site: cut the template's own labels out of the pages

Point 7 of the page-wording review. The pages no longer show their data
structure as headings, and they no longer explain their own conventions.

- Level 1 is one screen: claim, status badge, three figures, the technology
  row, and one sentence carrying one link. Measured in headless Chrome at
  1440x900: 1404-1845 px tall before, exactly 900 px (no scroll) after, on
  all six area pages.
- DocPage: no kicker line, no visible level label, no "Evidence for this
  page" heading or instruction note, no "Drill-downs" list, no
  "Status <word> - sentence" footer. The artefact table starts at level 2,
  under the heading "Artefacts"; the history timeline is level 2 only.
- Landing page: "Start here" link text gone, "How to read this site" panel
  gone, the footer's status-label explainer gone.
- Content, presentation only, no claim softened: the leading H1 that
  duplicated the page title removed from all 41 documents; level 1 bodies
  reduced to the constraint as ordinary prose plus the way in;
  "**Status: ...**" prefixes removed from the artefact stubs; "## Drill-downs"
  and "## Period and confidence" removed from the level 2 pages, with the
  cross-area links moved into the prose.
- The six level 1 claims are now sentences with a subject, and use commas
  instead of middots. Same facts, no new ones.

Not in this commit: the 35 level 2 and 3 claims still use the compact CV
style. That is a voice decision for Sam, not a wording tidy-up.

make validate: 41 documents, 0 violations. go test ./...: pass.

(cherry picked from commit 03009f80fc7815ad7719412e125df9297a6e653f)

content/edge/edge-fleet.md

@@ -14,8 +14,6 @@ last_verified: 2026-10-26
 tags: [edge, iot, esp32, lora, zigbee, audio]
 ---
 
-# Constrained devices · custom radio · and a record of what broke
-
 **Capability statement.** Devices that must run for months on a small battery, talk over radio that was chosen for range rather than convenience, and fail in ways that are visible. Twenty or more nodes, nine zones, twenty automations, and a voice layer on top of all of it.
 
 ## What is actually run
@@ -50,16 +48,4 @@ tags: [edge, iot, esp32, lora, zigbee, audio]
 - **Some things are still manual.** The garden automation is partly manual — some watering and lighting is scheduled, some is a person turning something on. The page says which is which instead of implying full coverage.
 - **The failures cost money and are kept.** A lizard destroyed a feeder built for it. The garden cameras were postponed with the parts already bought. The doorbell is being rebuilt rather than declared finished. Those are the most honest evidence of production experience on this site.
 
-## Drill-downs
-
-- [Edge architecture — power · radio · deep sleep](l3/edge-architecture.md) — level 3
-- [LoRa irrigation under solar power](l3/edge-lora-sprinkler.md) — level 3
-- [Hand-built Zigbee routers and lighting](l3/edge-zigbee.md) — level 3
-- [Distributed audio — eight endpoints with ducking](l3/edge-snapcast.md) — level 3
-- [Front door — vision · voice · and a rebuild](l3/edge-front-door.md) — level 3
-- [Sensors and actuation](l3/edge-sensors.md) — level 3
-- [The failures, kept in the record](l3/edge-failures.md) — level 3
-
-## Period and confidence
-
-`period: 2020–`, anchored on the homelab year in the evidence notes. Confidence is `running` for the fleet as a whole; individual nodes carry their own label, and the ones being rebuilt or postponed are labelled that way on their pages.
+Individual nodes carry their own label, and the ones being rebuilt or postponed are labelled that way on their pages.