fix(scan,taint): TypeScript's limit is owned by TypeScript; a source pattern is a token

Two defects found by the cause-B rescan of the independent population (exploratory,
a retune after protocol-v1):

- `typescript_property_support_unvalidated` still reached the whole repository.
  YesWiki is a PHP application that ships a few `.ts` files, and all 1,128 of its PHP
  questions were unresolved. The limit is now owned by the TypeScript partition. A
  TypeScript project (Mockoon, Signal K) is unchanged.
- `isSourceCall`, and the method-level "reads a source" heuristics, matched source
  patterns as substrings. Flask's `request.get` therefore claimed Django's
  `request.get_host()`. wger's fix passes that host to
  `url_has_allowed_host_and_scheme`, and both fixed functions were reported as open
  redirects from it. Patterns are now matched as bounded tokens, like sinks and
  sanitizers. wger's vulnerable-pin detections rest on `request.GET`, which still
  matches.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo

src/openultrasast/cpg/queries/taint.sc

@@ -174,7 +174,10 @@
       if (accessOperators.contains(c.name)) c.code
       else if (c.name.startsWith("<operator")) ""
       else c.code.takeWhile(_ != '(')
-    named.nonEmpty && sourcePatterns.exists(p => named.contains(p))
+    // Bounded, like every other token here: a substring test let Flask's `request.get` claim Django's
+    // `request.get_host()` -- the host handed to the redirect VALIDATOR in wger's fix -- and both fixed
+    // functions were reported as open redirects.
+    named.nonEmpty && sourcePatterns.exists(p => mentionsToken(named, List(p)))
   }
 
   def frameworkSources = cpg.call.filter(isSourceCall)
@@ -1003,7 +1006,7 @@
   def sourceMethods(fileName: String): Set[String] =
     sourceMethodsMemo.getOrElseUpdate(
       fileName,
-      methodsIn(fileName).filter(m => m.ast.isCall.exists(c => sourcePatterns.exists(p => c.code.contains(p)))).map(_.name).toSet
+      methodsIn(fileName).filter(m => m.ast.isCall.exists(c => mentionsToken(c.code, sourcePatterns))).map(_.name).toSet
     )
 
   def fedFields(fileName: String): Map[String, String] =
@@ -1023,7 +1026,7 @@
                     case id: io.shiftleft.codepropertygraph.generated.nodes.Identifier => params.contains(id.name)
                     case _                                                             => false
                   }
-                  val fromSource = sourcePatterns.exists(p => rhs.code.contains(p)) || (readers.nonEmpty && rhs.ast.isCall.name.l.exists(readers.contains))
+                  val fromSource = mentionsToken(rhs.code, sourcePatterns) || (readers.nonEmpty && rhs.ast.isCall.name.l.exists(readers.contains))
                   if (fromSource) Some(target.code.trim -> "source")
                   else if (fromParameter) Some(target.code.trim -> "parameter")
                   else None
@@ -1041,7 +1044,7 @@
     callbackFedMemo.getOrElseUpdate(
       callback,
       strongest(cpg.method.nameExact(callback).l.map { m =>
-        if (m.ast.isCall.exists(c => sourcePatterns.exists(p => c.code.contains(p)))) "source"
+        if (m.ast.isCall.exists(c => mentionsToken(c.code, sourcePatterns))) "source"
         else {
           val fed = fedFields(m.filename)
           if (fed.isEmpty) "" else strongest(m.ast.isCall.nameExact(FIELD_ACCESS).code.l.map(code => prefixKind(code.trim, fed)))
@@ -1073,7 +1076,7 @@
     // no-dataflow query take minutes. `cpg.method.filter(...)` over every method per request was the
     // other half of that, replaced by a direct lookup of the reachable names.
     def methodHasSource(m: io.shiftleft.codepropertygraph.generated.nodes.Method): Boolean =
-      methodSourceMemo.getOrElseUpdate(m.fullName, m.ast.isCall.exists(c => sourcePatterns.exists(p => c.code.contains(p))))
+      methodSourceMemo.getOrElseUpdate(m.fullName, m.ast.isCall.exists(c => mentionsToken(c.code, sourcePatterns)))
     val sinkList    = sinkCalls.l
     val sourceLocal = labeledMethods.exists(methodHasSource)
     val sourceNear  = depth > 0 && cpg.method.fullNameExact(reachableMethods.toSeq: _*).exists(methodHasSource)

src/openultrasast/cpg/queries/vocabulary.sc

@@ -54,7 +54,7 @@
     else
       sourceMemo.getOrElseUpdate(
         c.method.fullName,
-        c.method.ast.isCall.exists(x => sourcePatterns.exists(p => x.code.contains(p)))
+        c.method.ast.isCall.exists(x => sourcePatterns.exists(p => boundedPattern(p).matcher(x.code).find()))
       )
 
   def isModelled(c: io.shiftleft.codepropertygraph.generated.nodes.Call): Boolean = {

src/openultrasast/model/partitions.py

@@ -279,6 +279,9 @@ def build_partitions(
             if language == "typescript":
                 record_limits += ("typescript_property_support_unvalidated",)
                 boundaries.add("typescript_property_support_unvalidated")
+                # About TypeScript answers. YesWiki is a PHP application that ships a few `.ts` files, and this
+                # boundary made all 1,128 of its PHP questions unresolved.
+                owned_languages.setdefault("typescript_property_support_unvalidated", set()).add("typescript")
             if language in {"c", "cpp"}:
                 record_limits += ("c_bounds_arithmetic_unmodeled",)
             records.append(