test: add tests for cmd_key preservation through name clamping

- TestClampCommandNamesTriples: unit tests for 3-tuple support in
  _clamp_command_names (short names, long names, collisions, multiple
  entries, backward compat with 2-tuples)
- TestDiscordSkillCmdKeyDispatch: integration test through the full
  discord_skill_commands pipeline verifying long skill names retain
  their original cmd_key after clamping
- Add contributor CharlieKerfoot to AUTHOR_MAP

tests/hermes_cli/test_commands.py

@@ -822,6 +822,103 @@ class TestClampTelegramNames:
         assert result[0] == ("foo", "d1")
 
 
+class TestClampCommandNamesTriples:
+    """Tests for _clamp_command_names with 3-tuples (name, desc, cmd_key).
+
+    Skill entries pass through _clamp_command_names as 3-tuples so the
+    original cmd_key survives name truncation.  Before the fix in PR #18951,
+    the code stripped cmd_key into a side-dict keyed by the *original*
+    (name, desc) pair — after truncation the lookup key no longer matched,
+    silently losing the cmd_key.
+    """
+
+    def test_short_triple_preserved(self):
+        entries = [("skill", "A skill", "/skill")]
+        result = _clamp_command_names(entries, set())
+        assert result == [("skill", "A skill", "/skill")]
+
+    def test_long_name_preserves_cmd_key(self):
+        long = "a" * 50
+        cmd_key = f"/{long}"
+        result = _clamp_command_names([(long, "desc", cmd_key)], set())
+        assert len(result) == 1
+        name, desc, key = result[0]
+        assert len(name) == _CMD_NAME_LIMIT
+        assert key == cmd_key, "cmd_key must survive name clamping"
+
+    def test_collision_preserves_cmd_key(self):
+        prefix = "x" * _CMD_NAME_LIMIT
+        long = "x" * 50
+        result = _clamp_command_names(
+            [(long, "desc", "/long-skill")], reserved={prefix},
+        )
+        assert len(result) == 1
+        name, _desc, key = result[0]
+        assert name == "x" * (_CMD_NAME_LIMIT - 1) + "0"
+        assert key == "/long-skill"
+
+    def test_multiple_long_names_preserve_respective_keys(self):
+        base = "y" * 40
+        entries = [
+            (base + "_alpha", "d1", "/alpha-skill"),
+            (base + "_beta", "d2", "/beta-skill"),
+        ]
+        result = _clamp_command_names(entries, set())
+        assert len(result) == 2
+        assert result[0][2] == "/alpha-skill"
+        assert result[1][2] == "/beta-skill"
+
+    def test_backward_compat_with_pairs(self):
+        """Legacy 2-tuple callers (Telegram) must still work."""
+        entries = [("help", "Show help"), ("status", "Show status")]
+        result = _clamp_command_names(entries, set())
+        assert result == entries
+
+
+class TestDiscordSkillCmdKeyDispatch:
+    """Integration: discord_skill_commands preserves cmd_key for long names.
+
+    This tests the full pipeline: skill_commands → _collect_gateway_skill_entries
+    → _clamp_command_names → returned triples, verifying that skills with names
+    exceeding Discord's 32-char limit still have their original cmd_key for
+    dispatch.
+    """
+
+    def test_long_skill_name_retains_cmd_key(self, tmp_path, monkeypatch):
+        from unittest.mock import patch
+
+        long_name = "this-is-a-very-long-skill-name-that-exceeds-limit"
+        cmd_key = f"/{long_name}"
+        fake_skills_dir = tmp_path / "skills"
+        fake_skills_dir.mkdir(exist_ok=True)
+        # Use resolved path — macOS /var → /private/var symlink
+        # causes SKILLS_DIR.resolve() to differ from tmp_path.
+        resolved_dir = str(fake_skills_dir.resolve())
+
+        fake_cmds = {
+            cmd_key: {
+                "name": long_name,
+                "description": "A skill with a long name",
+                "skill_md_path": f"{resolved_dir}/{long_name}/SKILL.md",
+                "skill_dir": f"{resolved_dir}/{long_name}",
+            },
+        }
+
+        with patch("agent.skill_commands.get_skill_commands", return_value=fake_cmds), \
+             patch("tools.skills_tool.SKILLS_DIR", fake_skills_dir), \
+             patch("agent.skill_utils.get_external_skills_dirs", return_value=[]):
+            entries, hidden = discord_skill_commands(
+                max_slots=100, reserved_names=set(),
+            )
+
+        assert len(entries) == 1
+        name, desc, key = entries[0]
+        assert len(name) <= _CMD_NAME_LIMIT, "Name should be clamped to 32 chars"
+        assert key == cmd_key, (
+            f"cmd_key must be the original /{long_name}, got {key!r}"
+        )
+
+
 class TestTelegramMenuCommands:
     """Integration: telegram_menu_commands enforces the 32-char limit."""
 

tests/hermes_cli/test_discord_skill_clamp_warning.py

@@ -169,3 +169,78 @@ def test_no_collision_no_warning(tmp_path: Path, caplog) -> None:
         and ("clamp" in r.getMessage() or "reserved" in r.getMessage())
     ]
     assert clamp_warnings == []
+
+
+def test_long_skill_name_preserves_cmd_key_through_by_category(
+    tmp_path: Path,
+) -> None:
+    """Skills with names > 32 chars must keep their original cmd_key.
+
+    ``discord_skill_commands_by_category`` clamps the display name to 32
+    chars but the third tuple element (cmd_key) must stay as the original
+    ``/full-skill-name`` so that ``_skill_handler`` dispatches via
+    ``_run_simple_slash`` with the full command, not the truncated one.
+
+    This is the actual runtime path used by the Discord adapter via
+    ``_refresh_skill_catalog_state``.
+    """
+    from hermes_cli.commands import discord_skill_commands_by_category
+
+    skills_dir = tmp_path / "skills"
+    skills_dir.mkdir()
+    resolved = str(skills_dir.resolve())
+
+    long_name = "generate-ascii-art-from-text-description-detailed"
+    cmd_key = f"/{long_name}"
+    fake_cmds = {
+        cmd_key: {
+            "name": long_name,
+            "description": "Generate ASCII art from a text description",
+            "skill_md_path": f"{resolved}/creative/{long_name}/SKILL.md",
+            "skill_dir": f"{resolved}/creative/{long_name}",
+        },
+        "/short-skill": {
+            "name": "short-skill",
+            "description": "A short skill",
+            "skill_md_path": f"{resolved}/creative/short-skill/SKILL.md",
+            "skill_dir": f"{resolved}/creative/short-skill",
+        },
+    }
+
+    with patch("agent.skill_commands.get_skill_commands", return_value=fake_cmds), \
+         patch("tools.skills_tool.SKILLS_DIR", skills_dir):
+        categories, uncategorized, hidden = discord_skill_commands_by_category(
+            reserved_names=set(),
+        )
+
+    # Flatten (same as _refresh_skill_catalog_state does)
+    entries = list(uncategorized)
+    for cat_skills in categories.values():
+        entries.extend(cat_skills)
+
+    # Build lookup (same as _refresh_skill_catalog_state does)
+    skill_lookup = {n: (d, k) for n, d, k in entries}
+
+    # Find the long skill
+    long_entry = [e for e in entries if e[2] == cmd_key]
+    assert len(long_entry) == 1, f"Long skill should appear once, got: {long_entry}"
+
+    display_name, desc, key = long_entry[0]
+    assert len(display_name) <= 32, (
+        f"Display name should be clamped to 32 chars, got {len(display_name)}"
+    )
+    assert key == cmd_key, (
+        f"cmd_key must be the original /{long_name}, got {key!r}"
+    )
+
+    # Verify lookup works: clamped display name -> original cmd_key
+    assert display_name in skill_lookup
+    _desc, looked_up_key = skill_lookup[display_name]
+    assert looked_up_key == cmd_key, (
+        f"Lookup must map clamped name to original cmd_key, got {looked_up_key!r}"
+    )
+
+    # Short skill should also be present and correct
+    short_entry = [e for e in entries if e[2] == "/short-skill"]
+    assert len(short_entry) == 1
+    assert short_entry[0][0] == "short-skill"