feat: broaden picker revset to all() to expose every operable revision

Previously used jj's default revsets.log, which is intentionally narrow
for jj log's scrollback purposes (`@ | trunk() | ancestors(mutable, 2)`).
For a picker, we want every visible revision so older revs (for abandon,
rebase -d, etc.) are reachable. `--limit 1000` keeps the blast radius
bounded on huge repos; smart prefix matching keeps lookup cheap.

src/jj.rs

@@ -28,6 +28,8 @@ pub fn capture_log() -> Result<Vec<Row>> {
             "--ignore-working-copy",
             "log",
             "--color=always",
+            "-r",
+            "all()",
             "--limit",
             "1000",
             "-T",