fix: fix: architect creates duplicate sprint pitch for vision issues that already have sub-issues (#486)

formulas/run-architect.toml

@@ -53,14 +53,44 @@ For each available pitch slot:
 1. From the vision issues list, skip any issue that already has an open architect PR
    (match by checking if any open architect PR body references the vision issue number)
 2. Skip any issue that already has the `in-progress` label
-3. From remaining candidates, pick the most unblocking issue first (fewest open
+3. Check for existing sub-issues filed from this vision issue (see Sub-issue existence check below)
+4. Check for merged sprint PRs referencing this vision issue (see Merged sprint PR check below)
+5. From remaining candidates, pick the most unblocking issue first (fewest open
    dependencies, or earliest created if tied)
-4. Add to ARCHITECT_TARGET_ISSUES array
+6. Add to ARCHITECT_TARGET_ISSUES array
+
+### Sub-issue existence check
+
+Before selecting a vision issue for pitching, check if it already has sub-issues:
+
+1. Search for issues whose body contains 'Decomposed from #N' where N is the vision issue number
+2. Also check for issues filed by architect-bot that reference the vision issue number
+3. If any sub-issues are open (state != 'closed'), skip this vision issue — it's already being worked on
+4. If all sub-issues are closed, the vision issue may be ready for a new sprint (next phase)
+
+API calls:
+- GET /repos/{owner}/{repo}/issues?labels=vision&state=open — fetch vision issues
+- GET /repos/{owner}/{repo}/issues — search all issues for 'Decomposed from #N' pattern
+- Check each issue's state field to determine if open or closed
+
+### Merged sprint PR check
+
+Before selecting a vision issue for pitching, check for merged architect PRs:
+
+1. Search for merged PRs on the ops repo where the body references the vision issue number
+2. Use: GET /repos/{owner}/{repo}/pulls?state=closed (then filter for merged ones)
+3. If a merged PR references the vision issue, decomposition already happened — skip this vision issue
+
+API calls:
+- GET /repos/{owner}/{repo}/pulls?state=closed — fetch closed PRs from ops repo
+- Check PR body for references to the vision issue number (e.g., "refs #N" or "#N")
 
 Skip conditions:
 - If no vision issues are found, signal PHASE:done
 - If pitch_budget <= 0 (already 3 open architect PRs), skip pitching — only handle existing PRs
 - If all vision issues already have open architect PRs, signal PHASE:done
+- If all vision issues have open sub-issues, skip pitching — decomposition already in progress
+- If all vision issues have merged sprint PRs, skip pitching — decomposition already completed
 
 Output:
 - Sets ARCHITECT_TARGET_ISSUES as a JSON array of issue numbers to pitch (up to 3)