Function collect_dev_sources 

fn collect_dev_sources(
    dev_root: &Path,
    out: &mut Vec<SqliteSource>,
    incomplete: &mut bool,
)

Locate dev instance dirs (those with data/db/objects.db) and anchor each on its sibling agents/ dir. The dev layout is at most two levels under dev/: dev/<branch>/data/... (older single-level layout) or dev/<branch>/<sub-hash>/data/.... We check exactly those depths and never descend into an instance’s own subdirs — so an agent workspace (<instance>/agents/<slug>/) that holds a nested AgentMux objects.db is never mistaken for a source (reagent P2), and a dev branch whose slug happens to equal an internal dir name like data/agents is still scanned (no name-based skip-list — codex P2).