[2.30.0] Add orchestrating-swarms skill, /slfg command, and swarm mode (#151)

- New skill: orchestrating-swarms — comprehensive guide to multi-agent
  swarm orchestration with TeammateTool operations, spawn backends,
  task dependencies, and orchestration patterns
- New command: /slfg — swarm-enabled variant of /lfg that parallelizes
  review + browser tests after work phase, then resolves and records video
- Updated /workflows:work with optional Swarm Mode section
- Added missing skills (brainstorming, orchestrating-swarms) to README
- Added missing commands (/lfg, /slfg) to README

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

plugins/compound-engineering/commands/slfg.md

@@ -0,0 +1,31 @@
+---
+name: slfg
+description: Full autonomous engineering workflow using swarm mode for parallel execution
+argument-hint: "[feature description]"
+---
+
+Swarm-enabled LFG. Run these steps in order, parallelizing where indicated.
+
+## Sequential Phase
+
+1. `/ralph-wiggum:ralph-loop "finish all slash commands" --completion-promise "DONE"`
+2. `/workflows:plan $ARGUMENTS`
+3. `/compound-engineering:deepen-plan`
+4. `/workflows:work` — **Use swarm mode**: Make a Task list and launch an army of agent swarm subagents to build the plan
+
+## Parallel Phase
+
+After work completes, launch steps 5 and 6 as **parallel swarm agents** (both only need code to be written):
+
+5. `/workflows:review` — spawn as background Task agent
+6. `/compound-engineering:test-browser` — spawn as background Task agent
+
+Wait for both to complete before continuing.
+
+## Finalize Phase
+
+7. `/compound-engineering:resolve_todo_parallel` — resolve any findings from the review
+8. `/compound-engineering:feature-video` — record the final walkthrough and add to PR
+9. Output `<promise>DONE</promise>` when video is in PR
+
+Start with step 1 now.