feat: honest install badge — classify store resolvability before the click

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>

CHANGELOG.md

@@ -1,5 +1,26 @@
 # Changelog
 
+## 0.25.0
+
+Honest install badge — the flow list and analyzer only offer
+"Install" for capabilities a configured store can actually resolve:
+
+- **Store-resolvability split in the flow list.** Missing
+  capabilities are classified BEFORE any click: store-resolvable
+  ones keep the amber chip + Install link (which now installs only
+  those), the rest render a quiet "not in store" chip whose tooltip
+  explains the three recovery paths (local install via
+  `chain install --link`, adding the providing store, configuring
+  the MCP/n8n integration). Previously the Install action covered
+  every missing capability and could end in the hub's
+  "no store entry for '<name>'" error.
+- New host contract: `_FileList` consumes the host's
+  `storeCapabilities` (already exposed on `FlowEditorPage`) for the
+  split; hosts should pass only capabilities the store can install
+  (installable status, native kind).
+- **Analyzer not-in-store message** now names all three recovery
+  paths instead of only the local-install hint (EN + DE).
+
 ## 0.24.1
 
 - No ALL-CAPS "FLOWS" panel header: the page toolbar already names