docs: retire the agent hierarchy from every page that described it

The topology doc keeps its filename and its second half (manager
special-casing, harness unit shape) — both are cross-referenced from
other pages and neither is about the parent field. Its first half is
rewritten: what topology.json is now, and a table of what the removal
took with it, so a reader who finds `<parent>` or `set-parent` in an old
issue thread learns it went away rather than moved.

The dashboard's tree-rendering section is marked dormant rather than
deleted: the walk is still in swarm.js and retiring it is the frontend
owner's call.
This commit is contained in:
atlas 2026-09-21 21:18:08 +02:00 committed by atlas
commit 179f873722
17 changed files with 186 additions and 262 deletions

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@ -270,7 +270,7 @@ See [`approvals.md`](../agent-lifecycle/approvals.md) for the full flow.
### 8 · Useful host commands
```bash
# Roster: all agents, status, rev, parent, pending reminders
# Roster: all agents, status, rev, pending reminders
hivectl list-agents
# Restart a stuck container (no rebuild)