fix: resolve first-run workflow failures (2.35.0)

- fix(lfg, slfg): make ralph-loop step optional — graceful fallback
  when ralph-wiggum skill not installed (#154); add explicit
  "do not stop" instruction across all pipeline steps (#134)
- fix(plan): add mandatory "Write Plan File" step with explicit Write
  tool instructions before post-generation options — plan always
  written to disk even in LFG/SLFG pipeline context (#155, #134)
- fix(plan): use full qualified agent name for spec-flow-analyzer
  to prevent Claude prepending wrong 'workflows:' prefix (#193)

Closes #154, #155, #193
Contributing to #134

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

plugins/compound-engineering/commands/lfg.md

@@ -5,9 +5,9 @@ argument-hint: "[feature description]"
 disable-model-invocation: true
 ---
 
-Run these slash commands in order. Do not do anything else.
+Run these slash commands in order. Do not do anything else. Do not stop between steps — complete every step through to the end.
 
-1. `/ralph-wiggum:ralph-loop "finish all slash commands" --completion-promise "DONE"`
+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. `/workflows:plan $ARGUMENTS`
 3. `/compound-engineering:deepen-plan`
 4. `/workflows:work`
@@ -17,4 +17,4 @@ Run these slash commands in order. Do not do anything else.
 8. `/compound-engineering:feature-video`
 9. Output `<promise>DONE</promise>` when video is in PR
 
-Start with step 1 now.
+Start with step 2 now (or step 1 if ralph-wiggum is available).