style(graph, ahocorasick): fix formatting and add clang-tidy suppress comments

Author: Timwood0x10

engine/src/ahocorasick.h

@@ -124,6 +124,11 @@ class ACAutomaton {
 		int best_len = 0;
 		for (const char *p = text; *p; p++) {
 			int idx = static_cast<unsigned char>(*p);
+			// Follow failure links until we find a node with a
+			// child for this character, or reach the root.
+			// `next` is a fixed-size array (Node*[256]), so
+			// `!next[idx]` is a valid null-element check, not a
+			// null-pointer dereference (clang-tidy false positive).
 			while (cur != &root_ && !cur->next[idx])
 				cur = cur->fail;
 			if (cur->next[idx])

engine/src/graph/graph_builder.cpp

@@ -11,7 +11,8 @@ namespace graph
 // state_builder) treat them as reachable roots instead of orphans.
 // Go's `init` is an implicit entry point executed at package load.
 // [module=graph, method=isEntryPointName]
-static bool isEntryPointName(const std::string &name, const std::string &language)
+static bool isEntryPointName(const std::string &name,
+			     const std::string &language)
 {
 	if (name == "main") {
 		return language == "c" || language == "cpp" ||