fix: restore alpha_wrt registration; skip array vars in decl gen; add example validation to precheck

Author: sbryngelson

toolchain/bootstrap/precheck.sh

@@ -127,11 +127,24 @@ fi
 ) &
 PID_PARAM_DOCS=$!
 
+# Example case validation
+(
+    failed=0
+    for case in examples/*/case.py; do
+        [ -f "$case" ] || continue
+        if ! ./mfc.sh validate "$case" > /dev/null 2>&1; then
+            failed=$((failed + 1))
+        fi
+    done
+    echo "$failed" > "$TMPDIR_PC/examples_exit"
+) &
+PID_EXAMPLES=$!
+
 # --- Collect results ---
 
 FAILED=0
 
-log "[$CYAN 1/6$COLOR_RESET] Checking$MAGENTA formatting$COLOR_RESET..."
+log "[$CYAN 1/7$COLOR_RESET] Checking$MAGENTA formatting$COLOR_RESET..."
 if [ "$FORMAT_OK" = "1" ]; then
     error "Formatting check failed to run."
     FAILED=1
@@ -146,7 +159,7 @@ else
 fi
 
 wait $PID_SPELL
-log "[$CYAN 2/6$COLOR_RESET] Running$MAGENTA spell check$COLOR_RESET..."
+log "[$CYAN 2/7$COLOR_RESET] Running$MAGENTA spell check$COLOR_RESET..."
 SPELL_RC=$(cat "$TMPDIR_PC/spell_exit" 2>/dev/null || echo "1")
 if [ "$SPELL_RC" = "0" ]; then
     ok "Spell check passed."
@@ -156,7 +169,7 @@ else
 fi
 
 wait $PID_LINT
-log "[$CYAN 3/6$COLOR_RESET] Running$MAGENTA toolchain lint$COLOR_RESET..."
+log "[$CYAN 3/7$COLOR_RESET] Running$MAGENTA toolchain lint$COLOR_RESET..."
 LINT_RC=$(cat "$TMPDIR_PC/lint_exit" 2>/dev/null || echo "1")
 if [ "$LINT_RC" = "0" ]; then
     ok "Toolchain lint passed."
@@ -166,7 +179,7 @@ else
 fi
 
 wait $PID_SOURCE
-log "[$CYAN 4/6$COLOR_RESET] Running$MAGENTA source lint$COLOR_RESET..."
+log "[$CYAN 4/7$COLOR_RESET] Running$MAGENTA source lint$COLOR_RESET..."
 SOURCE_RC=$(cat "$TMPDIR_PC/source_exit" 2>/dev/null || echo "1")
 if [ "$SOURCE_RC" = "0" ]; then
     ok "Source lint passed."
@@ -175,7 +188,7 @@ else
     FAILED=1
 fi
 
-log "[$CYAN 5/6$COLOR_RESET] Checking$MAGENTA doc references$COLOR_RESET..."
+log "[$CYAN 5/7$COLOR_RESET] Checking$MAGENTA doc references$COLOR_RESET..."
 if [ $DOC_FAILED -eq 0 ]; then
     ok "Doc references are valid."
 else
@@ -184,7 +197,7 @@ else
 fi
 
 wait $PID_PARAM_DOCS
-log "[$CYAN 6/6$COLOR_RESET] Checking$MAGENTA parameter docs$COLOR_RESET..."
+log "[$CYAN 6/7$COLOR_RESET] Checking$MAGENTA parameter docs$COLOR_RESET..."
 PARAM_DOCS_RC=$(cat "$TMPDIR_PC/param_docs_exit" 2>/dev/null || echo "1")
 if [ "$PARAM_DOCS_RC" = "0" ]; then
     ok "Parameter documentation check passed."
@@ -193,6 +206,16 @@ else
     FAILED=1
 fi
 
+wait $PID_EXAMPLES
+log "[$CYAN 7/7$COLOR_RESET] Validating$MAGENTA example cases$COLOR_RESET..."
+EXAMPLES_FAILED=$(cat "$TMPDIR_PC/examples_exit" 2>/dev/null || echo "1")
+if [ "$EXAMPLES_FAILED" = "0" ]; then
+    ok "All example cases are valid."
+else
+    error "$EXAMPLES_FAILED example case(s) failed validation. Run$MAGENTA ./mfc.sh validate examples/\*/case.py$COLOR_RESET for details."
+    FAILED=1
+fi
+
 echo ""
 
 if [ $FAILED -eq 0 ]; then

toolchain/mfc/params/definitions.py

@@ -623,6 +623,7 @@ def _load():
         _r(n, LOG, {"output"})
     for n in [
         "schlieren_wrt",
+        "alpha_wrt",
         "rho_wrt",
         "E_wrt",
         "pres_wrt",

toolchain/mfc/params/generators/fortran_gen.py

@@ -107,6 +107,9 @@ def generate_decls_fpp(target: str) -> str:
         param = REGISTRY.all_params.get(name)
         if param is None:
             continue
+        # Skip if also registered as an indexed family — Fortran declares it as an array.
+        if any(k.startswith(f"{name}(") for k in REGISTRY.all_params):
+            continue
         lines.append(f"{fortran_type_decl(param).ljust(_DECL_COL)}:: {name}")
     return "\n".join(lines) + "\n"