feat: implement fuzzy search and replace functionality with Levenshtein distance

- Added `applySearchReplace` function to handle search and replace operations with fuzzy matching capabilities.
- Introduced tests for various scenarios including fuzzy matching with typos, exact matches, and handling whitespace differences.
- Created a parser for search/replace blocks to facilitate the new functionality.
- Updated prompts for search-replace operations to clarify usage and examples.
- Added utility functions for text normalization and language detection based on file extensions.
- Implemented a minimal stdio MCP server for local testing with tools for adding numbers and printing environment variables.

drizzle/meta/_journal.json

@@ -85,6 +85,41 @@
       "when": 1755545060076,
       "tag": "0011_light_zeigeist",
       "breakpoints": true
+    },
+    {
+      "idx": 12,
+      "version": "6",
+      "when": 1758320228637,
+      "tag": "0012_bouncy_fenris",
+      "breakpoints": true
+    },
+    {
+      "idx": 13,
+      "version": "6",
+      "when": 1759068733234,
+      "tag": "0013_damp_mephistopheles",
+      "breakpoints": true
+    },
+    {
+      "idx": 14,
+      "version": "6",
+      "when": 1760034009367,
+      "tag": "0014_needy_vertigo",
+      "breakpoints": true
+    },
+    {
+      "idx": 15,
+      "version": "6",
+      "when": 1760474402750,
+      "tag": "0015_complete_old_lace",
+      "breakpoints": true
+    },
+    {
+      "idx": 16,
+      "version": "6",
+      "when": 1762297039106,
+      "tag": "0016_petite_thanos",
+      "breakpoints": true
     }
   ]
 }