rename ss-tools to superset-tools across the entire project

- Replace all occurrences of 'ss-tools' with 'superset-tools' in 104 files
- Rename git bundle file ss-tools.bundle → superset-tools.bundle
- Update .gitignore pattern accordingly
- Preserve variable names (hasSsTools etc.) and code identifiers

docs/api/Doxyfile

@@ -1,7 +1,7 @@
-PROJECT_NAME           = "ss-tools API"
+PROJECT_NAME           = "superset-tools API"
 PROJECT_BRIEF          = "Superset Tools Backend — GRACE-Poly semantic contracts"
 OUTPUT_DIRECTORY       = docs/api/html
-INPUT                  = /home/busya/dev/ss-tools/docs/api/doxygen_stripped.txt
+INPUT                  = /home/busya/dev/superset-tools/docs/api/doxygen_stripped.txt
 FILE_PATTERNS          = *.txt
 RECURSIVE              = NO
 EXTENSION_MAPPING      = txt=C