♻️ Refactor right sidebar state management

Also removing duplicated refs and improve efficiency of
several other refs used on sidebar.

frontend/playwright/data/workspace/get-file-blank.json

@@ -29,10 +29,10 @@
   "~:created-at": "~m1713536343369",
   "~:data": {
     "~:pages": [
-      "~uc7ce0794-0992-8105-8004-38f28044384a"
+      "~u66697432-c33d-8055-8006-2c62cc084cad"
     ],
     "~:pages-index": {
-      "~uc7ce0794-0992-8105-8004-38f28044384a": {
+      "~u66697432-c33d-8055-8006-2c62cc084cad": {
         "~#penpot/pointer": [
           "~ude58c8f6-c5c2-8196-8004-3df9e2e52d88",
           {
@@ -55,4 +55,4 @@
       }
     ]
   }
-}
+}

frontend/playwright/data/workspace/get-file-fragment-blank.json

@@ -91,7 +91,7 @@
         }
       }
     },
-    "~:id": "~uc7ce0794-0992-8105-8004-38f28044384a",
+    "~:id": "~u66697432-c33d-8055-8006-2c62cc084cad",
     "~:name": "Page 1"
   }
 }

frontend/playwright/data/workspace/get-file-fragment-gradient-limits.json

@@ -276,4 +276,4 @@
         "~:id": "~u66697432-c33d-8055-8006-2c62cc084cad",
         "~:name": "Page 1"
     }
-}
+}

frontend/playwright/data/workspace/get-file-fragment-tokens.json

@@ -1,6 +1,6 @@
 {
   "~:id": "~u51e13852-1a8e-8037-8005-9eabb500f7c7",
-  "~:file-id": "~u51e13852-1a8e-8037-8005-9e9413a1f1f6",
+  "~:file-id": "~uc7ce0794-0992-8105-8004-38f280443849",
   "~:created-at": "~m1737542758401",
   "~:data": {
     "~:options": {},
@@ -454,7 +454,7 @@
         }
       }
     },
-    "~:id": "~u51e13852-1a8e-8037-8005-9e9413a1f1f7",
+    "~:id": "~u66697432-c33d-8055-8006-2c62cc084cad",
     "~:name": "Page 1",
     "~:background": "#e8eae9",
     "~:guides": {

frontend/playwright/data/workspace/get-file-fragment-typography-tokens.json

@@ -1,6 +1,6 @@
 {
   "~:id": "~u021b87d4-813e-8066-8006-b36537098786",
-  "~:file-id": "~uef9b2783-804c-8017-8006-ae6f7eab52ad",
+  "~:file-id": "~uc7ce0794-0992-8105-8004-38f280443849",
   "~:created-at": "~m1756113434655",
   "~:data": {
     "~:objects": {
@@ -258,7 +258,7 @@
         }
       }
     },
-    "~:id": "~uef9b2783-804c-8017-8006-ae6f7eab52ae",
+    "~:id": "~u66697432-c33d-8055-8006-2c62cc084cad",
     "~:name": "Page 1"
   }
 }

frontend/playwright/data/workspace/get-file-tokens.json

@@ -23,15 +23,17 @@
   "~:revn": 36,
   "~:modified-at": "~m1737542758402",
   "~:vern": 0,
-  "~:id": "~u51e13852-1a8e-8037-8005-9e9413a1f1f6",
+  "~:id": "~uc7ce0794-0992-8105-8004-38f280443849",
   "~:is-shared": false,
   "~:version": 60,
   "~:project-id": "~u0df61468-6cbf-8067-8005-6b453ce996d0",
   "~:created-at": "~m1737536563847",
   "~:data": {
-    "~:pages": ["~u51e13852-1a8e-8037-8005-9e9413a1f1f7"],
+    "~:pages": [
+      "~u66697432-c33d-8055-8006-2c62cc084cad"
+    ],
     "~:pages-index": {
-      "~u51e13852-1a8e-8037-8005-9e9413a1f1f7": {
+      "~u66697432-c33d-8055-8006-2c62cc084cad": {
         "~#penpot/pointer": [
           "~u51e13852-1a8e-8037-8005-9eabb500f7c7",
           {

frontend/playwright/data/workspace/get-file-typography-tokens.json

@@ -27,7 +27,7 @@
   "~:revn": 133,
   "~:modified-at": "~m1756113434658",
   "~:vern": 0,
-  "~:id": "~uef9b2783-804c-8017-8006-ae6f7eab52ad",
+  "~:id": "~uc7ce0794-0992-8105-8004-38f280443849",
   "~:is-shared": false,
   "~:migrations": {
     "~#ordered-set": []
@@ -36,9 +36,11 @@
   "~:project-id": "~u0df61468-6cbf-8067-8005-6b453ce996d0",
   "~:created-at": "~m1755780585133",
   "~:data": {
-    "~:pages": ["~uef9b2783-804c-8017-8006-ae6f7eab52ae"],
+    "~:pages": [
+      "~u66697432-c33d-8055-8006-2c62cc084cad"
+    ],
     "~:pages-index": {
-      "~uef9b2783-804c-8017-8006-ae6f7eab52ae": {
+      "~u66697432-c33d-8055-8006-2c62cc084cad": {
         "~#penpot/pointer": [
           "~u021b87d4-813e-8066-8006-b36537098786",
           {
@@ -47,7 +49,7 @@
         ]
       }
     },
-    "~:id": "~uef9b2783-804c-8017-8006-ae6f7eab52ad",
+    "~:id": "~uc7ce0794-0992-8105-8004-38f280443849",
     "~:options": {
       "~:components-v2": true,
       "~:base-font-size": "16px"