openspec: scan-flow change — proposal, design, 5 specs (3 new + 2 deltas), tasks

openspec/changes/scan-flow/specs/database/spec.md

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+## ADDED Requirements
+
+### Requirement: sms_enabled column
+The `tags` table SHALL include an `sms_enabled` boolean column, NOT NULL with default TRUE. The schema SHALL add it idempotently so existing databases migrate cleanly.
+
+#### Scenario: Fresh database
+- **WHEN** `db/schema.sql` is applied to an empty database
+- **THEN** `tags.sms_enabled` exists, defaulting to TRUE
+
+#### Scenario: Existing database
+- **WHEN** `db/schema.sql` is re-applied to a database created before this column existed
+- **THEN** the column is added without error and existing rows default to TRUE