Refacto load all functions

Unbounded LoadAll* loaders materialised an entire result set in one
query with no ceiling. A table that is small in development can grow
without bound in production, so these loaders were a latent memory
and query-time hazard.

Remove the LoadAll* methods from pkg/coredata and walk the cursor-
paginated LoadBy* siblings instead through a shared page.LoadAll
helper. The helper advances a MaxCursorSize forward cursor until the
result set is exhausted and concatenates the pages. It caps a single
call at MaxLoadAllPages (20) batches of 500 rows and errors past that
rather than materialising an unbounded set, so a runaway caller fails
loudly instead of exhausting memory.

Callers that genuinely need every row now express that explicitly,
and the coredata load-naming rule and docs are updated to discourage
new unbounded loaders.

Signed-off-by: Sacha Al Himdani <sacha@probo.com>

pkg/coredata/risk.go

@@ -464,57 +464,6 @@ WHERE %s
 	return nil
 }
 
-func (r *Risks) LoadAllByOrganizationID(
-	ctx context.Context,
-	conn pg.Querier,
-	scope Scoper,
-	organizationID gid.GID,
-) error {
-	q := `
-SELECT
-	r.id,
-	r.organization_id,
-	r.name,
-	r.description,
-	r.category,
-	r.owner_profile_id,
-	NULL as owner_full_name,
-	r.treatment,
-	r.note,
-	r.inherent_likelihood,
-	r.inherent_impact,
-	r.inherent_risk_score,
-	r.residual_likelihood,
-	r.residual_impact,
-	r.residual_risk_score,
-	r.created_at,
-	r.updated_at
-FROM
-	risks r
-WHERE %s
-	AND r.organization_id = @organization_id
-ORDER BY r.name ASC, r.id ASC
-`
-	q = fmt.Sprintf(q, scope.SQLFragment())
-
-	args := pgx.StrictNamedArgs{"organization_id": organizationID}
-	maps.Copy(args, scope.SQLArguments())
-
-	rows, err := conn.Query(ctx, q, args)
-	if err != nil {
-		return fmt.Errorf("cannot query risks: %w", err)
-	}
-
-	risks, err := pgx.CollectRows(rows, pgx.RowToAddrOfStructByName[Risk])
-	if err != nil {
-		return fmt.Errorf("cannot collect risks: %w", err)
-	}
-
-	*r = risks
-
-	return nil
-}
-
 func (r *Risk) LoadByID(
 	ctx context.Context,
 	conn pg.Querier,