The pattern-analysis tokenizer split names only on underscore first,
then on dash. A key like "name_done:<uuid>" left the colon glued to
the leading hex group, so the trailing UUID was never recognised as a
single token and instead shredded on dash into short hex anchors. The
derived template kept those anchors fixed, producing a distinct glob
per UUID and preventing any merge.
Treat colon and dot as primary separators alongside underscore so the
embedded UUID is isolated, matched by isUUIDShape, and collapsed to a
wildcard. Extend templateHasFixedAnchor to ignore the new separators
so a separator-only template stays rejected by the anti-overmerge
guard.
Signed-off-by: Émile Ré <emile@probo.com>