office --host with the host table and self-check; board --reset; startup commands written down

bin/board

@@ -16,6 +16,8 @@ renumbers the rest. Run it twice and nothing is duplicated.
 
 import os
 import shlex
+import subprocess
+import time
 import sys
 
 HERE = os.path.dirname(os.path.abspath(__file__))
@@ -28,7 +30,8 @@ BIN = os.path.join(os.path.dirname(HERE), "bin", "harness")
 
 
 def parse(argv):
-    opts = {"folder": os.getcwd(), "replace": "--replace" in argv}
+    opts = {"folder": os.getcwd(), "replace": "--replace" in argv,
+            "reset": "--reset" in argv}
     for i, a in enumerate(argv):
         if a == "--folder" and i + 1 < len(argv):
             opts["folder"] = argv[i + 1]
@@ -76,6 +79,22 @@ def main():
     h.say("board: %s  (session %s, folder %s)" % (cfg["paperclip"]["project"], session, folder))
     h.say("watching: %s" % task)
 
+    if opts["reset"]:
+        # Empty the session first, then build. --replace alone can run out of
+        # workspace slots on a half-built session and leave pages missing.
+        h.say("reset: closing every pane in %s" % session)
+        for w in tuios.windows(session):
+            subprocess.run(["tuios", "close-window", w["window_id"], "-s", session],
+                           capture_output=True, text=True, timeout=30)
+        for _ in range(30):
+            if not tuios.windows(session):
+                break
+            time.sleep(0.5)
+        for w in tuios.workspaces(session):
+            subprocess.run(["tuios", "set-workspace-name", str(w["workspace"]), "",
+                            "-s", session], capture_output=True, text=True, timeout=20)
+        h.say("reset: %s" % ("empty" if not tuios.windows(session) else "panes remain, building anyway"))
+
     if opts["replace"]:
         for name, _, _ in page_list:
             if tuios.close_pane(name, session):