Merge origin/main — union .gitignore: keep sandbox/tool-results/secrets exclusions, adopt remote's dist/ and !.env.example

.gitignore

@@ -19,6 +19,7 @@ node_modules
 
 # production
 /build
+/dist
 
 # misc
 .DS_Store
@@ -32,6 +33,7 @@ yarn-error.log*
 
 # env files (can opt-in for committing if needed)
 .env*
+!.env.example
 
 # vercel
 .vercel
@@ -43,13 +45,16 @@ next-env.d.ts
 local-*
 .claude
 .z-ai-config
+
+# runtime logs & local scratch (dev server output, platform pid)
 *.log
 dev.log
 dev.out.log
 test
 prompt
-
 server.log
+.zscripts/dev.pid
+
 # Skills directory
 /skills/
 
@@ -57,4 +62,4 @@ server.log
 /tool-results/
 
 # local secrets -- stay on this machine only, never push
-/secrets/
+/secrets/