feat: initial session-list plugin (/sl)

README.md

@@ -0,0 +1,46 @@
+# Hermes Plugin: Session List (/sl)
+
+Custom slash command for [Hermes Agent](https://github.com/NousResearch/hermes-agent) that replaces the built-in `/sessions` with configurable columns.
+
+## Features
+
+- Configurable columns (field, width, label) via `~/.hermes/session_list_config.yaml`
+- Token stats: cache hit, cache miss, output tokens
+- 1-based row numbers for `/resume <#>`
+- Survives `hermes update` (lives in `~/.hermes/plugins/`)
+
+## Install
+
+```bash
+hermes plugins install https://git.softmediadesign.com/git_alhan/hermes-plugin-session-list.git --enable
+```
+
+Then `/new` to reload.
+
+## Usage
+
+```
+/sl        # last 20 sessions
+/sl 5      # last 5 sessions
+```
+
+## Column Config
+
+Copy `session_list_config.example.yaml` to `~/.hermes/session_list_config.yaml` and customize:
+
+```yaml
+columns:
+  - {field: "#", width: 3, label: "#"}
+  - {field: title, width: 42, label: Title}
+  - {field: message_count, width: 5, label: Msgs}
+  - {field: cache_read_tokens, width: 7, label: hit}
+  - {field: input_tokens, width: 7, label: miss}
+  - {field: output_tokens, width: 7, label: out}
+  - {field: model, width: 10, label: Model}
+  - {field: source, width: 4, label: Src}
+  - {field: last_active, width: 11, label: Active}
+```
+
+Available fields: `#`, `id`, `source`, `model`, `title`, `started_at`, `ended_at`, `message_count`, `preview`, `last_active`, `input_tokens`, `output_tokens`, `total_tokens`, `net_input`, `net_total`, `cache_read_tokens`, `cache_write_tokens`, `reasoning_tokens`
+
+Set `width: 0` on the **last** column for free-form (no truncation).

__init__.py

@@ -0,0 +1,200 @@
+"""/sl — custom session list slash command.
+
+Reads column config from ~/.hermes/session_list_config.yaml and renders
+sessions with user-specified columns and widths.
+
+Special column: field "#" renders as the row index (1-based), compatible
+with /resume <number>.
+
+Survives `hermes update` because it lives in ~/.hermes/plugins/.
+"""
+from __future__ import annotations
+
+import time
+from datetime import datetime
+from pathlib import Path
+from typing import Optional
+
+
+# ── Helpers ──────────────────────────────────────────────────────────
+
+def _hermes_home() -> Path:
+    import os
+    return Path(os.environ.get("HERMES_HOME", os.path.expanduser("~/.hermes")))
+
+
+def _as_float(v):
+    if v is None:
+        return None
+    if isinstance(v, (int, float)):
+        return float(v)
+    try:
+        return float(v)
+    except (ValueError, TypeError):
+        return v
+
+
+def _relative_time(ts) -> str:
+    ts = _as_float(ts)
+    if not ts:
+        return "?"
+    delta = time.time() - ts
+    if delta < 60:
+        return "just now"
+    if delta < 3600:
+        return f"{int(delta / 60)}m ago"
+    if delta < 86400:
+        return f"{int(delta / 3600)}h ago"
+    if delta < 172800:
+        return "yesterday"
+    if delta < 604800:
+        return f"{int(delta / 86400)}d ago"
+    return datetime.fromtimestamp(ts).strftime("%Y-%m-%d")
+
+
+def _fmt_tokens(session: dict, field: str) -> str:
+    """Format token counts in human-readable form (e.g. '46.8K').
+    
+    Special computed fields:
+      total_tokens = input + output
+      net_input    = input - cache_read  (actual new prompt tokens)
+      net_total    = net_input + output  (actual billable tokens)
+    """
+    inp = _as_float(session.get("input_tokens")) or 0
+    out = _as_float(session.get("output_tokens")) or 0
+    cache = _as_float(session.get("cache_read_tokens")) or 0
+
+    if field == "total_tokens":
+        raw = inp + out
+    elif field == "net_input":
+        raw = max(0, inp - cache)
+    elif field == "net_total":
+        raw = max(0, inp - cache) + out
+    else:
+        raw = _as_float(session.get(field)) or 0
+
+    if raw >= 1_000_000:
+        return f"{raw / 1_000_000:.1f}M"
+    if raw >= 1_000:
+        return f"{raw / 1_000:.1f}K"
+    return str(int(raw))
+
+
+def _format_value(session: dict, field: str, index: int = 0) -> str:
+    """Format a single field value. *index* is the 1-based row number for '#' field."""
+    if field == "#":
+        return str(index)
+    raw = session.get(field)
+    if field == "last_active":
+        return _relative_time(raw)
+    if field in ("started_at", "ended_at"):
+        ts = _as_float(raw)
+        return datetime.fromtimestamp(ts).strftime("%Y-%m-%d %H:%M") if ts else "—"
+    if field == "title":
+        v = session.get(field)
+        if v is None or v == "None" or str(v).strip() == "":
+            return "—"
+        return str(v)[:40]
+    if field == "preview":
+        return (str(raw) if raw else "")[:80]
+    if field == "message_count":
+        return str(int(_as_float(raw) or 0))
+    if field == "model":
+        return (str(raw) if raw else "?")[:30]
+    if field == "source":
+        return str(raw) if raw else "?"
+    if field in ("input_tokens", "output_tokens", "cache_read_tokens",
+                 "cache_write_tokens", "reasoning_tokens",
+                 "total_tokens", "net_input", "net_total"):
+        return _fmt_tokens(session, field)
+    return str(raw) if raw is not None else ""
+
+
+def _build_header(columns: list) -> str:
+    parts = []
+    for col in columns:
+        w = col.get("width", 20)
+        label = col["label"]
+        parts.append(f"{label:<{w}}" if w else label)
+    return "  ".join(parts)
+
+
+def _build_row(columns: list, session: dict, index: int = 0) -> str:
+    parts = []
+    for col in columns:
+        w = col.get("width", 20)
+        val = _format_value(session, col["field"], index=index)
+        if w == 0:
+            parts.append(val)
+        else:
+            parts.append(f"{val[:w]:<{w}}")
+    return "  ".join(parts)
+
+
+# ── Slash command handler ────────────────────────────────────────────
+
+def _handle_sl(raw_args: str) -> Optional[str]:
+    """Handle /sl [limit] — show recent sessions with custom columns."""
+    import yaml
+
+    config_path = _hermes_home() / "session_list_config.yaml"
+
+    # Load column config
+    try:
+        if config_path.exists():
+            cfg = yaml.safe_load(config_path.read_text())
+            columns = cfg.get("columns", [])
+        else:
+            columns = []
+    except Exception:
+        columns = []
+
+    if not columns:
+        columns = [
+            {"field": "#", "width": 3, "label": "#"},
+            {"field": "title", "width": 32, "label": "Title"},
+            {"field": "preview", "width": 40, "label": "Preview"},
+            {"field": "last_active", "width": 13, "label": "Last Active"},
+            {"field": "id", "width": 0, "label": "ID"},
+        ]
+
+    # Parse limit from args
+    limit = 20
+    args = raw_args.strip().split()
+    if args:
+        try:
+            limit = int(args[0])
+        except ValueError:
+            pass
+
+    # Query sessions
+    from hermes_state import SessionDB
+    db = SessionDB()
+    sessions = db.list_sessions_rich(exclude_sources=["tool"], limit=limit)
+
+    if not sessions:
+        return "(._.) No previous sessions yet."
+
+    # Render
+    header = _build_header(columns)
+    sep = "─" * len(header)
+    lines = [header, sep]
+    for idx, s in enumerate(sessions, start=1):
+        lines.append(_build_row(columns, s, index=idx))
+
+    # Add hint for /resume
+    lines.append("")
+    lines.append("Use /resume <#> to continue a session. Example: /resume 2")
+
+    return "\n".join(lines)
+
+
+# ── Plugin registration ──────────────────────────────────────────────
+
+def register(ctx) -> None:
+    ctx.register_command(
+        "sl",
+        handler=_handle_sl,
+        description="List recent sessions with custom columns (config: ~/.hermes/session_list_config.yaml)",
+        args_hint="[limit]",
+    )

plugin.yaml

@@ -0,0 +1,5 @@
+name: session-list
+version: 1.0.0
+description: "Custom session list slash command (/sl) with configurable columns from session_list_config.yaml."
+author: "git_alhan"
+kind: standalone

session_list_config.example.yaml

@@ -0,0 +1,22 @@
+# Copy this to ~/.hermes/session_list_config.yaml and customize.
+#
+# Available fields:
+#   # (row index), id, source, model, title, started_at, ended_at,
+#   message_count, preview, last_active, input_tokens, output_tokens,
+#   total_tokens, net_input, net_total, cache_read_tokens,
+#   cache_write_tokens, reasoning_tokens
+#
+# width: column width in chars (0 = free-form, only for last column)
+#
+# NOTE: input_tokens = cache miss (Hermes already deducts cache hits).
+#       net_input = max(0, input - cache) — would double-deduct.
+
+columns:
+  - {field: "#", width: 3, label: "#"}
+  - {field: title, width: 42, label: Title}
+  - {field: message_count, width: 5, label: Msgs}
+  - {field: cache_read_tokens, width: 7, label: hit}
+  - {field: input_tokens, width: 7, label: miss}
+  - {field: output_tokens, width: 7, label: out}
+  - {field: source, width: 4, label: Src}
+  - {field: last_active, width: 11, label: Active}