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/SKILL.md

@@ -78,7 +78,7 @@ tmux-agent-orchestrate-delegate-job submit \
   --prompt "정렬 문제 10개를 만들어 sort_problems.md로 저장" \
   --workdir /path/to/project \
   --agent-session tmux:demo \
-  --timeout 600 --idle-timeout 120
+  --timeout 3600 --idle-timeout 120
 # → stdout: registered job: <JID>
 #          subscriber pid: …
 #          agent launched in tmux session: demo
@@ -107,10 +107,10 @@ SKILL=./skills/tmux-agent-orchestrate-delegate-job/scripts
 # 1) register
 JID=$($PY "$SKILL/registry.py" register \
         --prompt "…" --agent claude-code --agent-session tmux:demo \
-        --timeout 600 --idle-timeout 120)
+        --timeout 3600 --idle-timeout 120)
 
 # 2) START THE SUBSCRIBER FIRST (MQTT does not queue non-retained msgs)
-$PY "$SKILL/job_subscriber.py" --job "$JID" --timeout 600 --idle-timeout 120 &
+$PY "$SKILL/job_subscriber.py" --job "$JID" --timeout 3600 --idle-timeout 120 &
 
 # 3) pass JID to the agent and instruct it to publish events with --job "$JID"
 #    (don't hard-code a job id you saw earlier — see Pitfall §"Wrong job_id")
@@ -267,7 +267,7 @@ subscribe-first + run-agent + validate:
 ```bash
 tmux-agent-orchestrate-delegate-job submit  --agent claude-code \
    --prompt "정렬 문제 10개를 만들어 sort_problems.md로 저장" \
-   --workdir /path/to/project --timeout 600 [--validate ./validate.sh]
+    --workdir /path/to/project --timeout 3600 [--validate ./validate.sh]
 tmux-agent-orchestrate-delegate-job status  --job <id>          # one record, pretty-printed
 tmux-agent-orchestrate-delegate-job list                        # all jobs, one line each
 tmux-agent-orchestrate-delegate-job verify  --job <id> --validate ./validate.sh   # runs it, reports exit code