fix(store.c): improve root path integrity check with range-based validation

Replace the fragile NOT IN list of individual characters with a range-based BETWEEN 'A' AND 'Z' check for validating project root paths.
The previous query only excluded letters A–H, leaving paths starting with I–Z silently invalid.
In Windows, all the alphabet can be used.
A Windows drive starting with letters I-Z breaks the saving of the database.

Author: noctrex

src/store/store.c

@@ -657,7 +657,8 @@ bool cbm_store_check_integrity(cbm_store_t *s) {
         rc = sqlite3_prepare_v2(
             s->db,
             "SELECT root_path FROM projects WHERE root_path != '' "
-            "AND substr(root_path, 1, 1) NOT IN ('/', 'A','B','C','D','E','F','G','H') LIMIT 1;",
+            "AND NOT (substr(root_path, 1, 1) = '/' "
+            "OR (substr(root_path, 1, 1) BETWEEN 'A' AND 'Z')) LIMIT 1;",
             CBM_NOT_FOUND, &stmt, NULL);
         if (rc == SQLITE_OK) {
             if (sqlite3_step(stmt) == SQLITE_ROW) {