fix(core): address edge cases in title_case module (#2284)

harper-core/dictionary.dict

@@ -7820,6 +7820,7 @@ PRC/ONg             # mainland China
 PRO/N
 PS/ONgJ             # postscript; multiple meanings as implied by the attributes?
 P.S.                # postscript
+U.S./Og             # United States
 PST/ONg
 PSU/Sg              # power supply unit
 PT/NOJ
@@ -54136,3 +54137,4 @@ topicalization/Nmg
 typological/JQ
 volitive/NSgJ
 worldbuild/Vd>G
+WordCamp/gO

harper-core/src/title_case.rs

@@ -243,4 +243,28 @@ mod tests {
             "United States"
         )
     }
+
+    #[test]
+    fn keeps_decimal() {
+        assert_eq!(
+            make_title_case_str(
+                "harper turns 1.0 today",
+                &PlainEnglish,
+                &FstDictionary::curated()
+            ),
+            "Harper Turns 1.0 Today"
+        )
+    }
+
+    #[test]
+    fn fixes_odd_capitalized_proper_nouns() {
+        assert_eq!(
+            make_title_case_str(
+                "i spoke at wordcamp u.s. in 2025",
+                &PlainEnglish,
+                &FstDictionary::curated()
+            ),
+            "I Spoke at WordCamp U.S. in 2025",
+        );
+    }
 }

harper-core/tests/text/linters/Computer science.snap.yml

@@ -491,17 +491,6 @@ Message: |
 
 
 
-Lint:    Spelling (63 priority)
-Message: |
-     137 | "In the U.S., however, informatics is linked with applied computing, or
-         |         ^~~~ Did you mean to spell `U.S.` this way?
-Suggest:
-  - Replace with: “P.S.”
-  - Replace with: “UBS”
-  - Replace with: “USA”
-
-
-
 Lint:    Spelling (63 priority)
 Message: |
      140 | A folkloric quotation, often attributed to—but almost certainly not first

harper-core/tests/text/tagged/Computer science.md

@@ -269,7 +269,7 @@
 > adopted in        the UK   ( as    in        the School  of Informatics , University of Edinburgh ) .
 # VP/J    NPr/J/R/P D+  NPr+ . NSg/R NPr/J/R/P D   N🅪Sg/VB P  Nᴹ          . NSg        P  NPr+      . .
 > " In        the U.S. , however , informatics is  linked with applied computing , or
-# . NPr/J/R/P D+  ?    . C       . Nᴹ          VL3 VP/J   P    VP/J    Nᴹ/Vg/J+  . NPr/C
+# . NPr/J/R/P D+  NPr+ . C       . Nᴹ          VL3 VP/J   P    VP/J    Nᴹ/Vg/J+  . NPr/C
 > computing in        the context of another domain . "
 # Nᴹ/Vg/J+  NPr/J/R/P D   N🅪Sg/VB P  I/D     NSg+   . .
 >