cleanup: reflect Go rewrite reality — remove legacy Python artifacts

Removed:
- bin/hermes (9.3MB compiled binary accidentally committed to git)
- oikos/console/ (Flask web console — replaced by Go REST API + SSE)
- mcp/server.py (Python MCP server — replaced by internal/mcp/)
- oikos/policy.yaml, oikos/ontology.yaml (duplicates of seeds/)

Kept:
- oikos/*.py kernel files (12 files) — still imported by bin/homelab
  for operational CLI commands (ssh, pct, logs, restart, status,
  open, secret, client, sync, mcp). Will be removed when bin/homelab
  is ported to Go.
- mcp/build_host_files.py — generates hosts/*.yaml from inventory,
  still operational. Will be ported to Go.
- bin/homelab — active Python CLI, still operational.

Updated:
- .gitignore: added bin/hermes, cleaned up legacy comments
- plans/index.md: listed all 4 active plans with accurate statuses

plans/index.md

@@ -8,7 +8,10 @@ went sideways, open an investigation.
 
 | Date | Title | Status |
 | ---- | ----- | ------ |
-| 2026-06-24 | [TRMNL plugins LXC (128) + middleware deploy pipeline](2026-06-24-trmnl-plugins-lxc.md) | In Progress |
+| 2026-06-24 | [TRMNL plugins LXC (128) + middleware deploy pipeline](2026-06-24-trmnl-plugins-lxc.md) | Planned |
+| 2026-07-05 | [Oikos Prometheus LXC](2026-07-05-oikos-prometheus-lxc.md) | Planned |
+| 2026-07-06 | [Adopt wiki-hq doc architecture](2026-07-06-adopt-wiki-hq-doc-architecture.md) | In Progress |
+| 2026-07-06 | [Consolidate Oikos control plane onto mac-mini](2026-07-06-consolidate-oikos-control-plane-onto-mac-mini.md) | In Progress (Phase 1-6 implemented, pending cutover) |
 
 ## Done
 
@@ -26,4 +29,4 @@ See [`done/`](done/) for executed plans:
 - File name: `YYYY-MM-DD-<slug>.md`. Use the *target* date if known, otherwise the planning date.
 - Status: `Planned` → `In Progress` → `Done` (move to `done/` on completion).
 - When done: add a changelog entry on every affected node page, then move the file to `done/`.
-- Plans are append-only once execution starts — don't rewrite pre-flight intent after the fact.
+- Plans are append-only once execution starts — don't rewrite pre-flight intent after the fact.