Split each flow's missing capabilities into store-resolvable ones
(amber chip + Install link, which now installs only those) and a
quiet 'not in store' chip whose tooltip explains the three recovery
paths in place: local install via chain install --link, adding the
providing store, or configuring the MCP/n8n integration. The
analyzer's not-in-store message names the same three paths (EN+DE).
Previously the list's Install action covered every missing
capability and could end in the hub's 'no store entry' error.
Also replace a private-looking capability example name in a doc
comment and test with a neutral placeholder. (0.25.0)
Signed-off-by: flemming-it <sf@flemming.it>