Add task branching feature (#15)

1 files changed, 10 insertions, 0 deletions

diff --git a/makima/migrations/20250121000000_add_branched_from.sql b/makima/migrations/20250121000000_add_branched_from.sql
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index 0000000..bbb395b
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+++ b/makima/migrations/20250121000000_add_branched_from.sql
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+-- Add branched_from_task_id column to tasks table for task branching support.
+-- This allows creating new tasks that branch from an existing task's conversation,
+-- enabling "what if" exploration of different approaches from the same starting point.
+
+ALTER TABLE tasks
+ADD COLUMN IF NOT EXISTS branched_from_task_id UUID REFERENCES tasks(id) ON DELETE SET NULL;
+
+CREATE INDEX IF NOT EXISTS idx_tasks_branched_from ON tasks(branched_from_task_id);
+
+COMMENT ON COLUMN tasks.branched_from_task_id IS 'Source task ID when this task was branched from another task conversation';