feat: add phase 2 endpoints, session persistence and actions

Co-authored-by: aider (openrouter/thinkingmachines/inkling-small:free) <aider@aider.chat>

README.md

@@ -27,6 +27,7 @@ This app provides a lightweight local interface to manage Kubernetes clusters vi
 - Add logs viewer
 - Expand actions: describe, delete, logs, and more
 - Improve error handling and feedback
+- Session persistence for context/namespace defaults
 
 ### Phase 3: Polish & Safety
 - Confirmation dialogs for destructive actions
@@ -37,11 +38,12 @@ This app provides a lightweight local interface to manage Kubernetes clusters vi
 ## Roadmap / Checklist
 
 - [x] Add readme describing kubectl gui plan
-- [ ] Phase 1: Prototype backend and basic frontend
-- [ ] Phase 1: Context and namespace selection
-- [ ] Phase 1: List pods and nodes
-- [ ] Phase 2: Search pods, nodes, PVCs, and others
-- [ ] Phase 2: Describe, delete, and logs actions
+- [x] Phase 1: Prototype backend and basic frontend
+- [x] Phase 1: Context and namespace selection
+- [x] Phase 1: List pods and nodes
+- [x] Phase 2: Search pods, nodes, PVCs, and others
+- [x] Phase 2: Describe, delete, and logs actions
+- [x] Phase 2: Session persistence for context/namespace
 - [ ] Phase 3: Safety confirmations and error handling
 - [ ] Phase 3: UI polish and documentation