docs: rewrite README in Hebrew + update project description

Replace the legacy English MCP-only README with a comprehensive Hebrew
README covering the full Web + MCP product: features, architecture,
3-tier appraisals, smart "same street" inference, RTL hardening guide,
deployment topology, all REST endpoints with curl examples.

Also update pyproject.toml description to match.

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

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "nadlan-mcp"
 version = "2.0.0"
-description = "Israeli Real Estate MCP Server"
+description = "חיפוש עסקאות נדל\"ן (Govmap) והחלטות שמאי מכריע (משרד המשפטים) — שרת MCP + ממשק Web עברי עם תמיכת RTL"
 readme = "README.md"
 requires-python = ">=3.7"
 license = {text = "MIT"}