Default the change log to Mine instead of Everyone

Opening the log is almost always to check your own recent work, not
the whole version's, so it now starts on 'mine' -- still resets on
every open rather than persisting, same reasoning as before, just the
other default.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CLAUDE.md

@@ -763,11 +763,12 @@ accounts, one of them the reader's, so finding your own meant reading the `By`
 column down the whole list.
 
 Marked *and* filterable on purpose: the mark is how you tell without hiding
-anybody, the filter is for when you want only yours. It resets to Everyone on
-every open and is not persisted — a filter that hides other people's work is
-fine as a thing you asked for and a trap as a thing you inherited from last
-week. `isMine()` is strict authorship, deliberately not `canUndo()`: an admin
-can undo everything, and marking every row as theirs would say nothing.
+anybody, the filter is for when you want only yours. It resets to Mine on
+every open and is not persisted — opening the log is almost always to check
+your own recent work, and a stale "Everyone" from last session is a worse
+default than the reverse would be. `isMine()` is strict authorship,
+deliberately not `canUndo()`: an admin can undo everything, and marking every
+row as theirs would say nothing.
 
 The fetch stays unfiltered, since the counts on the control need the whole set.
 

ui/src/views/Forecast.jsx

@@ -255,10 +255,10 @@ export default function Forecast({ sources = [], sourceId, versions = [], versio
   const [showBridge,    setShowBridge]    = useState(false)
   const [logEntries,    setLogEntries]    = useState([])
   const [logLoading,    setLogLoading]    = useState(false)
-  // Whose entries the log lists. Not persisted, and it resets to everyone on
-  // every open: a filter that hides other people's work is fine as a thing you
-  // asked for and a trap as a thing you inherited from last week.
-  const [logWho,        setLogWho]        = useState('all')   // 'all' | 'mine'
+  // Whose entries the log lists. Not persisted, and it resets to mine on
+  // every open, so opening the log starts on what you're most likely looking
+  // for -- your own recent work -- rather than everyone's.
+  const [logWho,        setLogWho]        = useState('mine')   // 'all' | 'mine'
   const [editingCell,   setEditingCell]   = useState(null)  // { id, field: 'note'|'tag', text }
   const [undoingId,     setUndoingId]     = useState(null)
 
@@ -1828,7 +1828,7 @@ export default function Forecast({ sources = [], sourceId, versions = [], versio
   async function openLog() {
     setShowLog(true)
     setExpandedLog(null)
-    setLogWho('all')
+    setLogWho('mine')
     setLogLoading(true)
     try {
       // Baseline and reference loads are segment construction, not forecasting.