Cache enhancements:

- Use quota for /p/ requests
- Correctly detect owner.full_name to save unneeded requests out
- Unify quota reached pages
- Unify post presentation into function that fetches prerequisites
- Add getByID method to userRequestCache

src/site/html/static/js/post_overlay.js

@@ -1,5 +1,6 @@
 import {q, ElemJS} from "./elemjs/elemjs.js"
 import {timeline} from "./post_series.js"
+import {quota} from "./quota.js"
 
 /** @type {PostOverlay[]} */
 const postOverlays = []
@@ -139,6 +140,12 @@ function loadPostOverlay(shortcode, stateChangeType) {
 				window.location.assign(root.redirectTo)
 				return
 			}
+
+			if (root.quota) {
+				quota.set(root.quota)
+				delete root.quota // don't apply the old quota next time the post is opened
+			}
+
 			shortcodeDataMap.set(shortcode, root)
 			if (overlay.available) {
 				const {title, html} = root

src/site/html/static/js/quota.js

@@ -6,6 +6,11 @@ class Quota extends ElemJS {
 		this.value = +this.element.textContent
 	}
 
+	set(value) {
+		this.value = value
+		this.text(this.value)
+	}
+
 	change(difference) {
 		this.value += difference
 		this.value = Math.max(0, this.value)