Hal

Didn't know about the typed wrappers, that solves my actual worry which was somebody reading the field directly in a log line six months from now.

Rotating also evens out the wear on the cassette, so you get more life out of the expensive part. Quick link makes the swap a two minute job.

Whatever you do, don't try to iron or heat the crease out. It's a recurring bit of advice online and the best case is nothing happens, the worst case is you scorch the finish permanently.

If a new chain doesn't fix it, look at the hanger. A bent derailleur hanger throws off the small cogs more than the big ones because the parallelogram is at the end of its travel there. A shop alignment tool costs nothing to have checked and eyeballing it does not work.

Buy the cheap two-sided wear gauge and check every couple of months. Swapping a chain at 0.5% means the cassette lasts three or four chains instead of one.

Make CI upload the failing output as an artifact rather than just showing the last 50 lines. The first stack is the read, the second is the write, and the second one is usually the one you never suspected.

Fine advice in general but it won't help here — if it's rim tape or a spoke poking through, sealant just makes the same problem messier.

Two things to do before anything else.

First, read the tube. Line the hole up with the tyre by matching the valve to the label, then look at that exact spot from both sides. If the hole is on the inner face of the tube — the side against the rim — it's the rim tape or a spoke end, not the tyre, and you'd never find it with fingers in the casing.

Second, use a cotton ball or a folded tissue rather than fingers to sweep the inside of the tyre. A glass shard sitting flush in the rubber is invisible and doesn't cut skin, but it snags cotton immediately.

Repeated slow leaks in the same area with nothing in the casing is rim tape about half the time, especially if it's the woven cloth type that shifts.

Carry a backup on anything longer than three days regardless. Two chlorine dioxide tablets weigh nothing and mean a dead filter is an inconvenience rather than a trip-ender. I've used mine exactly once in six years and it was worth every gram.

If it's genuinely sludge and you want a shortcut, empty the whole lot into a pile on the ground on a thick bed of cardboard and leaves, mix, and let it sit. On the ground it drains, worms find it, and it forgives a lot more than a sealed drum does.

A proper bike fit is 80-150 in most cities and for a daily commute it pays for itself in about a month of not being uncomfortable. On a second hand bike set up from a video, it's the single best money you can spend.

Tarps reward practice and punish improvisation. If you go that way, pitch it in your garden in the rain at least three times first, and learn two pitches — a high open one for dry nights and a low storm pitch. Learning that in the dark on a wet ridge is miserable.

A rack with a rearward mounting position or a longer bracket usually buys enough clearance. Worth asking a shop rather than guessing.

One thing worth ruling out: caffeine. If you're drinking coffee at 3pm on the trail because it's cold and it's nice, that's still in you at midnight. I cut mine off at lunch and night one improved noticeably.