release: 1.8.0: Built-in operator help drawer and /help page

Built-in operator documentation in the panel: a CSS-only help drawer and Help page so Status checks and domain controls are explained without leaving the panel.
Added:
  - **Help** navigation entry and `/help` index page.
  - CSS-checkbox help drawer (no extra script): seeded topics for Status (Machine,
  - «?» entry points on Status and domain card heads open the matching drawer
Changed:
  - [guide.md](docs/guide.md) documents the boundary: in-panel help for card

Full detail: CHANGELOG.md (1.8.0).

docs/guide.md

@@ -311,6 +311,18 @@ Schedule `extract-cert.sh` (cron or a timer) alongside Traefik's renewals.
 After sign-in the panel opens on **Status** — the place to answer "is the
 service healthy and will mail be accepted?"
 
+### In-panel help
+
+The panel carries short operator notes so day-to-day work does not require
+opening this guide. **Help** in the navigation opens an index; each Status or
+domain card's «?» opens the same text in a side drawer (CSS only, no extra
+script). That content explains what a check or control *means* — kernel
+counters, TLS on port 465, forward-confirmed PTR, DNS publish hints, rate
+limits, and similar. It is not a second copy of this document: installation,
+reverse-proxy setup, backup/restore, environment variables, and security
+assumptions stay here in `docs/guide.md` (linked from the drawer and Help
+page).
+
 ### Status
 
 `/status` shows supervised processes (Postfix, OpenDKIM, panel), TLS

docs/plans/panel-docs.md

@@ -1,6 +1,6 @@
 # Plan: panel-docs (in-panel operator documentation)
 
-**Status:** candidate  
+**Status:** agreed  
 **Date:** 2026-08-17  
 **Version:** `1.x` MINOR; `candidate` until explicitly agreed.
 
@@ -46,9 +46,9 @@ Target version cut: **`1.8.0`** (MINOR). One commit per step; code only after
 roadmap status is **agreed**. See [development.md](../development.md) § Plan
 checklists.
 
-- [ ] Help drawer / pages shell (CSS checkbox pattern from mockups) — **Sonnet**
-- [ ] Seed Status blurbs (Machine, TLS, PTR, …) — **Sonnet**
-- [ ] «?» entry points on domain cards — **Sonnet**
-- [ ] [guide.md](../guide.md) boundary: in-panel help vs full guide — **Sonnet**
-- [ ] Template tests — **Sonnet**
-- [ ] `go vet`, `go test` on touched packages — **Haiku**
+- [x] Help drawer / pages shell (CSS checkbox pattern from mockups) — **Sonnet**
+- [x] Seed Status blurbs (Machine, TLS, PTR, …) — **Sonnet**
+- [x] «?» entry points on domain cards — **Sonnet**
+- [x] [guide.md](../guide.md) boundary: in-panel help vs full guide — **Sonnet**
+- [x] Template tests — **Sonnet**
+- [x] `go vet`, `go test` on touched packages — **Haiku**

docs/roadmap.md

@@ -29,7 +29,7 @@ in `git log` and [CHANGELOG.md](../CHANGELOG.md).
 | ID | Topic | Status | Progress | Plan |
 |---|---|---|---|---|
 | contributing | `CONTRIBUTING.md` | candidate | — | — |
-| panel-docs | In-panel operator documentation | candidate | 0/6 | [plans/panel-docs.md](plans/panel-docs.md) |
+| panel-docs | In-panel operator documentation | agreed | 6/6 | [plans/panel-docs.md](plans/panel-docs.md) |
 | schema-squash | Squash SQLite migrations into a 2.x baseline | **2.x** | — | — |
 
 **Recommended order** (not binding): the next feature is **panel-docs** once