## Compaction Handoff
The conversation above this point has been compacted. Below is a structured summary of what was discussed and decided. Read this first — it replaces re-reading the compressed transcript.
### Goal
[The user's high-level objective for this session]
### Constraints
[What's off-limits, what bounds the work, what the user explicitly does NOT want changed]
### Progress
#### Done
[What's complete and verified — landed commits, passing tests, shipped patches]
#### In Progress
[What's mid-flight — partial implementations, open PRs, work-in-tree]
#### Blocked
[What's stuck, why, and what would unblock it]
### Key Decisions
[Architectural choices, design decisions, trade-offs made — the WHY behind the work]
### Next step
[The single next action to take when resuming — one line, concrete]