feat(delegate-job): bump default --timeout 600s -> 3600s (1h wall-clock budget)

Changed 11 locations across 5 files:
- scripts/registry.py: timeout_sec dataclass default + argparse default
- scripts/job_subscriber.py: help text + fallback default
- SKILL.md: 4 recommended invocation examples
- registry.md: JSON example + CLI example
- tmux-agent-orchestrate-delegate-job: bash wrapper TIMEOUT var

--idle-timeout 120s preserved unchanged.
Rationale: 10min default was too short for deep analysis / multi-file
generation tasks; 1h aligns with long-running agent delegation patterns.

skills/tmux-agent-orchestrate-delegate-job/scripts/registry.py

@@ -52,7 +52,7 @@ def register_job(
     agent: str = "claude-code",
     agent_session: str = "tmux:claude",
     broker: Optional[Dict[str, Any]] = None,
-    timeout_sec: int = 600,
+    timeout_sec: int = 3600,
     idle_timeout_sec: int = 120,
     registry_dir: str = DEFAULT_REGISTRY_DIR,
     job_id: Optional[str] = None,
@@ -187,7 +187,7 @@ def _build_parser() -> argparse.ArgumentParser:
     p_reg.add_argument("--prompt", required=True)
     p_reg.add_argument("--agent", default="claude-code")
     p_reg.add_argument("--agent-session", default="tmux:claude")
-    p_reg.add_argument("--timeout", type=int, default=600)
+    p_reg.add_argument("--timeout", type=int, default=3600)
     p_reg.add_argument("--idle-timeout", type=int, default=120)
     p_reg.add_argument("--bits", type=int, default=32, help="32 (PoC) or 128 (prod)")
     p_reg.add_argument("--artifact", action="append", default=[], dest="artifacts")