feat: AI terminal, Z.AI quota, /model change, formatting fixes, update redirects

- Add dedicated AI Terminal tab (non-deletable) shared between user and AI
- Add Z.AI quota display on dashboard via /api/monitor/usage/quota/limit
- Add /model change command in Studio to toggle MiniMax/ZAI
- Apply Studio formatting (formatText, renderContent) to Shell AI messages
- Add render tick refresh for Shell (1s streaming, 5s idle)
- Add analysis viewer modal (Eye button) in Shell panel
- Fix multi-shell tab creation with retry init and settings ref
- Persist shell tabs to localStorage
- Fix line spacing in Studio (line-height 1.7→1.5, cleanup stray <br/>)
- Redirect Config updates to AI terminal via custom events
- Fix CI: delete existing release before recreating
- Bump version to 0.3.4

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

internal/api/handlers_shell_chat.go

@@ -277,3 +277,16 @@ Sois concret et technique. Le rapport sera utilisé comme contexte pour un assis
 		"analysis": result,
 	})
 }
+
+func (s *Server) handleShellAnalysisGet(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "GET" {
+		writeError(w, "GET only", http.StatusMethodNotAllowed)
+		return
+	}
+	analysis := LoadSystemAnalysis()
+	if analysis == "" {
+		writeJSON(w, map[string]interface{}{"analysis": nil})
+		return
+	}
+	writeJSON(w, map[string]interface{}{"analysis": analysis})
+}