feat: add SQLite database browser in FileNav

- New SqliteView component with table tabs, paginated data view
  (100 rows/page), SQL query editor (Cmd+Enter), NULL/BLOB formatting,
  sticky column headers, and dark mode
- Supports .db, .sqlite, .sqlite3, .db3 extensions
- Uses sql.js WASM served locally from /sql.js/sql-wasm.wasm
- Also fixes display_file handling when another file is already open

package-lock.json

@@ -93,6 +93,7 @@
 				"shiki": "^4.0.1",
 				"socket.io-client": "^4.2.0",
 				"sortablejs": "^1.15.6",
+				"sql.js": "^1.14.1",
 				"svelte-sonner": "^0.3.19",
 				"tippy.js": "^6.3.7",
 				"turndown": "^7.2.0",
@@ -12363,6 +12364,12 @@
 			"integrity": "sha512-Oo+0REFV59/rz3gfJNKQiBlwfHaSESl1pcGyABQsnnIfWOFt6JNj5gCog2U6MLZ//IGYD+nA8nI+mTShREReaA==",
 			"dev": true
 		},
+		"node_modules/sql.js": {
+			"version": "1.14.1",
+			"resolved": "https://registry.npmjs.org/sql.js/-/sql.js-1.14.1.tgz",
+			"integrity": "sha512-gcj8zBWU5cFsi9WUP+4bFNXAyF1iRpA3LLyS/DP5xlrNzGmPIizUeBggKa8DbDwdqaKwUcTEnChtd2grWo/x/A==",
+			"license": "MIT"
+		},
 		"node_modules/ssf": {
 			"version": "0.11.2",
 			"resolved": "https://registry.npmjs.org/ssf/-/ssf-0.11.2.tgz",