fix: tolerate ssh failures, drop vendored binary

- query each server independently for app status so ssh login issues no
  longer abort the whole poll (partial results still render)
- show ssh/server errors as a dismissible banner instead of a dead-end
  error screen; any key dismisses and s can be retried
- guard against concurrent status polls
- stop tracking the compiled cctuip binary, add .gitignore
- add -v/--version flag, remove dead code, harden type assertions,
  cache recipe catalogue lookups
- align README install + controls with the code

README.md

@@ -7,10 +7,11 @@ This is a prototype to gather some feedback.
 ## Install
 
 ```
-curl https://git.coopcloud.tech/decentral1se/cctuip/raw/branch/main/cctuip -o cctuip
-chmod +x cctuip
+go install coopcloud.tech/cctuip@latest
 ```
 
+Or grab a binary from the [releases](https://github.com/kawaiipunk/cctuip/releases).
+
 ## Features
 
 * `abra app ls` compatibility. It does not query `-S` unless you press
@@ -23,11 +24,16 @@ chmod +x cctuip
 
 * `up/down`: scroll up / down (`jk` vim bindings also work)
 * `page up/down`: ;page up down (`ctrl+u/d` vim binding also work)
-* `/`: fuzzy filter against domain, server & recipe
+* `/` or `f`: fuzzy filter against domain, server & recipe
 * `enter`: focus on table, select row, confirm
 * `esc`: reset filter
+* `q`: quit
 * `s`: retrieve app deployment status (filter first to reduce scope)
 
+  Unreachable servers (e.g. SSH login issues) are skipped and reported in a
+  banner; statuses for the remaining servers are still shown. Press any key to
+  dismiss the banner and try again.
+
 ## Hack
 
 ```