docs: remove hyphens from auto-X compounds per Microsoft.Auto style

Fixed 72 hyphenated 'auto-X' compounds across the docs by deleting
the hyphen to match Microsoft style guide (autogenerated, autoregistration,
autodiscovery, etc). Preserved original capitalization throughout.

Covered 26 documentation files in docs/, including README.md, agent-lifecycle,
integrations, scheduler, networking, process, tools, trust-boundary,
turn-loop, and web-ui sections.

docs/tools/hivectl.md

@@ -15,7 +15,7 @@ forge + matrix accounts, gateway htpasswd management, container
 lifecycle shortcuts, and interactive agent shell access.
 
 This page is the curated guide. For the exhaustive flag-by-flag
-reference auto-generated from the binary's own command tree, see
+reference autogenerated from the binary's own command tree, see
 [`hivectl-cli.md`](hivectl-cli.md) — emitted by the hidden `hivectl
 markdown-docs` subcommand and kept in lockstep with the code by the
 `hivectl-docs` flake check (CI fails if the committed copy drifts).
@@ -50,7 +50,7 @@ hivectl forge reconcile-config iris --verbose      # include the full diff, not
 - `reconcile-config <agent>` shows the divergence between the agent's local
   applied config checkout and its forge `agent-configs/<agent>` `main`, then
   reconciles. `--from forge` resets the local checkout to forge `main` (takes
-  effect on the next deploy — it doesn't auto-rebuild). `--from local` isn't
+  effect on the next deploy — it doesn't autorebuild). `--from local` isn't
   supported yet (forge `main` is core-only branch-protected; resolve via a
   config PR). With no `--from` it prompts for the direction after the diff.