docs(plugins): rename disk-guardian to disk-cleanup + bundled-plugins docs

The original name was cute but non-obvious; disk-cleanup says what it
does. Plugin directory, script, state path, log lines, slash command,
and test module all renamed. No user-visible state exists yet, so no
migration path is needed.

New website page "Built-in Plugins" documents the <repo>/plugins/<name>/
source, how discovery interacts with user/project plugins, the
HERMES_DISABLE_BUNDLED_PLUGINS escape hatch, disk-cleanup's hook
behaviour and deletion rules, and guidance on when a plugin belongs
bundled vs. user-installable. Added to the Features → Core sidebar next
to the main Plugins page, with a cross-reference from plugins.md.

plugins/disk-cleanup/README.md

@@ -1,4 +1,4 @@
-# disk-guardian
+# disk-cleanup
 
 Auto-tracks and cleans up ephemeral files created during Hermes Agent
 sessions — test scripts, temp outputs, cron logs, stale chrome profiles.
@@ -31,19 +31,19 @@ Deletion rules (same as the original PR):
 ## Slash command
 
 ```
-/disk-guardian status                     # breakdown + top-10 largest
-/disk-guardian dry-run                    # preview without deleting
-/disk-guardian quick                      # run safe cleanup now
-/disk-guardian deep                       # quick + list items needing prompt
-/disk-guardian track <path> <category>    # manual tracking
-/disk-guardian forget <path>              # stop tracking
+/disk-cleanup status                     # breakdown + top-10 largest
+/disk-cleanup dry-run                    # preview without deleting
+/disk-cleanup quick                      # run safe cleanup now
+/disk-cleanup deep                       # quick + list items needing prompt
+/disk-cleanup track <path> <category>    # manual tracking
+/disk-cleanup forget <path>              # stop tracking
 ```
 
 ## Safety
 
 - `is_safe_path()` rejects anything outside `HERMES_HOME` or `/tmp/hermes-*`
 - Windows mounts (`/mnt/c` etc.) are rejected
-- The state directory `$HERMES_HOME/disk-guardian/` is itself excluded
+- The state directory `$HERMES_HOME/disk-cleanup/` is itself excluded
 - `$HERMES_HOME/logs/`, `memories/`, `sessions/`, `skills/`, `plugins/`,
   and config files are never tracked
 - Backup/restore is scoped to `tracked.json` — the plugin never touches

plugins/disk-cleanup/__init__.py

@@ -1,4 +1,4 @@
-"""disk-guardian plugin — auto-cleanup of ephemeral Hermes session files.
+"""disk-cleanup plugin — auto-cleanup of ephemeral Hermes session files.
 
 Wires three behaviours:
 
@@ -8,10 +8,10 @@ Wires three behaviours:
    compliance required.
 
 2. ``on_session_end`` hook — when any test files were auto-tracked
-   during the just-finished turn, runs :func:`disk_guardian.quick` and
-   logs a single line to ``$HERMES_HOME/disk-guardian/cleanup.log``.
+   during the just-finished turn, runs :func:`disk_cleanup.quick` and
+   logs a single line to ``$HERMES_HOME/disk-cleanup/cleanup.log``.
 
-3. ``/disk-guardian`` slash command — manual ``status``, ``dry-run``,
+3. ``/disk-cleanup`` slash command — manual ``status``, ``dry-run``,
    ``quick``, ``deep``, ``track``, ``forget``.
 
 Replaces PR #12212's skill-plus-script design: the agent no longer
@@ -27,7 +27,7 @@ import threading
 from pathlib import Path
 from typing import Any, Dict, Optional, Set
 
-from . import disk_guardian as dg
+from . import disk_cleanup as dg
 
 logger = logging.getLogger(__name__)
 
@@ -178,7 +178,7 @@ def _on_session_end(
     try:
         summary = dg.quick()
     except Exception as exc:
-        logger.debug("disk-guardian quick cleanup failed: %s", exc)
+        logger.debug("disk-cleanup quick cleanup failed: %s", exc)
         return
 
     if summary["deleted"] or summary["empty_dirs"]:
@@ -193,7 +193,7 @@ def _on_session_end(
 # ---------------------------------------------------------------------------
 
 _HELP_TEXT = """\
-/disk-guardian — ephemeral-file cleanup
+/disk-cleanup — ephemeral-file cleanup
 
 Subcommands:
   status                     Per-category breakdown + top-10 largest
@@ -212,7 +212,7 @@ Test files are auto-tracked on write_file / terminal and auto-cleaned at session
 
 def _fmt_summary(summary: Dict[str, Any]) -> str:
     base = (
-        f"[disk-guardian] Cleaned {summary['deleted']} files + "
+        f"[disk-cleanup] Cleaned {summary['deleted']} files + "
         f"{summary['empty_dirs']} empty dirs, freed {dg.fmt_size(summary['freed'])}."
     )
     if summary.get("errors"):
@@ -268,14 +268,14 @@ def _handle_slash(raw_args: str) -> Optional[str]:
             for item in prompt_items:
                 lines.append(f"  [{item['category']}] {item['path']}")
             lines.append(
-                "\nRun `/disk-guardian forget <path>` to skip, or delete "
+                "\nRun `/disk-cleanup forget <path>` to skip, or delete "
                 "manually via terminal."
             )
         return "\n".join(lines)
 
     if sub == "track":
         if len(argv) < 3:
-            return "Usage: /disk-guardian track <path> <category>"
+            return "Usage: /disk-cleanup track <path> <category>"
         path_arg = argv[1]
         category = argv[2]
         if category not in dg.ALLOWED_CATEGORIES:
@@ -292,7 +292,7 @@ def _handle_slash(raw_args: str) -> Optional[str]:
 
     if sub == "forget":
         if len(argv) < 2:
-            return "Usage: /disk-guardian forget <path>"
+            return "Usage: /disk-cleanup forget <path>"
         n = dg.forget(argv[1])
         return (
             f"Removed {n} tracking entr{'y' if n == 1 else 'ies'} for {argv[1]}."
@@ -310,7 +310,7 @@ def register(ctx) -> None:
     ctx.register_hook("post_tool_call", _on_post_tool_call)
     ctx.register_hook("on_session_end", _on_session_end)
     ctx.register_command(
-        "disk-guardian",
+        "disk-cleanup",
         handler=_handle_slash,
         description="Track and clean up ephemeral Hermes session files.",
     )

plugins/disk-cleanup/disk_cleanup.py

@@ -1,4 +1,4 @@
-"""disk_guardian — ephemeral file cleanup for Hermes Agent.
+"""disk_cleanup — ephemeral file cleanup for Hermes Agent.
 
 Library module wrapping the deterministic cleanup rules written by
 @LVT382009 in PR #12212. The plugin ``__init__.py`` wires these
@@ -47,7 +47,7 @@ logger = logging.getLogger(__name__)
 
 def get_state_dir() -> Path:
     """State dir — separate from ``$HERMES_HOME/logs/``."""
-    return get_hermes_home() / "disk-guardian"
+    return get_hermes_home() / "disk-cleanup"
 
 
 def get_tracked_file() -> Path:
@@ -297,7 +297,7 @@ def quick() -> Dict[str, Any]:
     hermes_home = get_hermes_home()
     _PROTECTED_TOP_LEVEL = {
         "logs", "memories", "sessions", "cron", "cronjobs",
-        "cache", "skills", "plugins", "disk-guardian", "optional-skills",
+        "cache", "skills", "plugins", "disk-cleanup", "optional-skills",
         "hermes-agent", "backups", "profiles", ".worktrees",
     }
     empty_removed = 0
@@ -475,7 +475,7 @@ def guess_category(path: Path) -> Optional[str]:
         rel = path.resolve().relative_to(hermes_home)
         top = rel.parts[0] if rel.parts else ""
         if top in {
-            "disk-guardian", "logs", "memories", "sessions", "config.yaml",
+            "disk-cleanup", "logs", "memories", "sessions", "config.yaml",
             "skills", "plugins", ".env", "USER.md", "MEMORY.md", "SOUL.md",
             "auth.json", "hermes-agent",
         }:

plugins/disk-cleanup/plugin.yaml

@@ -1,4 +1,4 @@
-name: disk-guardian
+name: disk-cleanup
 version: 2.0.0
 description: "Auto-track and clean up ephemeral files (test scripts, temp outputs, cron logs) created during Hermes sessions. Runs via plugin hooks — no agent action required."
 author: "@LVT382009 (original), NousResearch (plugin port)"