Fix OBBBA blog post filename to match existing content

Rename blog post and image files back to introducing-obbba-household-explorer to fix broken homepage link. This maintains the existing blog post about the Streamlit app.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: MaxGhenis

…oducing-obbba-household-by-household.png …introducing-obbba-household-explorer.pngsrc/images/posts/introducing-obbba-household-by-household.png renamed to src/images/posts/introducing-obbba-household-explorer.png src/images/posts/introducing-obbba-household-by-household.png renamed to src/images/posts/introducing-obbba-household-explorer.png

@@ -13,8 +13,8 @@
     "description": "New interactive tool reveals household-level impacts of the One Big Beautiful Bill Act.",
     "date": "2025-07-03",
     "tags": ["us", "policy", "featured", "reconciliation"],
-    "filename": "introducing-obbba-household-by-household.md",
-    "image": "introducing-obbba-household-by-household.png",
+    "filename": "introducing-obbba-household-explorer.md",
+    "image": "introducing-obbba-household-explorer.png",
     "authors": ["max-ghenis", "pavel-makarchuk", "elena-cura"]
   },
   {