chore: raise file size limit to 600 lines, remove allowlist

The 500 LOC limit was too tight — several files sat in the allowlist
permanently. Raising to 600 and removing the allowlist so the check
is honest: if a file is over the limit, it needs to be split.

Author: miguel-heygen

.filesize-allowlist

@@ -467,14 +467,13 @@ jobs:
     timeout-minutes: 1
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-      - name: Check file sizes (max 500 lines)
+      - name: Check file sizes (max 600 lines)
         run: |
           EXIT=0
           while IFS= read -r f; do
-            if grep -qxF "$f" .filesize-allowlist 2>/dev/null; then continue; fi
             lines=$(wc -l < "$f")
-            if [ "$lines" -gt 500 ]; then
-              echo "::error file=$f::$f has $lines lines (max 500)"
+            if [ "$lines" -gt 600 ]; then
+              echo "::error file=$f::$f has $lines lines (max 600)"
               EXIT=1
             fi
           done < <(find packages/studio -path '*/node_modules' -prune -o \( -name '*.ts' -o -name '*.tsx' \) -print | grep -vE '\.(test|spec)\.(ts|tsx)$|\.generated\.')

.github/workflows/ci.yml

@@ -21,18 +21,16 @@ pre-commit:
       glob: "packages/**/*.{ts,tsx,mts,cts,js,jsx,mjs,cjs}"
       run: bunx fallow audit --base origin/main --fail-on-issues
     filesize:
-      # Scoped to packages/studio — the 500 LOC limit is a studio architecture
+      # Scoped to packages/studio — the 600 LOC limit is a studio architecture
       # standard enforced as part of the App.tsx decomposition work. Player and
       # other packages enforce size discipline via code review and convention.
-      # Files temporarily over the limit are listed in .filesize-allowlist.
       glob: "packages/studio/**/*.{ts,tsx}"
       exclude: "(\\.test\\.(ts|tsx)$|\\.generated\\.)"
       run: |
         for f in {staged_files}; do
-          if grep -qxF "$f" .filesize-allowlist 2>/dev/null; then continue; fi
           lines=$(wc -l < "$f")
-          if [ "$lines" -gt 500 ]; then
-            echo "ERROR: $f has $lines lines (max 500) — add to .filesize-allowlist if temporarily needed"
+          if [ "$lines" -gt 600 ]; then
+            echo "ERROR: $f has $lines lines (max 600)"
             exit 1
           fi
         done