee": "func_800385C0", "signature": "void func_800385C0(s32 a0)", "definition": true, "verdict": "DECL-CANON", "err": "", "nhash_before": null, "nhash_after": null, "sites": []}
+{"ts": "2026-09-12 18:07:57", "label": "t4_sig1", "rung": "D", "calib": {"head": "c0bbd26c6", "stamp": "e34b6679685f"}, "tu": "src/800_b_2.c", "unit": "def:func_800385C0", "callee": "func_800385C0", "signature": "void func_800385C0(s32 a0)", "definition": false, "verdict": "DECL-CANON", "err": "", "nhash_before": null, "nhash_after": null, "sites": []}
diff --git a/.run/P37/restruct/run_t4_sig1.log b/.run/P37/restruct/run_t4_sig1.log
new file mode 100644
index 0000000000..50dc7fe222
--- /dev/null
+++ b/.run/P37/restruct/run_t4_sig1.log
@@ -0,0 +1,5 @@
+18:07:57 signature func_800385C0: `void func_800385C0(s32 a0)` — 1 definition(s) in ['src/800_c.c'], 3 declarations in 1 other files
+18:07:57 signature func_800385C0: IDENTICAL on every recipe (2 objects, 0.3 s) — 2 files written
+18:07:57 restruct: signature func_800385C0 — IDENTICAL · 2 files written
+t4_sig1 wall=44.52 s
+exit=0
diff --git a/.run/P37/restruct/snapshot_t4_sig1.log b/.run/P37/restruct/snapshot_t4_sig1.log
new file mode 100644
index 0000000000..fd22f3fafb
--- /dev/null
+++ b/.run/P37/restruct/snapshot_t4_sig1.log
@@ -0,0 +1 @@
+delever_oracle --snapshot-baseline: 7428 object(s) under .run/P36/delever/baseline at c0bbd26c6; link inputs for 218/218 binaries under .run/P36/delever/baseline/_link (links.json)
diff --git a/phase-ends/CURRENT_PHASE.md b/phase-ends/CURRENT_PHASE.md
index bdf9da7800..daeb284d88 100644
--- a/phase-ends/CURRENT_PHASE.md
+++ b/phase-ends/CURRENT_PHASE.md
@@ -587,7 +587,9 @@ bucketed by what each bucket needs before any plan is proposed. **Candidates for
   with a literal my own command line contained killed my shell — exit 144, R79 in read form; the bracketed pattern `restruct_cycl[e]` is the
   safe spelling.)
 
-## 🛑 SESSION CHECKPOINT — S107 (2026-09-12, FINAL — written for a FRESH session at 84 % context; the session's last commit follows this): gate 1 APPROVED, **T0 ☑ T1 ☑ T2 ☑ T3 ☑ — T4 IN PROGRESS (☐)** — 🛑 **T4 NEXT: resume the declaration layer where the cycle stopped (below, §1 "T4 — where it stands and the exact next commands"); xHigh** | R22 `check-all: 218 passed, 0 failed of 218` at `f2b58011e` (every one of the 21 T4 commits carries its own) | HEAD after this commit is the checkpoint's commit; tree clean; nothing pushed after `79b2f6f15` (Drew pushes, R6) | last batch `t4_HD3` on 1e996c609: 20 files (headers; 236 drawable) · 0 declaration units: 0 canonical / 0 promoted / 0 K&R marked / 0 aliases typed / 0 __builtin_abs → abs / 0 kept · compiles 0 
+- **2026-09-12 — T4 step (d) `t4_sig1`** (`restruct --apply --rung D --callee func_800385C0 --body $A/main__func_800385C0/body.c`; `.run/P37/restruct/run_t4_sig1.log`): `restruct: signature func_800385C0 — IDENTICAL · 2 files written` → R22 (`.run/P37/baseline/r22_t4_sig1.log`) **`check-all: 218 passed, 0 failed of 218`** (`wall=85.91 s`).
+
+## 🛑 SESSION CHECKPOINT — S107 (2026-09-12, FINAL — written for a FRESH session at 84 % context; the session's last commit follows this): gate 1 APPROVED, **T0 ☑ T1 ☑ T2 ☑ T3 ☑ — T4 IN PROGRESS (☐)** — 🛑 **T4 NEXT: resume the declaration layer where the cycle stopped (below, §1 "T4 — where it stands and the exact next commands"); xHigh** | R22 `check-all: 218 passed, 0 failed of 218` at `f2b58011e` (every one of the 21 T4 commits carries its own) | HEAD after this commit is the checkpoint's commit; tree clean; nothing pushed after `79b2f6f15` (Drew pushes, R6) | last batch `t4_sig1` on c0bbd26c6: restruct: signature func_800385C0 — IDENTICAL · 2 files written
 
 **Replay this block into the chat at the next session start (R64); it is the ONLY in-phase context the next session inherits. Everything below
 is what S107 knew and the next session must not re-derive.** **The checkpoint procedure (every session end, Drew 2026-09-12):** bank the
diff --git a/src/800_b_2.c b/src/800_b_2.c
index c78b4d4223..294b4a8f70 100644
--- a/src/800_b_2.c
+++ b/src/800_b_2.c
@@ -1872,7 +1872,7 @@ extern u16 D_800A4EA0;
 extern s32 func_8003836C(s32 a0);
 extern void func_800383A4(s16 a0);
 extern void func_800384A8(s16 a0);
-extern void func_800385C0(s16 a0);
+extern void func_800385C0(s32 a0);
 
 void func_8002EC10(void) {
     u16 v0;
@@ -1912,7 +1912,7 @@ void func_8002EC10(void) {
 
 
 extern void func_8002EC10(void);
-extern void func_800385C0(s16);
+extern void func_800385C0(s32 a0);
 extern u16 D_800A4EA2;
 extern s16 D_800A4E9A;
 
@@ -1931,7 +1931,7 @@ void func_8002ED90(void) {
 extern void func_8002EE90(void);
 extern void func_80031CC8(void);
 extern void func_8002EC10(void);
-extern void func_800385C0(s16);
+extern void func_800385C0(s32 a0);
 extern u16 D_800A4EA2;
 extern s16 D_800A4E9A;
 extern u8  D_800A4EE6;
diff --git a/src/800_c.c b/src/800_c.c
index e9dfd0d17f..24ac8e8cf6 100644
--- a/src/800_c.c
+++ b/src/800_c.c
@@ -2625,25 +2625,24 @@ void func_800384A8(s16 arg0) {
     *(s32 *)entry = *(s32 *)(entry + 4);
 }
 
-void func_800385C0(s16 a0)
+void func_800385C0(s32 a0)
 {
     extern u8 D_800C6E2A[];
     extern u8 D_800B9ED2[];
     extern u8 D_800B9ED3[];
-    register s32 a0v __asm__("$4");  // !FAKE: pin $4 — the parameter is a full s32 in the original (PROMOTE_PROTOTYPES narrowing, function.c:3664-3676); a SIGNATURE change, parked (P36 S105 f2 minimum-lever)
     u8 *v1;
     s32 a1;
 
     for (a1 = 0; a1 < 0x10; a1++) {
         v1 = &D_800C6E2A[a1 * 0x60];
-        if (v1[2] != 0 && *(s16 *)(*(s32 *)(v1 - 0xA) + 0x1F0) == a0v) {
+        if (v1[2] != 0 && *(s16 *)(*(s32 *)(v1 - 0xA) + 0x1F0) == a0) {
             v1[2] = 0;
             v1[0] = 0;
         }
     }
 
-    D_800B9ED2[((a0v << 7) - a0v) << 2] = 0;
-    D_800B9ED3[((a0v << 7) - a0v) << 2] = 0;
+    D_800B9ED2[((a0 << 7) - a0) << 2] = 0;
+    D_800B9ED3[((a0 << 7) - a0) << 2] = 0;
 }