feat: rename .code-intelligence to .osscodeiq, add nicegui dep, add design specs

- Rename all .code-intelligence references to .osscodeiq (clean break, no backward compat)
- Rename CodeIntelligence to OSSCodeIQ in DOT output
- Add nicegui>=3.9 to dependencies
- Add .superpowers/ to .gitignore
- Add explorer UI design spec and implementation plan

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: aksOps

.gitignore

@@ -39,9 +39,9 @@ htmlcov/
 Thumbs.db
 
 # Project
-.code-intelligence/
+.osscodeiq/
+.superpowers/
 docs/superpowers/
-docs/specs/
 .code_intelligence_cache*/
 *.db
 *.db-wal

CLAUDE.md

@@ -8,7 +8,7 @@
 - **CLI command:** `osscodeiq`
 - **Python package:** `osscodeiq` (under `src/osscodeiq/`)
 - **GitHub repo:** `RandomCodeSpace/code-iq` (repo name differs from package name)
-- **Cache directory on disk:** `.code-intelligence` (legacy name, kept for backward compatibility)
+- **Cache directory on disk:** `.osscodeiq`
 
 ## Architecture