chore: run live-sync heartbeat hourly

Operator decision at review: 15 min is aggressive for config churn; hourly
keeps the stale-window acceptable (<=1 h) with a fifth of the wakeups.
Timer unit, tier law, and failure-table wording aligned.

AGENTS.md

@@ -74,7 +74,7 @@ desktop GUIs. "Dirty tree" is judged by the writer:
 | Machine live | `agent/memories/`, `agent/managed-skills/`, `agent/config.yml`, `agent/models.yml` | `scripts/live-sync.sh` heartbeat |
 | Desktop live | `dotfiles/` | same heartbeat |
 
-The heartbeat (systemd user timer, ~15 min) stages ONLY allowlisted tiers,
+The heartbeat (systemd user timer, hourly) stages ONLY allowlisted tiers,
 commits with hooks armed — the secret gate included — merges `origin/main`,
 pushes, and reaps `wt/*` worktrees older than 7 days. Non-allowlist dirt is
 never committed, only surfaced. Conflicts abort and alert (ntfy); it never

dotfiles/systemd-user/.config/systemd/user/live-sync.timer

@@ -1,9 +1,9 @@
 [Unit]
-Description=command-center live-sync heartbeat every 15 minutes
+Description=command-center live-sync heartbeat every hour
 
 [Timer]
 OnBootSec=5min
-OnUnitActiveSec=15min
+OnUnitActiveSec=1h
 RandomizedDelaySec=3min
 Persistent=true
 

omp-docs/tools/live-sync.md

@@ -70,7 +70,6 @@ journalctl --user -u live-sync.service -n 20    # observe
 | Event | Result |
 |-------|--------|
 | Harness mid-write | commits a valid snapshot; remainder lands next heartbeat |
-| Gitea down | commit safe locally; push retries next tick (≤15 min stale window) |
-| Same file edited on two boxes | real merge conflict → ntfy → human resolves (visible, not silent) |
+| Gitea down | commit safe locally; push retries next tick (≤1 h stale window) |
 | Feature branch checked out in main checkout | refuses + alerts; protects the never-end-off-main rule |
 | Secret shape in machine-written content | hook blocks, changes stay staged, alert |