feat: usertest fixes — hub-truth builtins, calm badge + separate install action, list filter, formal address

- drop the hardcoded builtin set {'debug.echo'}; missing-module
  detection trusts the host capability list (includes real hub
  builtins) — fixes hello's false play button
- split the orange combined chip into a neutral status chip and a
  never-truncated install link
- add a substring filter over the flow list with an honest
  no-match state
- German strings use the formal address throughout; grammar fixes
- analyzer hint says 'chain install --link' (was 'fai …')
- 0.24.0

Signed-off-by: flemming-it <sf@flemming.it>

CHANGELOG.md

@@ -1,5 +1,27 @@
 # Changelog
 
+## 0.24.0
+
+Usertest-panel fixes (flow list + language):
+
+- **Builtin-capability truth from the hub.** Removed the hardcoded
+  client-side builtin set (`{'debug.echo'}`): missing-module
+  detection now trusts the host-supplied capability list alone,
+  which already includes the hub's real builtins. Fixes the bundled
+  `hello` flow showing a play button on hubs that don't have
+  `debug.echo` installed.
+- **Missing-modules badge redesigned.** Status ("N Module fehlen",
+  quiet neutral chip with an amber dot) and the install action
+  (own link, never truncated) are separate elements; the former
+  combined orange chip read as an error wall and ellipsized the
+  action word.
+- **Flow-list filter.** Case-insensitive substring filter above the
+  list, with an honest "no flow matches" empty state.
+- **Formal address (Sie) in all German strings** plus missing
+  commas/quotes in the empty-state sentences.
+- Analyzer hint now names the current CLI (`chain install --link`,
+  was `fai install --link`).
+
 ## 0.23.0
 
 - Run tab file inputs accept a host-injected native file picker