feat(reconcile): two-source reconciliation tool

Bank-feed-vs-ledger style matcher: 4-pass greedy assignment (key →
exact → tolerance → fuzzy) with ambiguous candidates routed to a
review bucket instead of arbitrary picks. CLI mirrors the
cli_text_clean preview/--apply pattern; Streamlit page registered
in the automations section.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/gui/tools_registry.py

@@ -157,6 +157,18 @@ TOOLS: list[Tool] = [
         status="Ready",
         section="transformations",
     ),
+    Tool(
+        tool_id="11_reconciler",
+        icon=":material/compare_arrows:",
+        name="Reconcile Two Files",
+        description=(
+            "Match transactions between two sources (e.g. bank feed vs. "
+            "ledger) with amount and date tolerance."
+        ),
+        page_slug="11_Reconciler",
+        status="Ready",
+        section="automations",
+    ),
 ]