-- Migration 003: Performance and Orphan Detection Indexes
-- Adds indexes for efficient orphan detection queries

-- Index for orphan detection: find issues/discussions not seen recently
-- Used by cleanup routines to identify potentially stale data
CREATE INDEX IF NOT EXISTS idx_issues_last_seen ON issues(last_seen_at);
CREATE INDEX IF NOT EXISTS idx_discussions_last_seen ON discussions(last_seen_at);
CREATE INDEX IF NOT EXISTS idx_notes_last_seen ON notes(last_seen_at);

-- Update schema version
INSERT INTO schema_version (version, applied_at, description)
VALUES (3, strftime('%s', 'now') * 1000, 'Performance and orphan detection indexes');