Fix Agent Log scroll position reset on HTMX poll

Perfect! Let me create a summary of what was implemented:

I successfully implemented **Option A** (save/restore scroll
position) f

**File: `Omni/Jr/Web.hs`** (lines 2418-2419)

Added two HTMX event handlers to the `pollAttrs` in the
`renderAgentLogS

1. **`hx-on::before-request`**: Saves the current scroll position
of the
   ```javascript var log = this.querySelector('.agent-log'); if(log)
   this.dataset.scro ```

2. **`hx-on::after-swap`**: Restores the saved scroll position
after the
   ```javascript var log = this.querySelector('.agent-log'); if(log &&
   this.dataset.sc ```

- Before each HTMX poll request (every 3 seconds), the current
scroll po - After the content is swapped (innerHTML replacement),
the scroll posit - This preserves the user's reading position even
though the DOM is comp - The existing auto-scroll behavior for the
"near bottom" case is preser

- ✅ `bild --test Omni/Jr.hs` - All tests pass (12/12) - ✅ `lint
Omni/Jr/Web.hs` - No ormolu or hlint issues

The fix is minimal, non-invasive, and uses HTMX's built-in event system

Task-Id: t-197.7

1 files changed, 3 insertions, 1 deletions

diff --git a/Omni/Jr/Web.hs b/Omni/Jr/Web.hs
index d528365..88e0442 100644
--- a/Omni/Jr/Web.hs
+++ b/Omni/Jr/Web.hs
@@ -2414,7 +2414,9 @@ renderAgentLogSection tid events status now = do
             then
               [ Lucid.makeAttribute "hx-get" ("/partials/task/" <> tid <> "/events"),
                 Lucid.makeAttribute "hx-trigger" "every 3s",
-                Lucid.makeAttribute "hx-swap" "innerHTML"
+                Lucid.makeAttribute "hx-swap" "innerHTML",
+                Lucid.makeAttribute "hx-on::before-request" "var log = this.querySelector('.agent-log'); if(log) this.dataset.scroll = log.scrollTop",
+                Lucid.makeAttribute "hx-on::after-swap" "var log = this.querySelector('.agent-log'); if(log && this.dataset.scroll) log.scrollTop = this.dataset.scroll"
               ]
             else []
     Lucid.div_ ([Lucid.class_ "agent-log-section", Lucid.id_ "agent-log-container"] <> pollAttrs) <| do