tests: replace NativeCallsTest with the NamespacedCallsCheck copy-in pair

The old test enforced only the ~28 opcode built-ins from a hardcoded list.
The new pair from the docs repo enforces the full house rule in src/: one
use function line naming exactly the built-ins the file calls, no
backslashed calls, no unused imports. NamespacedCallsCheck.php is a
tokenizer scanner with a --fix mode and no function list to maintain;
NamespacedCallsTest.php fails CI on any gap and self-checks both files.

src/ imports regenerated with --fix (import lines only, no call-site
changes), and the ad-hoc speed notes above the lists replaced with the
standard one-line comment. SharedHelpers.php got the same import line in
both twins, keeping the byte-compare contract.

Author: daveedis

src/Deprecations.php

@@ -10,8 +10,8 @@
 use Itools\SmartString\SmartString;
 use JetBrains\PhpStorm\Deprecated;
 
-// compile to single opcodes instead of runtime name lookups; see the note in SmartArrayBase.php
-use function array_key_exists, func_num_args, is_array, is_bool, is_float, is_int, is_null, is_scalar, is_string;
+// import built-ins so calls resolve at compile time instead of per-call lookups; NamespacedCallsTest keeps this list exact
+use function array_chunk, array_key_exists, array_keys, array_map, func_num_args, get_debug_type, implode, in_array, is_array, is_bool, is_float, is_int, is_null, is_scalar, is_string, preg_match, sprintf, str_replace, strtolower, trigger_error;
 
 /**
  * Old and retired method names, phased out in stages.

src/SharedHelpers.php

@@ -3,6 +3,9 @@
 
 namespace Itools\SmartArray;
 
+// import built-ins so calls resolve at compile time instead of per-call lookups; NamespacedCallsTest keeps this list exact
+use function array_column, array_map, basename, debug_backtrace, dirname, headers_list, implode, in_array, preg_match, str_ireplace, str_replace, trait_exists, trigger_error, trim;
+
 /**
  * SharedHelpers - common functions used across our libraries.
  *

src/SmartArray.php

@@ -7,7 +7,7 @@
 use Itools\SmartString\SmartString;
 use JetBrains\PhpStorm\Deprecated;
 
-// compile to single opcodes instead of runtime name lookups; see the note in SmartArrayBase.php
+// import built-ins so calls resolve at compile time instead of per-call lookups; NamespacedCallsTest keeps this list exact
 use function func_get_args, is_array;
 
 /**

src/SmartArrayBase.php

@@ -8,14 +8,8 @@
 use ArrayAccess, ArrayIterator, IteratorAggregate, Iterator, Countable, JsonSerializable, Closure, ReflectionFunction;
 use Itools\SmartString\SmartString;
 
-// Speed: an unqualified builtin call in a namespaced file compiles to a runtime
-// name lookup; importing the name lets these compile to single opcodes instead of
-// function calls (~4ns each; SmartString's constructor measured ~12% faster from
-// the same change). Only builtins the compiler turns into opcodes are listed -
-// other builtins gain ~1ns and stay out. NativeCallsTest holds the opcode list
-// and names any uncovered call site or unused import.
-use function array_key_exists, count, func_num_args, is_array, is_bool, is_float,
-    is_int, is_null, is_object, is_scalar, is_string, strlen;
+// import built-ins so calls resolve at compile time instead of per-call lookups; NamespacedCallsTest keeps this list exact
+use function addcslashes, array_column, array_filter, array_key_exists, array_key_first, array_key_last, array_keys, array_map, array_merge, array_multisort, array_slice, array_unique, array_values, basename, count, debug_backtrace, func_num_args, get_debug_type, header, headers_sent, htmlspecialchars, http_response_code, implode, is_array, is_bool, is_callable, is_float, is_int, is_null, is_numeric, is_object, is_scalar, is_string, json_decode, json_encode, max, method_exists, preg_match, preg_replace, rtrim, sort, spl_object_id, sprintf, str_contains, str_pad, str_repeat, strlen, trigger_error, trim, var_export;
 
 /**
  * SmartArrayBase - Base implementation for SmartArray and SmartArrayHtml.

src/SmartArrayHtml.php

@@ -6,7 +6,7 @@
 use Itools\SmartString\SmartString;
 use JetBrains\PhpStorm\Deprecated;
 
-// compile to single opcodes instead of runtime name lookups; see the note in SmartArrayBase.php
+// import built-ins so calls resolve at compile time instead of per-call lookups; NamespacedCallsTest keeps this list exact
 use function func_get_args, is_array;
 
 /**

src/SmartNull.php

@@ -11,8 +11,8 @@
 use JsonSerializable;
 use stdClass;
 
-// compile to single opcodes instead of runtime name lookups; see the note in SmartArrayBase.php
-use function count, is_null;
+// import built-ins so calls resolve at compile time instead of per-call lookups; NamespacedCallsTest keeps this list exact
+use function count, in_array, is_null, method_exists, property_exists, strtolower;
 
 /**
  * SmartNull - Chainable null object for missing elements.