Standardize workspace: Capitalize Justfile references in scripts and docs

Author: hyperpolymath

docs/SPEC-clade-verisim-portal.adoc

@@ -246,7 +246,7 @@ hyperpolymath.github.io/
     bindings/             # Typed bindings to API
   index.html              # Shell (loads WASM)
   rescript.json
-  justfile
+  Justfile
 ----
 
 === Layer 2: API Gateway (Cloudflare Worker)
@@ -420,7 +420,7 @@ gv-clade-index/
   contractiles/
     must/
       clade-hygiene.a2ml     # Every repo MUST have CLADE.a2ml
-  justfile
+  Justfile
 ----
 
 == Implementation Phases

docs/practice/AI-CONVENTIONS.adoc

@@ -72,7 +72,7 @@ MAINTENANCE-CHECKLIST.a2ml, or SOFTWARE-DEVELOPMENT-APPROACH.a2ml in the reposit
 
 ## Build System
 
-Use `just` (justfile) for all build, test, lint, and format tasks.
+Use `just` (Justfile) for all build, test, lint, and format tasks.
 
 ## References