feat: lifetime elision, tooling CI, registry, and LSP locals

Ship the QUALITY_PLAN stretch from ownership through ecosystem: C.1
lifetime elision (bootstrap + selfhost), bux fmt/test/doc CI hooks,
stdlib goldens, package registry (bux search/add), and LSP 0.4
position-sensitive locals with inferred let types. Full-tree format
pass plus Map/Set remove double-free fix.

examples/jwt.bux

@@ -29,30 +29,30 @@ func Jwt_Create(payload: JsonValue, secret: String) -> String {
     let header: JsonValue = Json_Object();
     Json_ObjectSet(&header, "alg", Json_String("HS256"));
     Json_ObjectSet(&header, "typ", Json_String("JWT"));
-    
+
     let headerB64: String = Base64UrlEncode(Json_Stringify(header));
     let payloadB64: String = Base64UrlEncode(Json_Stringify(payload));
-    
+
     let signingInput: String = String_Concat(headerB64, ".");
     signingInput = String_Concat(signingInput, payloadB64);
-    
+
     let sigRaw: String = Crypto_HmacSha256Raw(secret, signingInput);
     let sigB64: String = Base64UrlEncodeSig(sigRaw);
-    
+
     return String_Concat(String_Concat(signingInput, "."), sigB64);
 }
 
 func Main() -> int {
     PrintLine("=== JWT Demo ===");
-    
+
     let payload: JsonValue = Json_Object();
     Json_ObjectSet(&payload, "sub", Json_String("user123"));
     Json_ObjectSet(&payload, "name", Json_String("Bux Developer"));
     Json_ObjectSet(&payload, "admin", Json_Bool(true));
-    
+
     let token: String = Jwt_Create(payload, "my-secret-key");
     PrintLine("Token:");
     PrintLine(token);
-    
+
     return 0;
 }