feat: publish Regex Tools 0.2.0

docs/EXPLANATION_MODEL.md

@@ -1,9 +1,9 @@
 # Explanation model
 
-The community provider converts regexpp nodes into a stable application AST
-inside the syntax worker. Nodes carry deterministic IDs, UTF-16 ranges, raw
-source, capture metadata, quantifier bounds, assertion kind, support status,
-provider identity and provenance.
+The ECMAScript community provider converts regexpp nodes into a stable
+application AST inside the syntax worker. Nodes carry deterministic IDs,
+UTF-16 ranges, raw source, capture metadata, quantifier bounds, assertion kind,
+support status, provider identity and provenance.
 
 Explanations are original deterministic text selected by node type. Nullable
 and minimum/maximum consumed-length properties are derived recursively where
@@ -15,6 +15,13 @@ regexpp 4.12.2 does not expose tolerant recovery. A malformed pattern therefore
 gets the provider's exact diagnostic plus an application-owned error node. No
 partial regexpp AST is claimed.
 
+The PCRE2 provider currently emits a deliberately partial lexical tree for
+common capture forms. It does not infer branch-reset numbering or claim full
+nesting; authoritative compilation, capture counts, names and result ranges
+come from PCRE2 itself.
+
 The explanation tree is structural. It is never called an actual execution
 trace. Selecting a node selects and scrolls its exact editor range; selecting
-pattern text chooses the smallest enclosing node.
+pattern text chooses the smallest enclosing node. PCRE2’s separate trace viewer
+contains actual bounded automatic callouts; its movement labels remain a
+distinct derived layer and are never copied into the structural explanation.