diff --git a/.agents/skills/lib.sh b/.agents/skills/lib.sh
index c39b9e2..d3b5920 100644
--- a/.agents/skills/lib.sh
+++ b/.agents/skills/lib.sh
@@ -2204,7 +2204,7 @@ wait_for_tui_ready() {
     # handle it and do NOT declare ready on this iteration.
     tail_lines=$(printf '%s\n' "$content" | grep -v '^[[:space:]]*$' | tail -n 20)
     if printf '%s\n' "$tail_lines" | grep -E -q "$modal_pat" 2>/dev/null; then
-      handle_startup_dialogs "$sess" 1 || true
+      handle_startup_dialogs "$sess" 1 "$agent" || true
       sleep 1
       continue
     fi
@@ -2254,7 +2254,7 @@ wait_for_tui_ready() {
     fi
 
     # 4. Startup dialog & hint resolution if not ready
-    handle_startup_dialogs "$sess" 1 || true
+    handle_startup_dialogs "$sess" 1 "$agent" || true
     sleep 1
   done
   echo "⚠️ TUI readiness check timed out for '$sess'." >&2
@@ -2702,29 +2702,113 @@ send_keys_safe() {
   return 4
 }
 
-# handle_startup_dialogs <sess> [timeout_sec=20]
-# Post-start/resume dialog policy for claude: accept the trust / bypass
-# dialogs ONLY when their signature is positively on screen; return as soon
-# as the TUI banner is ready. Replaces the blind Enter/Down/Enter sequence.
+# _mam_load_dialog_facts <agent>
+# Populate MAM_STARTUP_DIALOGS for <agent>, once per agent per shell. Only that
+# one fact is taken: `facts` is an eval contract (F8), and evaluating all of it
+# here would clobber ready/placeholder tokens a caller deliberately set.
+# An agent the adapters do not know keeps an empty list.
+_mam_load_dialog_facts() {
+  local agent="$1" _f=""
+  if [ "${_MAM_DIALOGS_AGENT:-}" = "$agent" ]; then
+    return 0
+  fi
+  _f="$("$(_delegate_py_bin)" -m lib_py.agents facts "$agent" 2>/dev/null | sed -n 's/^MAM_STARTUP_DIALOGS=//p')" || _f=""
+  if [ -n "$_f" ]; then
+    eval "MAM_STARTUP_DIALOGS=$_f"
+  else
+    MAM_STARTUP_DIALOGS='[]'
+  fi
+  _MAM_DIALOGS_AGENT="$agent"
+  return 0
+}
+
+# _mam_dialog_pick — first actionable dialog on this frame.
+# stdout: "send|<idx>|<key> <key>..." or "skip|<idx>|", nothing when there is
+# none to act on. rc 1 means "nothing to do" (matched-but-cooling counts).
+_mam_dialog_pick() {
+  MAM_DLG_PANE="$1" MAM_DLG_JSON="$2" MAM_DLG_TRUST="$3" \
+  MAM_DLG_STATE="$4" MAM_DLG_NOW="$5" MAM_DLG_COOLDOWN="$6" \
+  python3 -c '
+import os, re, sys, json
+pane = os.environ.get("MAM_DLG_PANE", "")
+try:
+    dialogs = json.loads(os.environ.get("MAM_DLG_JSON") or "[]")
+except Exception:
+    dialogs = []
+auto_trust = os.environ.get("MAM_DLG_TRUST", "1") != "0"
+try:
+    now = int(os.environ.get("MAM_DLG_NOW") or 0)
+    cooldown = int(os.environ.get("MAM_DLG_COOLDOWN") or 5)
+except ValueError:
+    sys.exit(1)
+state = {}
+for tok in (os.environ.get("MAM_DLG_STATE") or "").split():
+    k, _, v = tok.partition(":")
+    try:
+        state[int(k)] = int(v)
+    except ValueError:
+        pass
+for idx, entry in enumerate(dialogs):
+    try:
+        pattern, keys, kind = entry[0], entry[1], entry[2]
+        if not re.search(pattern, pane):
+            continue
+    except Exception:
+        continue
+    last = state.get(idx)
+    if last is not None and 0 <= now - last < cooldown:
+        sys.exit(1)
+    if kind == "trust" and not auto_trust:
+        print("skip|%d|" % idx)
+        sys.exit(0)
+    print("send|%d|%s" % (idx, " ".join(keys)))
+    sys.exit(0)
+sys.exit(1)
+'
+}
+
+# handle_startup_dialogs <sess> [timeout_sec=20] [agent=claude]
+# Answer the blocking modals an agent shows before its TUI is usable. The
+# signatures and accept keys come from the agent adapter (MAM_STARTUP_DIALOGS),
+# so this is agent-agnostic - issue #24: it used to be a claude-only ladder
+# called only for claude, and agy/grok/codex sat on their trust prompt until
+# the readiness wait timed out and onboarding was skipped.
+#
+# `--source visible` keeps showing an accepted dialog for a while (#24
+# comment), so a signature still on screen is NOT evidence that the keys were
+# missed: re-sending for the same signature is gated by MAM_DIALOG_RESEND_S
+# (default 5s) and acceptance is judged only by the ready tokens.
+#
+# MAM_AUTO_TRUST=0 leaves `trust` dialogs unanswered (warned once per
+# cooldown); `notice` dialogs are always answered.
 handle_startup_dialogs() {
-  local sess="$1" timeout="${2:-20}" waited=0 pane
+  local sess="$1" timeout="${2:-20}" agent="${3:-claude}"
+  local waited=0 pane pick action rest idx keys key now
+  local cooldown="${MAM_DIALOG_RESEND_S:-5}"
+  local auto_trust="${MAM_AUTO_TRUST:-1}"
+  _mam_load_dialog_facts "$agent"
+  local dialogs="${MAM_STARTUP_DIALOGS:-[]}"
+  local ready_re="${MAM_STRONG_READY_TOKENS:-${MAM_READY_TOKENS:-}}"
   while [ "$waited" -lt "$timeout" ]; do
     pane=$(_pane_tail "$sess" 20)
-    if printf '%s\n' "$pane" | grep -Eq 'Do you trust the files|Yes, I trust this folder|Quick safety check'; then
-      _sks_herdr send-keys -t "$sess" Enter
-    elif printf '%s\n' "$pane" | grep -q 'Yes, try it'; then
-      # Fullscreen-renderer upsell modal (not the idle /tui tip). Enter would
-      # accept and restart the session without permission flags — reject.
-      _sks_herdr send-keys -t "$sess" Escape
-    elif printf '%s\n' "$pane" | grep -q 'Yes, proceed'; then
-      _sks_herdr send-keys -t "$sess" Down
-      sleep 0.3
-      _sks_herdr send-keys -t "$sess" Enter
-    elif printf '%s\n' "$pane" | grep -q 'Resuming the full session'; then
-      _sks_herdr send-keys -t "$sess" Enter
-    elif printf '%s\n' "$pane" | grep -q 'Press Enter to continue'; then
-      _sks_herdr send-keys -t "$sess" Enter
-    elif printf '%s\n' "$pane" | grep -Eq "${_MAM_READY_TOKENS_CLAUDE:-Anthropic|Assistant|Chat|Welcome}"; then
+    now=$(date +%s)
+    pick=""
+    pick=$(_mam_dialog_pick "$pane" "$dialogs" "$auto_trust" "${_MAM_DIALOG_SENT:-}" "$now" "$cooldown" 2>/dev/null || true)
+    if [ -n "$pick" ]; then
+      action="${pick%%|*}"
+      rest="${pick#*|}"
+      idx="${rest%%|*}"
+      keys="${rest#*|}"
+      if [ "$action" = "send" ]; then
+        for key in $keys; do
+          _sks_herdr send-keys -t "$sess" "$key" || true
+          sleep 0.3
+        done
+      else
+        echo "handle_startup_dialogs: a trust dialog is open on '$sess' and --no-auto-trust was given; accept it manually" >&2
+      fi
+      _MAM_DIALOG_SENT="${_MAM_DIALOG_SENT:-} $idx:$now"
+    elif [ -n "$ready_re" ] && printf '%s\n' "$pane" | grep -Eq "$ready_re" 2>/dev/null; then
       return 0
     fi
     sleep 1
diff --git a/.agents/skills/lib_py/agents/__main__.py b/.agents/skills/lib_py/agents/__main__.py
index d437b75..0796dfb 100644
--- a/.agents/skills/lib_py/agents/__main__.py
+++ b/.agents/skills/lib_py/agents/__main__.py
@@ -63,6 +63,7 @@ def main():
         print(f"MAM_STRONG_READY_TOKENS={q(adapter.strong_ready_tokens)}")
         print(f"MAM_WEAK_READY_TOKENS={q(adapter.weak_ready_tokens)}")
         print(f"MAM_MODAL_TOKENS={q(adapter.modal_tokens or '')}")
+        print(f"MAM_STARTUP_DIALOGS={q(json.dumps(adapter.startup_dialogs))}")
         print(f"MAM_EXIT_KEY={q(adapter.exit_key)}")
         print(f"MAM_DELEGATE_AGENT_KEY={q(adapter.delegate_agent_key)}")
 
diff --git a/.agents/skills/lib_py/agents/adapters/agy.py b/.agents/skills/lib_py/agents/adapters/agy.py
index ba20214..948bc07 100644
--- a/.agents/skills/lib_py/agents/adapters/agy.py
+++ b/.agents/skills/lib_py/agents/adapters/agy.py
@@ -23,6 +23,15 @@ class AgyAgentAdapter(BaseAgentAdapter):
     def delegate_agent_key(self) -> str:
         return 'antigravity-cli'
 
+    @property
+    def startup_dialogs(self) -> list:
+        # #24: "Do you trust the contents of this project?" with
+        # "> Yes, I trust this folder" preselected - Enter accepts.
+        return [
+            ('Do you trust the contents of this project|Yes, I trust this folder',
+             ['Enter'], 'trust'),
+        ]
+
     @property
     def identity_cache_fields(self) -> tuple:
         return ('conversation_id', 'conversation_db', 'conversation_brain_dir')
diff --git a/.agents/skills/lib_py/agents/adapters/claude.py b/.agents/skills/lib_py/agents/adapters/claude.py
index 189334d..bf60fc7 100644
--- a/.agents/skills/lib_py/agents/adapters/claude.py
+++ b/.agents/skills/lib_py/agents/adapters/claude.py
@@ -44,6 +44,19 @@ class ClaudeAgentAdapter(BaseAgentAdapter):
     def modal_tokens(self) -> Optional[str]:
         return 'Try the new fullscreen renderer\\?'
 
+    @property
+    def startup_dialogs(self) -> list:
+        # The ladder handle_startup_dialogs used to hardcode, unchanged.
+        return [
+            ('Do you trust the files|Yes, I trust this folder|Quick safety check', ['Enter'], 'trust'),
+            # Fullscreen-renderer upsell, not the idle /tui tip: Enter would
+            # accept and restart the session without the permission flags.
+            ('Yes, try it', ['Escape'], 'notice'),
+            ('Yes, proceed', ['Down', 'Enter'], 'trust'),
+            ('Resuming the full session', ['Enter'], 'notice'),
+            ('Press Enter to continue', ['Enter'], 'notice'),
+        ]
+
     def artifact_path(self, uuid: str, ctx: DiscoveryContext) -> str:
         return f"{ctx.claude_dir}/{ctx.ws_key}/{uuid}.jsonl"
 
diff --git a/.agents/skills/lib_py/agents/adapters/codex.py b/.agents/skills/lib_py/agents/adapters/codex.py
index 1e7a5c7..8b688fc 100644
--- a/.agents/skills/lib_py/agents/adapters/codex.py
+++ b/.agents/skills/lib_py/agents/adapters/codex.py
@@ -24,6 +24,20 @@ class CodexAgentAdapter(BaseAgentAdapter):
     def delegate_agent_key(self) -> str:
         return 'codex-cli'
 
+    @property
+    def startup_dialogs(self) -> list:
+        # #24: the trust prompt lists "1. Yes, continue" preselected, so Enter
+        # accepts. Trust here also loads this project's local config, hooks and
+        # exec policy, which is why --no-auto-trust exists.
+        #
+        # The 0.155.1 update notice (observed 2026-09-22) blocks the session the
+        # same way; "2" is Skip, the choice that changes nothing.
+        return [
+            ('Do you trust the contents of this directory|1\\. Yes, continue',
+             ['Enter'], 'trust'),
+            ('1\\. Update now|Skip until next version', ['2'], 'notice'),
+        ]
+
     @property
     def identity_cache_fields(self) -> tuple:
         return ('session_id',)
diff --git a/.agents/skills/lib_py/agents/adapters/grok.py b/.agents/skills/lib_py/agents/adapters/grok.py
index 3f27860..055a4ab 100644
--- a/.agents/skills/lib_py/agents/adapters/grok.py
+++ b/.agents/skills/lib_py/agents/adapters/grok.py
@@ -26,6 +26,13 @@ class GrokAgentAdapter(BaseAgentAdapter):
     def delegate_agent_key(self) -> str:
         return 'grok-build'
 
+    @property
+    def startup_dialogs(self) -> list:
+        # #24: "Do you trust the contents of this directory?" answered with y.
+        return [
+            ('Do you trust the contents of this directory', ['y'], 'trust'),
+        ]
+
     @property
     def identity_cache_fields(self) -> tuple:
         return ('session_id', 'session_jsonl')
diff --git a/.agents/skills/lib_py/agents/base.py b/.agents/skills/lib_py/agents/base.py
index bd2221a..75d47ef 100644
--- a/.agents/skills/lib_py/agents/base.py
+++ b/.agents/skills/lib_py/agents/base.py
@@ -156,6 +156,21 @@ class BaseAgentAdapter:
     def modal_tokens(self) -> Optional[str]:
         return None
 
+    @property
+    def startup_dialogs(self) -> List[tuple]:
+        """Blocking modals this CLI can show before its TUI is usable, most
+        specific first: (pattern, keys, kind).
+
+        `pattern` is an extended-regex signature matched against the pane tail,
+        `keys` are herdr send-keys arguments sent in order, and `kind` is
+        'trust' (a directory-trust prompt, gated by --auto-trust) or 'notice'
+        (anything else that blocks the start, always answered).
+
+        Issue #24: without this the start-up trust prompts of agy, grok and
+        codex burn the whole readiness timeout and onboarding is skipped.
+        """
+        return []
+
     @property
     def strong_ready_tokens(self) -> str:
         return self.ready_tokens
diff --git a/.agents/skills/multi-agent-mux-create/scripts/create_session.sh b/.agents/skills/multi-agent-mux-create/scripts/create_session.sh
index c8f8d81..de59d5f 100755
--- a/.agents/skills/multi-agent-mux-create/scripts/create_session.sh
+++ b/.agents/skills/multi-agent-mux-create/scripts/create_session.sh
@@ -43,6 +43,7 @@ Options:
                           use --herdr-session for that.
   --submit-job PROMPT submit a job to multi-agent-mux-delegate-job registry with the given prompt
   --onboard           automatically submit a project alignment/orientation job to the new agent
+  --no-auto-trust     do not answer a start-up directory-trust dialog (default: answer it)
   --no-onboard        disable automatic onboarding job submission
   --no-isolate        legacy flag (no-op; all sessions use global configuration)
   --isolate           legacy flag (no-op; all sessions use global configuration)
@@ -60,6 +61,11 @@ HERDR_SERVER_OPT=""
 HERDR_WORKSPACE_OPT=""
 SUBMIT_JOB_PROMPT=""
 ONBOARD=1
+# Issue #24: answer a start-up directory-trust dialog for the --workspace the
+# operator named. --no-auto-trust leaves those unanswered (notices are always
+# answered); codex in particular loads project-local config, hooks and exec
+# policy once trusted.
+AUTO_TRUST=1
 
 while [ $# -gt 0 ]; do
   case "$1" in
@@ -74,6 +80,8 @@ while [ $# -gt 0 ]; do
     --submit-job) SUBMIT_JOB_PROMPT="$2"; shift 2 ;;
     --onboard)   ONBOARD=1; shift ;;
     --no-onboard) ONBOARD=0; shift ;;
+    --auto-trust) AUTO_TRUST=1; shift ;;
+    --no-auto-trust) AUTO_TRUST=0; shift ;;
     --isolate)   echo "NOTE: --isolate/--no-isolate is a no-op — config-home isolation was removed; sessions always use global config." >&2; shift ;; # legacy compatibility
     --no-isolate) echo "NOTE: --isolate/--no-isolate is a no-op — config-home isolation was removed; sessions always use global config." >&2; shift ;;
     -h|--help)   usage; exit 0 ;;
@@ -81,6 +89,8 @@ while [ $# -gt 0 ]; do
   esac
 done
 
+export MAM_AUTO_TRUST="$AUTO_TRUST"
+
 if [ -n "$HERDR_SERVER_OPT" ]; then
   export HERDR_SESSION_NAME="$HERDR_SERVER_OPT"
 fi
@@ -331,8 +341,11 @@ if [ "$TUI_READY_RC" -ne 0 ]; then
   fi
 fi
 
-if [ "$AGENT" = "claude" ] && [ -z "$LAST_VISIBLE_STATUS_OVERRIDE" ]; then
-  handle_startup_dialogs "$SESSION_NAME" 15
+# Issue #24: every agent, not only claude. The signatures and accept keys come
+# from the agent adapter, so an agy/grok/codex trust prompt is answered here
+# too instead of sitting until the readiness wait gives up.
+if [ -z "$LAST_VISIBLE_STATUS_OVERRIDE" ]; then
+  handle_startup_dialogs "$SESSION_NAME" 15 "$AGENT"
 fi
 
 # pane 메타 캡처
diff --git a/tests/test_b19_headless_reconcile_fixes.py b/tests/test_b19_headless_reconcile_fixes.py
index 7e618e4..4f925cd 100644
--- a/tests/test_b19_headless_reconcile_fixes.py
+++ b/tests/test_b19_headless_reconcile_fixes.py
@@ -282,13 +282,19 @@ if _pane_dialog_open dummy; then echo "DIALOG_OPEN"; else echo "DIALOG_CLOSED";
 
 
 def test_mam_dialog_tokens_exclude_yes_try_it():
-    """N-1 / F-1: token list must not contain Yes, try it; Escape branch stays."""
+    """N-1 / F-1: token list must not contain Yes, try it; Escape branch stays.
+
+    Issue #24 moved the per-agent ladder out of lib.sh into the agent adapter,
+    so the Escape branch is now claude's own `startup_dialogs` entry. The two
+    token-list assertions are unchanged; only where the branch lives moved.
+    """
     content = open(_LIB_SH, encoding="utf-8").read()
     modal_line = next(l for l in content.splitlines() if l.startswith("_MAM_MODAL_TOKENS="))
     hint_line = next(l for l in content.splitlines() if l.startswith("_MAM_HINT_TOKENS="))
     assert "Yes, try it" not in modal_line
     assert "Yes, try it" not in hint_line
-    assert "grep -q 'Yes, try it'" in content
+    adapter = os.path.join(os.path.dirname(_LIB_SH), "lib_py", "agents", "adapters", "claude.py")
+    assert "('Yes, try it', ['Escape'], 'notice')" in open(adapter, encoding="utf-8").read()
 
 
 def test_wait_for_tui_ready_succeeds_on_fullscreen_tip():
diff --git a/tests/test_c1_tui_readiness.py b/tests/test_c1_tui_readiness.py
index e91daba..96a14c7 100644
--- a/tests/test_c1_tui_readiness.py
+++ b/tests/test_c1_tui_readiness.py
@@ -55,7 +55,16 @@ if _pane_dialog_open dummy; then echo "DIALOG_OPEN"; else echo "DIALOG_CLOSED";
 
 
 def test_c1b_hint_press_enter_sends_enter():
-    """C-1b (B-3): 'Press Enter to continue' alone must return dialog CLOSED, and wait_for_tui_ready must send Enter exactly once per iteration (30 total across 30 iterations, not 60)."""
+    """C-1b (B-3): 'Press Enter to continue' alone must return dialog CLOSED,
+    and wait_for_tui_ready must never send Enter twice for one frame.
+
+    Issue #24 replaced "once per iteration" with a time cooldown
+    (MAM_DIALOG_RESEND_S): a `--source visible` snapshot keeps showing an
+    accepted dialog for a while, so re-sending on every poll types into a TUI
+    that already moved on. This test stubs `sleep`, so the wall clock barely
+    advances and one cooldown window covers the whole run - hence 1, not 30.
+    The guard the case was written for (never 2 per iteration) is unchanged
+    and strictly stronger now."""
     screen = """Some startup banner
 Press Enter to continue
 """
@@ -73,7 +82,7 @@ export MAM_STRONG_READY_TOKENS='NonExistentStrong'
 export MAM_WEAK_READY_TOKENS=''
 export MAM_INPUT_PLACEHOLDER=''
 rc=0
-wait_for_tui_ready dummy-sess custom || rc=$?
+wait_for_tui_ready dummy-sess claude || rc=$?
 echo "RC=$rc"
 echo "KEYS_COUNT=$(grep -c "send-keys -t dummy-sess Enter" "$KEYS" || echo 0)"
 rm -f "$KEYS"
@@ -81,7 +90,9 @@ rm -f "$KEYS"
     res = _run_lib_helpers(script)
     assert res.returncode == 0, res.stderr + res.stdout
     assert "DIALOG_CLOSED" in res.stdout
-    assert "KEYS_COUNT=30" in res.stdout
+    count = int(res.stdout.split("KEYS_COUNT=")[1].split()[0])
+    assert count >= 1, "the dialog was never answered: " + res.stdout
+    assert count <= 30, "one frame must never be answered twice: " + res.stdout
 
 
 def test_c1c_transition_to_upsell_modal_sends_escape_not_enter():
diff --git a/tests/test_issue23_24_startup_path.py b/tests/test_issue23_24_startup_path.py
index c5d8d3f..c73ec4c 100644
--- a/tests/test_issue23_24_startup_path.py
+++ b/tests/test_issue23_24_startup_path.py
@@ -302,3 +302,145 @@ def test_s13_the_loop_watcher_applies_the_same_rule(mam_sandbox):
 
     watcher.wait_once("agt", session="iso-x", run=_run)
     assert seen["env"] is not None and "HERDR_SESSION" not in ("",)
+
+
+# --------------------------------------------------------------------------
+# item 2 — start-up dialogs come from the adapter (#24)
+#
+# MOCKED, and this is the limit of it: the pane text is a fixture string and
+# send-keys is a shell stub, so these fix OUR contract - which screen signature
+# gets which keys, once. They do NOT show that the keys drive a real agy, grok,
+# codex or opencode TUI; no such TUI can be started in this environment. That
+# check is a live herdr run after the loop.
+# --------------------------------------------------------------------------
+
+def _run_dialogs(tmp_path, agent, pane_text, timeout=1, env=None, prelude=""):
+    lib = tmp_path / ".agents" / "skills" / "lib.sh"
+    pane_file = tmp_path / "pane.txt"
+    pane_file.write_text(pane_text)
+    keys_log = tmp_path / "sent_keys.txt"
+    if keys_log.exists():
+        keys_log.unlink()
+    script = '''
+source "%s"
+_pane_tail() { cat "%s"; }
+_sks_herdr() { printf '%%s\\n' "$*" >> "%s"; }
+%s
+handle_startup_dialogs test-sess %d %s
+echo "rc=$?"
+''' % (lib, pane_file, keys_log, prelude, timeout, agent)
+    run_env = dict(os.environ)
+    run_env.pop("MAM_AUTO_TRUST", None)
+    run_env.update(env or {})
+    res = subprocess.run(["bash", "-c", script], capture_output=True, text=True,
+                         cwd=str(tmp_path), env=run_env)
+    sent = keys_log.read_text().splitlines() if keys_log.exists() else []
+    return res, sent
+
+
+AGENT_DIALOGS = [
+    ("agy", "Do you trust the contents of this project?\n > Yes, I trust this folder",
+     ["send-keys -t test-sess Enter"]),
+    ("grok", "Do you trust the contents of this directory?",
+     ["send-keys -t test-sess y"]),
+    ("codex", "Do you trust the contents of this directory?\n > 1. Yes, continue",
+     ["send-keys -t test-sess Enter"]),
+    ("codex", "Update available\n 1. Update now\n 2. Skip\n 3. Skip until next version",
+     ["send-keys -t test-sess 2"]),
+    ("claude", "Do you trust the files in this folder?\n Yes, I trust this folder",
+     ["send-keys -t test-sess Enter"]),
+    ("claude", "Try the new fullscreen renderer?\n Yes, try it",
+     ["send-keys -t test-sess Escape"]),
+]
+
+
+@pytest.mark.parametrize("agent,pane,expected", AGENT_DIALOGS)
+def test_s4_each_agents_dialog_signature_gets_its_own_keys(
+        mam_sandbox, agent, pane, expected):
+    """S4 (stubbed pane + stubbed send-keys): the adapter's signature is
+    matched and exactly its keys are sent."""
+    res, sent = _run_dialogs(mam_sandbox, agent, pane)
+    assert sent == expected, (res.stdout, res.stderr, sent)
+
+
+def test_s4b_every_adapter_publishes_the_fact(mam_sandbox):
+    """S4b (real `lib_py.agents facts`): MAM_STARTUP_DIALOGS is part of the
+    facts contract for every agent, so the shell never has to know an agent
+    name. An agent with no known blocking modal publishes an empty list."""
+    repo = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    skills = os.path.join(repo, ".agents", "skills")
+    seen = {}
+    for agent in ("claude", "agy", "grok", "codex", "opencode", "hermes"):
+        out = subprocess.run(
+            [os.path.join(repo, ".venv", "bin", "python"), "-m", "lib_py.agents",
+             "facts", agent],
+            capture_output=True, text=True, cwd=repo,
+            env=dict(os.environ, PYTHONPATH=skills)).stdout
+        line = [l for l in out.splitlines() if l.startswith("MAM_STARTUP_DIALOGS=")]
+        assert line, "no MAM_STARTUP_DIALOGS for %s" % agent
+        seen[agent] = json.loads(line[0].split("=", 1)[1].strip("'"))
+    for agent in ("claude", "agy", "grok", "codex"):
+        assert seen[agent], "%s must publish its start-up dialogs" % agent
+        for pattern, keys, kind in seen[agent]:
+            assert kind in ("trust", "notice"), (agent, kind)
+            assert keys, (agent, pattern)
+    assert seen["opencode"] == [] and seen["hermes"] == []
+
+
+def test_s5_an_accepted_dialog_still_on_screen_is_not_resent(mam_sandbox):
+    """S5 (stubbed pane + stubbed send-keys): #24's comment reports that
+    `--source visible` keeps showing the dialog for a while after it was
+    accepted, and _pane_capture hardcodes that source. The pane here never
+    changes, so a frame-count rule would send the keys again every poll; the
+    time cooldown must keep it at one."""
+    res, sent = _run_dialogs(
+        mam_sandbox, "grok", "Do you trust the contents of this directory?",
+        timeout=3, env={"MAM_DIALOG_RESEND_S": "60"})
+    assert sent == ["send-keys -t test-sess y"], (res.stdout, res.stderr, sent)
+
+
+def test_s5b_the_cooldown_expiring_allows_one_more_try(mam_sandbox):
+    """S5b: the cooldown is a rate limit, not a one-shot - a dialog that really
+    did not take the keys is retried once the window passes."""
+    res, sent = _run_dialogs(
+        mam_sandbox, "grok", "Do you trust the contents of this directory?",
+        timeout=4, env={"MAM_DIALOG_RESEND_S": "1"})
+    assert len(sent) >= 2, (res.stdout, res.stderr, sent)
+    assert set(sent) == {"send-keys -t test-sess y"}, sent
+
+
+def test_s5c_readiness_is_judged_by_the_ready_tokens_not_by_the_dialog_leaving(
+        mam_sandbox):
+    """S5c: a ready screen returns 0 without sending anything."""
+    res, sent = _run_dialogs(mam_sandbox, "grok", "Grok ready\n>>> ", timeout=3)
+    assert sent == [], sent
+    assert "rc=0" in res.stdout, res.stdout + res.stderr
+
+
+def test_s6_no_auto_trust_leaves_trust_dialogs_alone_but_answers_notices(
+        mam_sandbox):
+    """S6 (stubbed): --no-auto-trust. codex trust is left to a human with a
+    warning; the update notice still gets answered, since skipping it changes
+    nothing and it blocks the session just as hard."""
+    res, sent = _run_dialogs(
+        mam_sandbox, "codex", "Do you trust the contents of this directory?\n > 1. Yes, continue",
+        timeout=1, env={"MAM_AUTO_TRUST": "0"})
+    assert sent == [], sent
+    assert "no-auto-trust" in res.stderr, res.stderr
+
+    res, sent = _run_dialogs(
+        mam_sandbox, "codex", "Update available\n 1. Update now\n 3. Skip until next version",
+        timeout=1, env={"MAM_AUTO_TRUST": "0"})
+    assert sent == ["send-keys -t test-sess 2"], (res.stderr, sent)
+
+
+def test_s6b_create_session_no_longer_gates_dialogs_on_claude(mam_sandbox):
+    """S6b (source read): the #24 root cause was the `AGENT = claude` gate at
+    the create_session call site, so the gate's absence is the regression."""
+    repo = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    src = open(os.path.join(repo, ".agents", "skills", "multi-agent-mux-create",
+                            "scripts", "create_session.sh")).read()
+    call = [l for l in src.splitlines() if "handle_startup_dialogs" in l]
+    assert call, "create_session no longer answers start-up dialogs at all"
+    assert all('"$AGENT"' in l for l in call), call
+    assert 'if [ "$AGENT" = "claude" ] && [ -z "$LAST_VISIBLE_STATUS_OVERRIDE" ]' not in src