From 6202f9f69efa19492c263796331da753f0454e44 Mon Sep 17 00:00:00 2001
From: ashim-hq <ashim.hq@gmail.com>
Date: Sun, 19 Apr 2026 21:20:01 +0800
Subject: [PATCH] fix: prevent progress bar from jumping backwards during
 install
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The store set an initial 5% optimistically, then SSE sent real progress
starting from 0%, causing the bar to visibly drop. Now progress only
moves forward — both SSE and polling paths use Math.max to never
regress below the current value.
---
 apps/web/src/stores/features-store.ts | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/apps/web/src/stores/features-store.ts b/apps/web/src/stores/features-store.ts
index ce89a843..d3ce7487 100644
--- a/apps/web/src/stores/features-store.ts
+++ b/apps/web/src/stores/features-store.ts
@@ -68,7 +68,14 @@ export const useFeaturesStore = create<FeaturesState>((set, get) => {
           }
           resolveCompletion(bundleId);
         } else if (updated.progress) {
-          set({ installing: { ...get().installing, [bundleId]: updated.progress } });
+          const current = get().installing[bundleId];
+          const percent = Math.max(updated.progress.percent, current?.percent ?? 0);
+          set({
+            installing: {
+              ...get().installing,
+              [bundleId]: { percent, stage: updated.progress.stage },
+            },
+          });
         }
       } catch {}
     }, 3000);
@@ -106,10 +113,12 @@ export const useFeaturesStore = create<FeaturesState>((set, get) => {
           resolveCompletion(bundleId);
           return;
         }
+        const current = get().installing[bundleId];
+        const percent = Math.max(data.percent, current?.percent ?? 0);
         set({
           installing: {
             ...get().installing,
-            [bundleId]: { percent: data.percent, stage: data.stage },
+            [bundleId]: { percent, stage: data.stage },
           },
         });
       } catch {}