fix: match digest2int on arm (1.2.3)

digest::digest2int hashes a plain char, so its signedness follows the
platform. The native kernel forced signed char, which agreed on x86 and
diverged on arm for bytes above 0x7f.

Same fix as rmorie 1.2.3; versions stay locked. The Python arm has no
digest2int and is unaffected.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GVZR4QjrTXCv55j4qdo6E2

Author: rootcoder007

VERSION_INVENTORY.csv

@@ -274,10 +274,10 @@ File,Line,Status,Version,Context
 ./paper.md,2150,STALE_OR_DEP,1.1.30,"30–46. <https://doi.org/10.1037/1082-989X.1.1.30>."
 ./paper.md,2315,STALE_OR_DEP,88.6.2297,"2297–301. <https://doi.org/10.1073/pnas.88.6.2297>."
 ./paper.md,2624,STALE_OR_DEP,93.5.1043,"<https://doi.org/10.1161/01.CIR.93.5.1043>."
-./pyproject.toml,7,CURRENT,1.2.2,"version = 1.2.2"
+./pyproject.toml,7,STALE_OR_DEP,1.2.3,"version = 1.2.3"
 ./pyproject.toml,64,STALE_OR_DEP,3.1.0,"openpyxl>=3.1.0;"
 ./pyproject.toml,80,STALE_OR_DEP,1.2.0,"# Restored after the 1.2.0 merge: the branch's leaner extras table replaced"
-./r-package/morie/DESCRIPTION,4,CURRENT,1.2.2,"Version: 1.2.2"
+./r-package/morie/DESCRIPTION,4,STALE_OR_DEP,1.2.3,"Version: 1.2.3"
 ./r-package/morie/DESCRIPTION,37,STALE_OR_DEP,4.3.0,"R (>= 4.3.0)"
 ./r-package/morie/DESCRIPTION,38,STALE_OR_DEP,4.3.0,"Note: Tested on R 4.3.0; 4.4.x; 4.5.2; 4.5.3 (CRAN). Use CRAN R on Apple"
 ./r-package/morie/DESCRIPTION,38,STALE_OR_DEP,4.3.0,"Note: Tested on R 4.3.0; 4.4.x; 4.5.2; 4.5.3 (CRAN). Use CRAN R on Apple"

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "scikit_build_core.build"
 
 [project]
 name = "morie"
-version = "1.2.2"
+version = "1.2.3"
 description = "Multi-domain scientific computing toolkit (Python + R) for observational inference and intervention analysis. Provides causal estimators (ATE, ATT, AIPW, DML, G-computation), survey sampling, propensity-score and doubly-robust methods, sensitivity analysis, spatial statistics, Hawkes point processes, and psychometrics, with a unified RichResult output."
 authors = [
   { name="Vansh Singh Ruhela", email="vsruhela@proton.me" }

r-package/morie/DESCRIPTION

@@ -1,7 +1,7 @@
 Package: morie
 Type: Package
 Title: Multi-Domain Open Research and Inferential Estimation
-Version: 1.2.2
+Version: 1.2.3
 Authors@R: c(
   person(
     given = "Vansh Singh",

r-package/morie/src/morie_digest.cpp

@@ -341,7 +341,10 @@ uint32_t murmur32(const bytes& in, uint32_t seed) {
 uint32_t jenkins_oaat(const char* key, uint32_t seed) {
   uint32_t hash = seed;
   for (; *key; ++key) {
-    hash += (uint32_t)(int32_t)(signed char)*key;  // digest adds the (signed) char
+    // digest adds a plain char, so its signedness is the platform's:
+    // signed on x86, unsigned on arm. Forcing signed here matched x86
+    // and diverged on arm for any byte above 0x7f.
+    hash += (uint32_t)(int32_t)*key;
     hash += (hash << 10);
     hash ^= (hash >> 6);
   }