Day 4 fix #1: Rails product-slug rename (DB collision)

scripts/ruby/rename.rb

@@ -56,6 +56,10 @@ def build_patterns(from, to)
   to_snake_pl   = pluralize(to_snake)
   from_pl       = pluralize(from)
   to_pl         = pluralize(to)
+  from_flat     = from.downcase
+  to_flat       = to.downcase
+  from_flat_pl  = from_flat + "s"
+  to_flat_pl    = to_flat + "s"
 
   # Ruby's \b treats `_` as a word char, so \bshop\b doesn't fire
   # inside `shop_id` or `accounts_shopkeeper`. Hand-rolled boundaries:
@@ -78,6 +82,12 @@ def build_patterns(from, to)
     [/#{pascal_l}#{Regexp.escape(from)}#{pascal_r}/,        to],
     [/#{snake_l}#{Regexp.escape(from_snake_pl)}#{snake_r}/, to_snake_pl],
     [/#{snake_l}#{Regexp.escape(from_snake)}#{snake_r}/,    to_snake],
+    # flat-lowercase (runs AFTER snake so single-word rename pairs
+    # where flat == snake can't win over snake's replacement; catches
+    # multi-word compounds collapsed in URLs / package names /
+    # email addresses, e.g. `nativeapptemplate.com`).
+    [/#{snake_l}#{Regexp.escape(from_flat_pl)}#{snake_r}/,  to_flat_pl],
+    [/#{snake_l}#{Regexp.escape(from_flat)}#{snake_r}/,     to_flat],
     [/#{snake_l}#{Regexp.escape(from_pl.upcase)}(?![A-Za-z])/, to_pl.upcase],
     [/#{snake_l}#{Regexp.escape(from.upcase)}(?![A-Za-z])/,    to.upcase],
   ]

src/agents/workers/rails.ts

@@ -31,12 +31,14 @@ export async function runRailsWorker(domain: DomainSpec): Promise<WorkerResult>
   await prepareFresh(outDir);
   await copyFiltered(substrate, outDir);
 
-  const plan = domain.renamePlan.map((p) => `${p.from}->${p.to}`).join(", ");
+  const productPairs = buildProductRenamePairs(domain.slug);
+  const renamePlan: readonly RenamePair[] = [...productPairs, ...domain.renamePlan];
+  const plan = renamePlan.map((p) => `${p.from}->${p.to}`).join(", ");
   trace("rails", `running scripts/ruby/rename.rb: ${plan}`);
 
   const renameStats = await runRuby<{ renamePlan: readonly RenamePair[]; root: string }, RenameStats>(
     "rename.rb",
-    { renamePlan: domain.renamePlan, root: outDir },
+    { renamePlan, root: outDir },
   );
 
   trace(
@@ -54,6 +56,22 @@ export async function runRailsWorker(domain: DomainSpec): Promise<WorkerResult>
   };
 }
 
+function slugToPascal(slug: string): string {
+  return slug
+    .split(/[-_]/)
+    .filter(Boolean)
+    .map((s) => s.charAt(0).toUpperCase() + s.slice(1))
+    .join("");
+}
+
+function buildProductRenamePairs(slug: string): readonly RenamePair[] {
+  const pascal = slugToPascal(slug);
+  return [
+    { from: "Nativeapptemplateapi", to: `${pascal}Api` },
+    { from: "NativeAppTemplate", to: pascal },
+  ];
+}
+
 async function prepareFresh(dir: string): Promise<void> {
   try {
     await stat(dir);