feat(profiler/behave_shell): G.1 operational.objective

Per-command intent classification via the G.0 lexicon
(`destructive > persistence > exfil > lateral > recon` precedence);
majority vote across classified commands. Skip emission below
INTENT_MIN_COMMANDS=3 classified hits. Confidence 0.40 below
INTENT_FULL_CONFIDENCE_MIN=6, 0.60 above.

tests/profiler/behave_shell/test_operational_objective.py

@@ -0,0 +1,116 @@
+"""Step G.1: ``operational.objective`` ∈ {recon, exfil, persistence,
+lateral, destructive}."""
+from __future__ import annotations
+
+from decnet.profiler.behave_shell import extract_session
+from decnet.profiler.behave_shell._parse import AsciinemaEvent
+
+
+PRIMITIVE = "operational.objective"
+
+
+def _of(observations: list, primitive: str):
+    obs = [o for o in observations if o.primitive == primitive]
+    assert len(obs) == 1, f"expected exactly one {primitive}, got {len(obs)}"
+    return obs[0]
+
+
+def _typed(text: str, t0: float = 0.0, dt: float = 0.05) -> list[AsciinemaEvent]:
+    return [(t0 + i * dt, "i", c) for i, c in enumerate(text)]
+
+
+def _cmd(token: str, t0: float, *, with_prompt: bool = True) -> list[AsciinemaEvent]:
+    events = _typed(f"{token}\r", t0=t0)
+    cmd_end = t0 + len(token) * 0.05
+    if with_prompt:
+        events.append((cmd_end + 0.10, "o", "out\nanti@host:~$ "))
+    else:
+        events.append((cmd_end + 0.10, "o", "out\n"))
+    return events
+
+
+def test_no_commands_no_emission() -> None:
+    out = list(extract_session([(0.0, "i", "x")], sid="g1-empty"))
+    assert [o for o in out if o.primitive == PRIMITIVE] == []
+
+
+def test_too_few_classified_skipped() -> None:
+    """Two recon commands < INTENT_MIN_COMMANDS=3 → no emission."""
+    events = _cmd("ls", t0=0.0) + _cmd("pwd", t0=1.0)
+    out = list(extract_session(events, sid="g1-thin"))
+    assert [o for o in out if o.primitive == PRIMITIVE] == []
+
+
+def test_unclassified_commands_skipped() -> None:
+    """``vim`` / ``foo`` / ``bar`` aren't in any intent set."""
+    events = (
+        _cmd("vim", t0=0.0)
+        + _cmd("foo", t0=1.0)
+        + _cmd("bar", t0=2.0)
+        + _cmd("baz", t0=3.0)
+    )
+    out = list(extract_session(events, sid="g1-unkn"))
+    assert [o for o in out if o.primitive == PRIMITIVE] == []
+
+
+def test_majority_recon_emits_recon() -> None:
+    events = (
+        _cmd("ls", t0=0.0)
+        + _cmd("pwd", t0=1.0)
+        + _cmd("whoami", t0=2.0)
+    )
+    obs = _of(list(extract_session(events, sid="g1-recon")), PRIMITIVE)
+    assert obs.value == "recon"
+    assert 0.39 < obs.confidence <= 0.60
+
+
+def test_majority_destructive_outranks_recon() -> None:
+    """Mixed: 3 destructive + 2 recon → destructive."""
+    events = (
+        _cmd("rm", t0=0.0)
+        + _cmd("ls", t0=1.0)
+        + _cmd("dd", t0=2.0)
+        + _cmd("pwd", t0=3.0)
+        + _cmd("shred", t0=4.0)
+    )
+    obs = _of(list(extract_session(events, sid="g1-dest")), PRIMITIVE)
+    assert obs.value == "destructive"
+
+
+def test_high_count_raises_confidence() -> None:
+    events: list[AsciinemaEvent] = []
+    for i, tok in enumerate(["ls", "pwd", "whoami", "id", "uname", "ps", "find"]):
+        events += _cmd(tok, t0=float(i))
+    obs = _of(list(extract_session(events, sid="g1-conf")), PRIMITIVE)
+    assert obs.value == "recon"
+    assert obs.confidence == 0.60
+
+
+def test_persistence_classifies() -> None:
+    events = (
+        _cmd("crontab", t0=0.0)
+        + _cmd("systemctl", t0=1.0)
+        + _cmd("passwd", t0=2.0)
+    )
+    obs = _of(list(extract_session(events, sid="g1-persist")), PRIMITIVE)
+    assert obs.value == "persistence"
+
+
+def test_exfil_classifies() -> None:
+    events = (
+        _cmd("curl", t0=0.0)
+        + _cmd("wget", t0=1.0)
+        + _cmd("scp", t0=2.0)
+    )
+    obs = _of(list(extract_session(events, sid="g1-exfil")), PRIMITIVE)
+    assert obs.value == "exfil"
+
+
+def test_lateral_classifies() -> None:
+    events = (
+        _cmd("ssh", t0=0.0)
+        + _cmd("kubectl", t0=1.0)
+        + _cmd("docker", t0=2.0)
+    )
+    obs = _of(list(extract_session(events, sid="g1-lat")), PRIMITIVE)
+    assert obs.value == "lateral"