refactor(skills): migrate commands to skills directory structure

Move all 27 command .md files from commands/ to skills/*/SKILL.md
format. Claude Code 2.1.3+ merged commands and skills - both create
slash commands and work identically. Skills add optional features
like supporting files and automatic context loading.

- commands/ce/*.md -> skills/ce-*/SKILL.md
- commands/workflows/*.md -> skills/workflows-*/SKILL.md
- commands/*.md -> skills/*/SKILL.md
- Update plugin.json and marketplace.json descriptions
- Update CLAUDE.md directory structure docs
- Update deploy-docs and generate_command references

Fixes #116

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plugins/compound-engineering/skills/slfg/SKILL.md

@@ -0,0 +1,32 @@
+---
+name: slfg
+description: Full autonomous engineering workflow using swarm mode for parallel execution
+argument-hint: "[feature description]"
+disable-model-invocation: true
+---
+
+Swarm-enabled LFG. Run these steps in order, parallelizing where indicated. Do not stop between steps — complete every step through to the end.
+
+## Sequential Phase
+
+1. **Optional:** If the `ralph-wiggum` skill is available, run `/ralph-wiggum:ralph-loop "finish all slash commands" --completion-promise "DONE"`. If not available or it fails, skip and continue to step 2 immediately.
+2. `/ce:plan $ARGUMENTS`
+3. `/compound-engineering:deepen-plan`
+4. `/ce: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. `/ce: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.