web: default lectio-web to port 1099 with free-port fallback

chooseListener(port) factors the listen logic out of Run: port==0 now
tries defaultWebPort (1099) first and only falls back to an OS-picked
free port if 1099 is taken; a non-zero port is still bound exactly,
surfacing its bind error as before. config.Default() keeps WebPort: 0
unchanged (0 still means "auto"). Adds TestChooseListener, robust to
sandboxes that can't bind 1099 or :0 (t.Skip instead of failing).

Also folds the ?ref= whitespace trim into renderLookup itself so GET /
and GET /lookup treat a whitespace-only ref identically (previously
only lookupHandler trimmed it).

0 files changed, 0 insertions, 0 deletions