Remove backwards compat code: no installed base pre-1.0

- Simplify bootstrapMigrationsTable to just check table existence and
  apply 000.sql if missing — no legacy DB detection
- Remove ensureBootstrapVersionRecorded (legacy backfill path)
- Remove applyBootstrapMigration (separate helper, now inlined)
- Remove TestBootstrapMigrationsTable_ExistingTableBackwardsCompat
- Simplify 000.sql header comment

internal/database/database.go

@@ -148,9 +148,7 @@ func collectMigrations() ([]string, error) {
 }
 
 // bootstrapMigrationsTable ensures the schema_migrations table exists
-// by applying 000.sql directly. For databases that already have the
+// by applying 000.sql if the table is missing.
-// table (created by older code), it records version "000" for
-// consistency.
 func bootstrapMigrationsTable(ctx context.Context, db *sql.DB, log *slog.Logger) error {
 	var tableExists int
 
@@ -162,47 +160,9 @@ func bootstrapMigrationsTable(ctx context.Context, db *sql.DB, log *slog.Logger)
 	}
 
 	if tableExists > 0 {
-		return ensureBootstrapVersionRecorded(ctx, db, log)
-	}
-
-	return applyBootstrapMigration(ctx, db, log)
-}
-
-// ensureBootstrapVersionRecorded checks whether version "000" is already
-// recorded in an existing schema_migrations table and inserts it if not.
-func ensureBootstrapVersionRecorded(ctx context.Context, db *sql.DB, log *slog.Logger) error {
-	var recorded int
-
-	err := db.QueryRowContext(ctx,
-		"SELECT COUNT(*) FROM schema_migrations WHERE version = ?",
-		bootstrapVersion,
-	).Scan(&recorded)
-	if err != nil {
-		return fmt.Errorf("failed to check bootstrap migration status: %w", err)
-	}
-
-	if recorded > 0 {
 		return nil
 	}
 
-	_, err = db.ExecContext(ctx,
-		"INSERT INTO schema_migrations (version) VALUES (?)",
-		bootstrapVersion,
-	)
-	if err != nil {
-		return fmt.Errorf("failed to record bootstrap migration: %w", err)
-	}
-
-	if log != nil {
-		log.Info("recorded bootstrap migration for existing table", "version", bootstrapVersion)
-	}
-
-	return nil
-}
-
-// applyBootstrapMigration reads and executes 000.sql to create the
-// schema_migrations table on a fresh database.
-func applyBootstrapMigration(ctx context.Context, db *sql.DB, log *slog.Logger) error {
 	content, err := schemaFS.ReadFile("schema/000.sql")
 	if err != nil {
 		return fmt.Errorf("failed to read bootstrap migration 000.sql: %w", err)
@@ -225,10 +185,6 @@ func applyBootstrapMigration(ctx context.Context, db *sql.DB, log *slog.Logger)
 		return fmt.Errorf("failed to record bootstrap migration: %w", err)
 	}
 
-	if log != nil {
-		log.Info("bootstrap migration applied successfully", "version", bootstrapVersion)
-	}
-
 	return nil
 }
 

internal/database/database_test.go

@@ -222,58 +222,3 @@ func TestBootstrapMigrationsTable_FreshDatabase(t *testing.T) {
 		t.Errorf("expected version 000 to be recorded, got count %d", recorded)
 	}
 }
-
-func TestBootstrapMigrationsTable_ExistingTableBackwardsCompat(t *testing.T) {
-	db := openTestDB(t)
-	ctx := context.Background()
-
-	// Simulate an older database that created the table via inline SQL
-	// (without recording version "000").
-	_, err := db.Exec(`
-		CREATE TABLE schema_migrations (
-			version TEXT PRIMARY KEY,
-			applied_at DATETIME DEFAULT CURRENT_TIMESTAMP
-		)
-	`)
-	if err != nil {
-		t.Fatalf("failed to create legacy table: %v", err)
-	}
-
-	// Insert a fake migration to prove the table already existed.
-	_, err = db.Exec("INSERT INTO schema_migrations (version) VALUES ('001')")
-	if err != nil {
-		t.Fatalf("failed to insert legacy version: %v", err)
-	}
-
-	if err := bootstrapMigrationsTable(ctx, db, nil); err != nil {
-		t.Fatalf("bootstrapMigrationsTable failed: %v", err)
-	}
-
-	// Version "000" must now be recorded.
-	var recorded int
-
-	err = db.QueryRow(
-		"SELECT COUNT(*) FROM schema_migrations WHERE version = '000'",
-	).Scan(&recorded)
-	if err != nil {
-		t.Fatalf("failed to check version: %v", err)
-	}
-
-	if recorded != 1 {
-		t.Errorf("expected version 000 to be recorded for legacy DB, got count %d", recorded)
-	}
-
-	// The existing "001" row must still be there.
-	var legacyCount int
-
-	err = db.QueryRow(
-		"SELECT COUNT(*) FROM schema_migrations WHERE version = '001'",
-	).Scan(&legacyCount)
-	if err != nil {
-		t.Fatalf("failed to check legacy version: %v", err)
-	}
-
-	if legacyCount != 1 {
-		t.Errorf("legacy version 001 row missing after bootstrap")
-	}
-}

internal/database/schema/000.sql

@@ -1,7 +1,5 @@
 -- Migration 000: Schema migrations tracking table
--- This must be the first migration applied. The bootstrap logic in
+-- Applied as a bootstrap step before the normal migration loop.
--- database.go applies it directly (bypassing the normal migration
--- loop) when the schema_migrations table does not yet exist.
 
 CREATE TABLE IF NOT EXISTS schema_migrations (
     version TEXT PRIMARY KEY,