Fix Slack output dedup and chunk forwarding

tests/test_bridge.py

@@ -45,6 +45,7 @@ class FakePtyManager:
         self.session_name = session_name
         self.cli_name = cli_name
         self._alive = False
+        self.sent_inputs: list[str] = []
         FakePtyManager.instances.append(self)
 
     @property
@@ -57,8 +58,8 @@ class FakePtyManager:
     def stop(self) -> None:
         self._alive = False
 
-    def send(self, _text: str) -> None:
-        return None
+    def send(self, text: str) -> None:
+        self.sent_inputs.append(text)
 
     def read_output(self, timeout: int = 5) -> str:
         return ""
@@ -104,6 +105,18 @@ def test_start_codex_routes_to_codex_session(monkeypatch) -> None:
     )
 
 
+def test_start_session_resets_output_dedup_state(monkeypatch) -> None:
+    FakePtyManager.instances.clear()
+    bridge = _make_bridge(monkeypatch)
+    bridge._last_sent_output = "stale"
+    bridge._last_sent_fingerprint = "stale-fp"
+
+    bridge._handle_command("start", "codex", "C1")
+
+    assert bridge._last_sent_output == ""
+    assert bridge._last_sent_fingerprint is None
+
+
 def test_unknown_target_is_rejected(monkeypatch) -> None:
     bridge = _make_bridge(monkeypatch)
 
@@ -113,3 +126,174 @@ def test_unknown_target_is_rejected(monkeypatch) -> None:
         "C1",
         ":warning: 지원하지 않는 대상입니다.",
     )
+
+
+def test_handle_message_resets_last_sent_output_after_input(monkeypatch) -> None:
+    FakePtyManager.instances.clear()
+    bridge = _make_bridge(monkeypatch)
+
+    bridge._handle_command("start", "codex", "C1")
+    pty = FakePtyManager.instances[-1]
+    bridge._last_sent_output = "previous output"
+
+    bridge._handle_message("status", "C1")
+
+    assert pty.sent_inputs[-1] == "status"
+    assert bridge._last_sent_output == ""
+    assert bridge._last_sent_fingerprint is None
+
+
+def test_split_message_preserves_all_content(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    chunks = bridge._split_message("line1\nline2\nline3", max_length=7)
+    assert "".join(chunks) == "line1\nline2\nline3"
+
+
+def test_split_message_preserves_trailing_whitespace_and_blank_line(
+    monkeypatch,
+) -> None:
+    bridge = _make_bridge(monkeypatch)
+    text = "ab  \n\ncd  "
+    chunks = bridge._split_message(text, max_length=4)
+    assert "".join(chunks) == text
+
+
+def test_send_output_chunks_sends_multiple_messages(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge._send_output_chunks("1234567890")
+
+    assert bridge.slack.sent_messages == [
+        ("C1", "```\n1234567890\n```"),
+    ]
+
+    bridge.config.max_message_length = 4
+    bridge.slack.sent_messages.clear()
+    bridge._send_output_chunks("abcdefghij")
+    assert bridge.slack.sent_messages == [
+        ("C1", "```\nabcd\n```"),
+        ("C1", "```\nefgh\n```"),
+        ("C1", "```\nij\n```"),
+    ]
+
+
+def test_send_output_chunks_skips_duplicate_snapshot(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge.config.max_message_length = 4
+
+    bridge._send_output_chunks("abcdefghij")
+    first = list(bridge.slack.sent_messages)
+
+    bridge._send_output_chunks("abcdefghij")
+    assert bridge.slack.sent_messages == first
+
+
+def test_send_output_chunks_skips_duplicate_with_volatile_status_line(
+    monkeypatch,
+) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge.config.max_message_length = 1000
+
+    first_output = (
+        "Would you like to make the following edits?\n"
+        "src/main.py (+68 -1)\n"
+        'odex] 0:node* [0,0] "jihoson-home" 05:12 17-Feb-26\n'
+        "Press enter to confirm or esc to cancel\n"
+    )
+    second_output = (
+        "Would you like to make the following edits?\n"
+        "src/main.py (+68 -1)\n"
+        'odex] 0:node* [0,0] "jihoson-home" 05:13 17-Feb-26\n'
+        "Press enter to confirm or esc to cancel\n"
+    )
+
+    bridge._send_output_chunks(first_output)
+    first = list(bridge.slack.sent_messages)
+
+    bridge._send_output_chunks(second_output)
+    assert bridge.slack.sent_messages == first
+
+
+def test_send_output_chunks_sends_first_when_fingerprint_is_empty(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    volatile_only = 'odex] 0:node* [0,0] "jihoson-home" 05:12 17-Feb-26\n'
+
+    bridge._send_output_chunks(volatile_only)
+    assert bridge.slack.sent_messages == [("C1", f"```\n{volatile_only.rstrip()}\n```")]
+
+    bridge._send_output_chunks(volatile_only)
+    assert bridge.slack.sent_messages == [("C1", f"```\n{volatile_only.rstrip()}\n```")]
+
+
+def test_send_output_chunks_keeps_non_tmux_timestamp_lines(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge.config.max_message_length = 1000
+
+    first_output = (
+        "report generated at 05:12 17-Feb-26\n"
+        "count=10\n"
+    )
+    second_output = (
+        "report generated at 05:13 17-Feb-26\n"
+        "count=10\n"
+    )
+
+    bridge._send_output_chunks(first_output)
+    bridge._send_output_chunks(second_output)
+
+    assert bridge.slack.sent_messages == [
+        ("C1", f"```\n{first_output.rstrip()}\n```"),
+        ("C1", f"```\n{second_output.rstrip()}\n```"),
+    ]
+
+
+def test_send_output_chunks_preserves_whitespace_signals(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge.config.max_message_length = 1000
+
+    first_output = "def f():\n    return 1\n"
+    second_output = "def f():\n  return 1\n"
+
+    bridge._send_output_chunks(first_output)
+    bridge._send_output_chunks(second_output)
+
+    assert bridge.slack.sent_messages == [
+        ("C1", f"```\n{first_output.rstrip()}\n```"),
+        ("C1", f"```\n{second_output.rstrip()}\n```"),
+    ]
+
+
+def test_send_output_chunks_keeps_standalone_time_lines(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge.config.max_message_length = 1000
+
+    bridge._send_output_chunks("[5:12 AM]\n")
+    bridge._send_output_chunks("[5:13 AM]\n")
+
+    assert bridge.slack.sent_messages == [
+        ("C1", "```\n[5:12 AM]\n```"),
+        ("C1", "```\n[5:13 AM]\n```"),
+    ]
+
+
+def test_send_output_chunks_keeps_non_tmux_status_like_lines(monkeypatch) -> None:
+    bridge = _make_bridge(monkeypatch)
+    bridge._channel = "C1"
+    bridge.config.max_message_length = 1000
+
+    first_output = '[2,3] "job-runner" 05:12 17-Feb-26\n'
+    second_output = '[2,3] "job-runner" 05:13 17-Feb-26\n'
+
+    bridge._send_output_chunks(first_output)
+    bridge._send_output_chunks(second_output)
+
+    assert bridge.slack.sent_messages == [
+        ("C1", "```\n[2,3] \"job-runner\" 05:12 17-Feb-26\n```"),
+        ("C1", "```\n[2,3] \"job-runner\" 05:13 17-Feb-26\n```"),
+    ]