Merge asks first; Work>work lists runs with a log tab; Shell says where everything is

bin/board

@@ -44,7 +44,8 @@ def pages(cfg, folder):
     # on the rail, so it is capitalised and says what the page is for; the pane
     # keeps the program's own name. Written Workspace>pane when talking about it.
     task_pages = [
-        ("shell", "Shell", "exec zsh -i"),
+        ("shell", "Shell", "%s %s; exec zsh -i" % (
+            shlex.quote(os.path.join(os.path.dirname(BIN), "shell-banner")), shlex.quote(folder))),
         ("board", "Board", "%s -screen board -project %s -folder %s" % (shlex.quote(bin_path), proj, shlex.quote(folder))),
         ("work", "Work", "%s -screen work -folder %s" % (shlex.quote(bin_path), shlex.quote(folder))),
         ("agents", "Agents", "%s -screen agents -folder %s" % (shlex.quote(bin_path), shlex.quote(folder))),

bin/shell-banner

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+"""Print where a project's files are, then the shell takes over.
+
+Shown in Shell>shell when it opens, because the first question there is always
+"where am I". It reads the project's own file and nothing else.
+"""
+
+import os
+import sys
+
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "lib"))
+import project as pj
+
+
+def main():
+    folder = os.path.abspath(sys.argv[1] if len(sys.argv) > 1 else os.getcwd())
+    cfg = pj.load(folder)
+    home = os.path.expanduser("~")
+    rows = [
+        ("project folder", folder),
+        ("task worktrees", os.path.join(folder, ".paperclip", "worktrees")),
+        ("this project's file", pj.path(folder)),
+        ("harness commands", os.path.join(os.path.dirname(os.path.abspath(__file__)))),
+        ("pi conversations", os.path.join(home, ".pi", "paperclips")),
+        ("pi skills you own", os.path.join(home, ".agents", "skills")),
+        ("paperclip data", os.path.join(home, ".paperclip", "instances", "default")),
+        ("session", cfg.get("session", "")),
+        ("watching", cfg.get("watching", "")),
+    ]
+    inner = 70
+    label = max(len(k) for k, _ in rows) + 2
+    print("┌─ where things are " + "─" * (inner - 19) + "┐")
+    for k, v in rows:
+        room = inner - label - 2
+        if len(v) > room:
+            v = v[: room - 1] + "…"
+        line = " " + k.ljust(label) + v
+        print("│" + line.ljust(inner) + "│")
+    print("└" + "─" * inner + "┘")
+    print("""
+the panes are the normal way to work. this shell is for the commands we do not wrap:
+  bin/merge <TASK>      checks and merges one task (the Merge tab in Work>work does this)
+  bin/review <TASK>     the review on its own
+  bin/board             rebuild or repair the panes (or press R in Repair>repair)
+  bin/office <folder>   adopt another folder as a project
+""")
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as exc:  # a banner must never stop the shell opening
+        print("(no project file here: %s)" % exc)