feat(booth): multi-question asks — a questions list renders one form with a radio group per question and lands as one answer sidecar keyed by question

- asks.py: single {prompt, options} and multi {title, questions:[{key, prompt, options, notes?}]} both normalise to questions[]; per-question notes; every question required on submit
- /answer reads choice.<key> / notes.<key> / notes for multi; single shape unchanged
- booth asks prints per-question picks; README + CLI header; install step symlinks the CLI to ~/.local/bin; v0.1.10; 135 tests

services/booth/scripts/booth

@@ -28,6 +28,9 @@
 # writes <stem>.answer.json next to it. `answer --wait` blocks until that file
 # exists and prints it, so a session can `booth ask … && booth answer --wait …`
 # and carry on. Re-answering overwrites: the sidecar is the CURRENT answer.
+# Several questions in ONE form: write <stem>.ask.json by hand with a
+# `questions` list (see services/booth/README.md § Asks); `asks` and `answer`
+# handle both shapes.
 # Remote sessions: rsync the ask in, then poll
 #   http://10.100.10.50:8090/b/<name>/<stem>.answer.json   (404 until answered).
 #
@@ -226,8 +229,13 @@ if not asks:
 for a in asks:
     if a["error"]:
         state = "BROKEN  " + a["error"]
+    elif a["answer"] and a["multi"]:
+        picks = ", ".join("%s=%s" % (k, v["label"]) for k, v in a["answer"]["answers"].items())
+        state = "answered  %s  (%s)" % (picks, a["answer"]["answered_at"])
     elif a["answer"]:
         state = "answered  %s  (%s)" % (a["answer"]["label"], a["answer"]["answered_at"])
+    elif a["multi"]:
+        state = "open  (%d questions)" % len(a["questions"])
     else:
         state = "open"
     print("%-24s %s" % (a["stem"], state))