story-kit: accept 153_bug_auto_assign_broken_after_stage_field_was_added_to_agent_config

.story_kit/work/5_archived/153_bug_auto_assign_broken_after_stage_field_was_added_to_agent_config.md

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+---
+name: "Auto-assign broken after stage field was added to agent config"
+---
+
+# Bug 153: Auto-assign broken after stage field was added to agent config
+
+## Description
+
+Bug 150 changed agent pipeline role detection from name-based matching (pipeline_stage function) to a stage field in project.toml. The auto_assign_available_work function in server/src/agents.rs (line 1212) uses find_free_agent_for_stage (line 1728) to match agents to pipeline stages. After the stage field change, auto-assign stopped working — free coders are not picked up for items in 2_current/.
+
+Likely causes:
+- find_free_agent_for_stage still calls the old pipeline_stage() by name instead of reading the config stage field
+- Or the PipelineStage enum comparison is failing due to a mismatch between config values and enum variants
+- Or auto_assign_available_work is not being triggered after agent completion
+
+Key files:
+- server/src/agents.rs line 1212: auto_assign_available_work
+- server/src/agents.rs line 1728: find_free_agent_for_stage
+- server/src/config.rs: agent config with new stage field
+- .story_kit/project.toml: stage values on each agent
+
+## How to Reproduce
+
+1. Have items in 2_current/ with free coders available
+2. Wait for auto_assign_available_work to trigger
+3. Free coders are not assigned to waiting items
+
+## Actual Result
+
+Free coders sit idle while items wait in current. Manual start_agent works fine.
+
+## Expected Result
+
+auto_assign_available_work should detect free coders and assign them to waiting items, using the new stage field from project.toml.
+
+## Acceptance Criteria
+
+- [ ] Bug is fixed and verified