huskies: create 497_bug_dependency_promotion_loop_missing_stories_with_met_deps_never_move_from_backlog_to_current

.huskies/work/1_backlog/497_bug_dependency_promotion_loop_missing_stories_with_met_deps_never_move_from_backlog_to_current.md

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+---
+name: "Dependency promotion loop missing — stories with met deps never move from backlog to current"
+---
+
+# Bug 497: Dependency promotion loop missing — stories with met deps never move from backlog to current
+
+## Description
+
+Story 484 implemented dependency checking in auto-assign (skip stories with unmet deps) but did NOT implement the backlog-to-current promotion loop. Stories with `depends_on` that have all deps met sit in backlog forever — nothing moves them to current.
+
+The AC for 484 specified: "A dependency check loop (similar to the timer tick loop) periodically scans backlog for stories whose depends_on stories have all reached done or archived. When all deps are met, the loop moves the story from backlog to current."
+
+This loop was never built. Need a periodic tick (like the timer tick) that scans backlog, checks `depends_on` against done/archived, and promotes ready stories to current.
+
+## How to Reproduce
+
+1. Create story A with no deps, create story B with `depends_on: [A]`
+2. Both in backlog
+3. Move A to current, let it complete through to done
+4. Observe B stays in backlog forever
+
+## Actual Result
+
+Story B stays in backlog despite all deps being met.
+
+## Expected Result
+
+Story B is automatically promoted from backlog to current once story A reaches done.
+
+## Acceptance Criteria
+
+- [ ] Bug is fixed and verified