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

frontend/src/types/models.ts

@@ -1,5 +1,5 @@
 // #region ModelTypes [C:1] [TYPE Module] [SEMANTICS types, domain, models]
-// @BRIEF Core domain model interfaces for ss-tools frontend.
+// @BRIEF Core domain model interfaces for superset-tools frontend.
 // @LAYER Domain
 
 // ── Task / Job ───────────────────────────────────────────────