Haiku Orchestrator Handoff

Mechanical session handoff for Haiku models. Preserves context without judgment calls. For full handoff protocol with learnings processing, use /handoff skill (Sonnet/Opus).

Target Model: Haiku (mechanical preservation)

Protocol

When invoked, update session.md mechanically:

1. Review Conversation

• Identify completed tasks (with commit hashes/file refs)
• Identify pending/remaining tasks
• Note any blockers or gotchas

2. Update session.md

Merge rules — read current session.md first, then apply:

• REPLACE these sections with fresh content: "Completed This Session", "Next Steps"
• MERGE these sections (carry forward unresolved items + add new): "In-tree Tasks", "Worktree Tasks", "Blockers / Gotchas"
• ADD "Session Notes" section if new observations to record
• PRESERVE UNCHANGED all other existing sections (especially "Recent Learnings", "Reference Files", any "Prior Session" content)

How to apply:

1. Read current session.md
2. Update header (date, status line)
3. Replace sections listed under REPLACE with fresh content
4. For MERGE sections: preserve unresolved items from previous session, add new items, mark completed items with [x]
5. Add Session Notes section if new observations exist
6. Keep everything else exactly as-is

MERGE semantics for In-tree Tasks and Worktree Tasks:

• Review all tasks from previous session.md in both sections
• Keep all unresolved tasks (mark with [ ] or carry forward as-is)
• Add new tasks to the appropriate section (In-tree or Worktree)
• Mark completed tasks with [x] if they were completed in current session

Task metadata format: Follow the format defined in execute-rule.md (always loaded). Preserve metadata format verbatim when carrying forward unresolved items.

MERGE semantics for Blockers / Gotchas:

• Review all blockers/gotchas from previous session.md
• Keep items that are still relevant (unresolved blockers, active gotchas)
• Add new blockers/gotchas discovered in current session
• Drop items that were resolved in current session (document resolution in Completed or Session Notes if significant)

Template for sections being replaced/added:

Completed This Session

[Bullet list of completed work with commit hashes/file refs]

In-tree Tasks

[Bullet list with checkboxes]

Worktree Tasks

[Bullet list with checkboxes]

Session Notes

[Raw observations, discoveries, issues encountered - NO FILTERING]
[Preserve verbatim what happened, let standard model judge later]

Blockers / Gotchas

[Any blockers or warnings for next agent]

Next Steps

[Immediate next action]

CRITICAL: Do NOT delete existing sections not shown above. session.md may contain
sections from prior handoffs (Recent Learnings, Reference Files, etc.) that MUST be preserved.

3. Report Completion

Report line count: "Session handoff complete. [X] lines."

Key Differences from Full Handoff

• "Session Notes" not "Recent Learnings" — no judgment about learnings, dump raw observations
• No learnings staging — do not call add-learning.py
• No size advice — report completion with line count only
• Preserve everything mechanically — commit hashes, file paths, line numbers, metrics. Do not filter or judge importance