feat: add readable duplex messaging

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a03397-4d51-7fd1-8ff2-946eb22ea2bc

tests/test_ptytap.py

@@ -4,7 +4,13 @@ import pty
 import struct
 import termios
 
-from tamq.ptytap import PtyTap, copy_winsize, observed_line, write_all
+from tamq.ptytap import (
+    PtyTap,
+    TerminalOutputObserver,
+    copy_winsize,
+    observed_line,
+    write_all,
+)
 
 
 class RecordingBroker:
@@ -13,7 +19,7 @@ class RecordingBroker:
 
     def inspect_line(self, line):
         self.lines.append(line)
-        return line.startswith(("@", "#"))
+        return line.startswith("To:")
 
 
 def test_input_observer_accepts_raw_terminal_carriage_returns():
@@ -22,11 +28,11 @@ def test_input_observer_accepts_raw_terminal_carriage_returns():
     tap = PtyTap(["true"], broker, on_line=observed.append)
     buffer = bytearray()
 
-    tap._observe_input(buffer, b"#activity-core: hel")
+    tap._observe_input(buffer, b"To:activity-core: hel")
     tap._observe_input(buffer, b"lo\rplain line\n")
 
-    assert broker.lines == ["#activity-core: hello", "plain line"]
-    assert observed == ["#activity-core: hello"]
+    assert broker.lines == ["To:activity-core: hello", "plain line"]
+    assert observed == ["To:activity-core: hello"]
 
 
 def test_input_observer_accepts_enhanced_terminal_enter_sequences():
@@ -35,17 +41,17 @@ def test_input_observer_accepts_enhanced_terminal_enter_sequences():
     tap = PtyTap(["true"], broker, on_line=observed.append)
     buffer = bytearray()
 
-    tap._observe_input(buffer, b"#activity-core: CSI-u\x1b[13;1")
+    tap._observe_input(buffer, b"To:activity-core: CSI-u\x1b[13;1")
     assert broker.lines == []
-    tap._observe_input(buffer, b":1u#other: modify\x1b[27;1;13~")
+    tap._observe_input(buffer, b":1uTo:other: modify\x1b[27;1;13~")
     tap._observe_input(buffer, b"plain\x1bOM")
 
     assert broker.lines == [
-        "#activity-core: CSI-u",
-        "#other: modify",
+        "To:activity-core: CSI-u",
+        "To:other: modify",
         "plain",
     ]
-    assert observed == ["#activity-core: CSI-u", "#other: modify"]
+    assert observed == ["To:activity-core: CSI-u", "To:other: modify"]
 
 
 def test_input_observer_ignores_terminal_replies_before_typed_line():
@@ -55,20 +61,36 @@ def test_input_observer_ignores_terminal_replies_before_typed_line():
     buffer = bytearray()
 
     tap._observe_input(buffer, b"\x1b[9;1R\x1b[?1;2;4c")
-    tap._observe_input(buffer, b"#activity-core: Helol\x7f\x7flo\r")
+    tap._observe_input(buffer, b"To:activity-core: Helol\x7f\x7flo\r")
 
-    assert broker.lines == ["#activity-core: Hello"]
-    assert observed == ["#activity-core: Hello"]
+    assert broker.lines == ["To:activity-core: Hello"]
+    assert observed == ["To:activity-core: Hello"]
 
 
 def test_observed_line_removes_common_terminal_protocol_wrappers():
     raw = (
-        b"\x1b[200~#target: pasted\x1b[201~"
+        b"\x1b[200~To:target: pasted\x1b[201~"
         b"\x1b]10;rgb:ffff/ffff/ffff\x07"
         b"\x1bP1$r0m\x1b\\"
     )
 
-    assert observed_line(raw) == "#target: pasted"
+    assert observed_line(raw) == "To:target: pasted"
+
+
+def test_output_observer_normalizes_ansi_and_deduplicates_redraws():
+    lines = []
+    observer = TerminalOutputObserver(lines.append)
+    observer.feed(b"plain\r\n\x1b[31mTo:target: worker\x1b[0m\r")
+    observer.feed(b"To:target: worker\r")
+    assert lines == ["plain", "To:target: worker"]
+
+
+def test_output_observer_fails_closed_on_recent_operator_echo():
+    lines = []
+    observer = TerminalOutputObserver(lines.append)
+    observer.note_operator_line("To:target: operator")
+    observer.feed(b"To:target: operator\r\nTo:target: worker\r\n")
+    assert lines == ["To:target: worker"]
 
 
 def test_copy_winsize_preserves_rows_columns_and_pixels():